A curated list of 1715 Java interview questions, sorted by their frequency of being asked.
Methodology: 600 public interviews on YouTube were analyzed, and thousands of unique questions were gathered from them. The analysis utilized voice transcription and text categorization techniques. The frequency of each question was then counted, and the probability of each question being asked was determined.
For international readers, I've translated the questions to various languages:
- Mandarin Chinese
- Spanish
- English (This document)
- Hindi
- Bengali
- Arabic
- Portuguese
- Russian
- Japanese
- Punjabi
Each translated file follows the same structure as the main list, but in the respective language.
| Question | Category |
|---|---|
| Tell me about yourself | General |
| What is OOP | OOP |
| What is the difference between Checked and UNCHECked exceptions | Java Core |
| What methods in the Object class do you know | Java Core |
| Tell me about the hierarchy of exceptions | Java Core |
| What is Solid | General |
| Tell me about the hierarchy of collections in Java | Java Collections |
| What is the difference between the interface and the abstract class | Java Core |
| What is the difference between Linkedlist and Arraylist | Java Collections |
| Tell me about Hashcode and Equals Contract | Java Core |
| What is the difference between a primitive and a reference type of data | Java Core |
| How Hashmap is organized | Java Collections |
| What is you experience is in programming | General |
| What do you know about Object class | Java Core |
| What are the principles of OOP | OOP |
| What is ACID | Databases |
| What is Stream in Java? | Java 8 |
| What Spring Scopes do you know | Spring |
| What is a functional interface | Java 8 |
| Question | Category |
|---|---|
| Tell me about Deadlock | Multithreading |
| What is executorservice | Multithreading |
| What are Hashcode and Equals overwritten rules | Java Core |
| What is the normalization of databases | Databases |
| What is the difference between SQL and NOSQL | Databases |
| What is Lambda | Java 8 |
| What are indexes | Databases |
| What is Bean | Spring |
| What is the idea of multi -seating | Multithreading |
| How Hashmap is related to SET | Java Collections |
| Tell me about Race Condition | Multithreading |
| What is the difference between final vs Finally vs Finalize | Java Core |
| What primitive data types are in Java | Java Core |
| What areas of memory in JVM do you know | Java Core |
| Familiar with SQL | SQL |
| Why do you need a class Object | Java Core |
| What design patterns do you know | Patterns |
| How Singleton differs from Prototype | Patterns |
| What is polymorphism | OOP |
| What is a process and a stream, how they differ | Multithreading |
| Are you familiar with SQL | SQL |
| What is the life cycle of Spring Beans | Spring |
| Tell me about Hashmap | Java Collections |
| Question | Category |
|---|---|
| What is Hibernate | Hibernate |
| What is the difference between JDK and Jre | Java Core |
| What is Hashcode | Java Core |
| What is a string pool | Java Core |
| What is an iterator and why it is needed | Java Core |
| What is the difference between the MAP operation and Flatmap | Java Core |
| What types of data are in Java | Java Core |
| What is ORM | Frameworks |
| What is encapsulation | Java Core |
| What is the main idea of Equals and Hashcode | Java Core |
| Why is singleon called antipattern | Patterns |
| What is the difference between Left Join from Inner Join | Databases |
| What are access modifiers and what are they | Java Core |
| What do you know about String | Java Core |
| What are how many normal forms exist in SQL | Databases |
| What is an exception | Java Core |
| What is optimistic and pessimistic locks | Multithreading |
| What is a monitor | Multithreading |
| Why do you love or hate Java | General |
| What types of Join do you know | SQL |
| What is the difference between Having and Where | SQL |
| What is the difference between hashmap and hashtable | Java Collections |
| What is a keyword Final | Java Core |
| What is Spring context | Spring |
| What is the difference between Treeset and Hashset | Java Collections |
| What scopes do beans have | Spring |
| Why MAP stands apart in the hierarchy of collections | Java Collections |
| What is the difference between Dependency Injection and Inverhuron of Control | Spring |
| Why do you need Spring Framework | Spring |
| How is Rebase different from Merge? | Git |
| What is Finalize | Java Core |
| Is it possible to override static methods | Java Core |
| What makes the key word transient | Java Core |
| What is the difference between Supplier and Consumer | Java Core |
| What is the idea of polymorphism | Java Core |
| What do you know about the Clone method | Java Core |
| What is the idea of Stream API | Java Core |
| How can I implement multiple inheritance in Java | Java Core |
| What does Garbage Collector work with | Java Core |
| What is a line in Java | Java Core |
| How the Try With Resources operator works | Java Core |
| Can a primitive data type to get into HIP | Java Core |
| What methods are located in the interface | Java Core |
| What is the relationship of the Equals and Hashcode contract | Java Core |
| What are the principles of Solid | General |
| Stringbuilder and Stringbuffer, what are the differences | Java Core |
| What do you know about the Java 8+ functional interface | Java Core |
| Why is it impossible to compare objects through "==" | Java Core |
| What types of data exist in Java | Java Core |
| The main idea of encapsulation | Java Core |
| What is the meaning of incapsulation | Java Core |
| Why do you need String Pool | Java Core |
| What is Parallel Stream | Java Core |
| What is String Pool | Java Core |
| What design templates do you know | Patterns |
| What are the advantages and disadvantages of the OOP compared to procedural and functional programming | OOP |
| What is JVM, JDK, Jre | Java Core |
| What is MOCK in testing | Tools |
| What is Volatile | Multithreading |
| What is Completablefuture | Multithreading |
| How to create a stream | Multithreading |
| What is partitioning | Databases |
| Describe the principle of Happens Before | Multithreading |
| What design patters do you know | Patterns |
| What is synchronization and why it is needed | Multithreading |
| What are the advantages and disadvantages of the OOP compared to procedural and functional programming | OOP |
| What are the states of the object in Hibernate | Hibernate |
| What is Future | Multithreading |
| What is the difference of Char and Varchar in SQL | Databases |
| Tell me about the Collection Framework hierarchy | Java Collections |
| What is JDBC | Tools |
| Array of static data structure or dynamic | Java Collections |
| What is the difference between Arraylist and vector | Java Collections |
| What is Vector | Java Collections |
| What are the Java collections | Java Collections |
| Is Hashmap a safe stream collection | Java Collections |
| What is Failfast | Java Collections |
| What is Deque | Java Collections |
| HashTable and Concurrenthashmap - differences and what is more effective | Java Collections |
| What is Bean, what role does Spring play | Spring |
| What is the "Inheritance" | OOP |
| What are the options for Dependensky Injection | Spring |
| What is the difference between Leftjoin, Rightjoin and Innerjoin | Databases |
| What is Dependency Injection in Spring | Spring |
| What is a line in Java | Java Core |
| What is the idea of polymorphism | Java Core |
| Is it possible to override static methods | Java Core |
| How can I implement multiple inheritance in Java | Java Core |
| What methods are located in the interface | Java Core |
| What is the idea of Stream API | Java Core |
| What is Finalize | Java Core |
| What is the relationship of the Equals and Hashcode contract | Java Core |
| The main idea of encapsulation | Java Core |
| Stringbuilder and Stringbuffer, what are the differences | Java Core |
| What is JVM, JDK, Jre | Java Core |
| What is CI/CD | General |
| What types of data exist in Java | Java Core |
| Can a primitive data type to get into HIP | Java Core |
| What is the keyword transient | Java Core |
| What types of testing do you know | General |
| What is String Pool | Java Core |
| What is Spring Boot and what is its main advantage | Spring |
| What kind of Bean Scope do you know | Spring |
| What is the meaning of incapsulation | Java Core |
| What is Springscope | Spring |
| Why is it impossible to compare objects through "==" | Java Core |
| How can you describe an abstraction | OOP |
| Why do you need String Pool | Java Core |
| What is Spring Boot for | Spring |
| How the Try With Resources operator works | Java Core |
| What do you know about the Java 8+ functional interface | Java Core |
| What is Parallel Stream | Java Core |
| What are the foreign keys in the database | Databases |
| What does Garbage Collector work with | Java Core |
| Question | Category |
|---|---|
| What commands do you use in Git | Git |
| How do you use SOLID principle of openness-covering when designing | General |
| What is the difference between the Builder and Facade design template | Patterns |
| What is the lack of desing patterns | Patterns |
| What are the approaches to organize the development process | General |
| What is the relationship between JS and Java :) | General |
| What are design patterns | Patterns |
| Tell me about your design-patters experience | Patterns |
| What goals do you set for yourself | General |
| What design patterns do you use | Patterns |
| What synchronization channels used to organize the interaction of several services | Patterns |
| What interesting tasks had to be solved | General |
| What is TDD | General |
| What is the easiest way to implement caching | General |
| What types of relationships exist in the structural diagram of classes | UML |
| What are the types of diagrams | UML |
| As if organized the interaction of several services | Patterns |
| What is UML what is a “diagram”, “notation” and “metamodel” in UML | UML |
| What is XSLT | XML |
| What are the pluses of microservices compare to monolith | Patterns |
| What languages do you know that use byte code | General |
| What is JAXP | XML |
| What are the ways of recording XML | XML |
| Tell me something about microservice interaction | Patterns |
| When to use DOM, and when SAX, Stax analyzers | XML |
| What are the XML reading methods, describe the strengths and weaknesses of each method | XML |
| Which structure acts as quickly as possible to the Comand pattern than it can be replaced | Patterns |
| What is the caching for | General |
| What types exist in XSD | XML |
| What is the "namespace" in XML | XML |
| Why do you need a pattern Command | Patterns |
| How the Well-Formed XML differs from Valid XML | XML |
| What is DTD | XML |
| Whether you use the Comand pattern in work | Patterns |
| Caching only works with databases or not | General |
| What is a "deployment descriptor" | Servlets |
| What is XSD scheme | XML |
| How container controls the life cycle of the Serlet, when and what methods are called | Servlets |
| Why do you need application servers if there are server containers | Servlets |
| What is XML | XML |
| What is the advantage of the Builder pattern over the constructor | Patterns |
| What actions need to be done when creating Servlets | Servlets |
| In which case is it required to override the Service () method () | Servlets |
| What is the "Container of the Servmar" | Servlets |
| Which structure acts as quickly as possible to the Comand pattern than it can be replaced | Patterns |
| What is the caching for | General |
| How to implement the launch of the servicema simultaneously with the launch of the application | Servlets |
| When to use the Servetov filters, and when are the listeners | Servlets |
| What types exist in XSD | XML |
| Why are various listener used in the Servlets | Servlets |
| What do you know about the Serpent filters | Servlets |
| What is Servletconfig | Servlets |
| What is ServletContext | Servlets |
| What are the differences of ServletContext and ServletConfig | Servlets |
| Why do I need the Servletresponse interface | Servlets |
| What is the Servletrequest interface for | Servlets |
| What is Request Dispatcher | Servlets |
| How to call another Servable from one sergete | Servlets |
| What is the difference between Sendredirect () from Forward () | Servlets |
| Why are the attributes of the Servita and how working with them is | Servlets |
| What are the differences between GenericServlet and HttpServlet | Servlets |
| Why is httpservlet class declared as an abstract | Servlets |
| What are the main methods in the HTTPSERVlet class | Servlets |
| Which HTTP method is not unchanged | Servlets |
| What are the methods of sending data from the client to the server | Servlets |
| What is the difference between Get and Post methods | Servlets |
| What is the "namespace" in XML | XML |
| Is it possible to use Printwriter and ServletoutPutStream simultaneously | Servlets |
| Why do you need a pattern Command | Patterns |
| What does the URL Encoding mean, how to do it in Java | Servlets |
| What are the most common tasks performed in the server container | Servlets |
| What are cookies | Servlets |
| Why it is necessary to override the only init () method without arguments | Servlets |
| What is the URL REWRITING | Servlets |
| How the Well-Formed XML differs from Valid XML | XML |
| What is a "session" | Servlets |
| Does it make sense to determine the constructor for the servlet, which is better to initialize data | Servlets |
| What is an effective way to make sure that all servus are available only for the user with the right session | Servlets |
| In which case is it required to override the Service () method () | Servlets |
| How to organize a database connection, provide journalization in Services | Servlets |
| What is DTD | XML |
| What authentication methods are available to the sergete | Servlets |
| Whether you use the Comand pattern in work | Patterns |
| Why do you need a jSP | Servlets |
| Caching only works with databases or not | General |
| Tell me about the stages (phases) of the JSP life cycle. | Servlets |
| What actions need to be done when creating Servlets | Servlets |
| What methods of the JSP life cycle can be redefined | Servlets |
| What is a "deployment descriptor" | Servlets |
| What is the difference between the dynamic and static contents of JSP | Servlets |
| What is XSD scheme | XML |
| As a serviceman container controls the life cycle of the Serlet, when and what methods are called | Servlets |
| Why do you need application servers if there are server containers | Servlets |
| What areas of visibility of variables exist in jSP | Servlets |
| What is XML | XML |
| What implicit objects are not available in a regular JSP page | Servlets |
| What is the advantage of the Builder pattern over the constructor | Patterns |
| How to configure initialization parameters for JSP | Servlets |
| What is the "Container of the Servmar" | Servlets |
| What is the structure of the web project | Servlets |
| Tell me about transitivity | Frameworks |
| What are the advantages of the sergete technology over CGI Common Gateway Interface | Servlets |
| What do you use Mavel or Gradeel when assembling the project | Frameworks |
| What patterns used besides Singleton | Patterns |
| Did Java do somewhere else | General |
| What is Lombok | General |
| Tell me about your most interesting project | General |
| Have you heard anything about Spring MVC | Spring |
| What does Dependency Injection give us | Spring |
| What is the difference between IOC and Dependency Injection | Spring |
| What can be returned data types in Spring MVC | Spring |
| What is Swagger for | Tools |
| Where you can use singleton | Patterns |
| Can it turn out so that there is no controller in the context | Spring |
| What we need to make Spring MVC earn | Spring |
| What is Message Broker | Tools |
| What is Scope | Spring |
| What is a context | Spring |
| How Docker differs from a virtual machine | Tools |
| What tasks did the patterns solved | Patterns |
| In what university did you study | General |
| How dependency Injection can be applied to Spring Bean | Spring |
| What is http type | Spring |
| What is the difference between Kubernetes Docker | Tools |
| How Dispatcher Servlet "understands" which method to call | Spring |
| As a client can understand what came to the browser from the server | Spring |
| What is the Dependence Management section for | Tools |
| Why REST is needed | Spring |
| What is the difference between Request Mapping and Put Mapping | Spring |
| What Scope can be used for any application | Spring |
| Request We can use in all Spring applications | Spring |
| Tell me about the structure of the POM file in the Maven packages manager. | Tools |
| Life cycle Maven | Tools |
| How much do you do java | General |
| How do you use Dependency Injection | Spring |
| What IOC implementations do you know | Spring |
| What is Spring IOC container in Spring. | Spring |
| What areas of visibility in Spring you know | Spring |
| What types of implementation of addiction do you know | Spring |
| Tell me what is Inversion of Control | Spring |
| What is Spring Framework | Spring |
| Where it is more convenient to use Java configuration, and where is XML configuration | Spring |
| What is a “performance”, View, and why it is used | SQL |
| What is a “temporary table”, for which it is used | SQL |
| What is Spring IOC container in Spring. | Spring |
| What areas of visibility in Spring you know | Spring |
| What types of implementation of addiction do you know | Spring |
| Tell me what is Inversion of Control | Spring |
| What is Spring Framework | Spring |
| Where it is more convenient to use Java configuration, and where is XML configuration | Spring |
| What is a “performance”, View, and why it is used | SQL |
| What is a “temporary table”, for which it is used | SQL |
| What configuration would be removed | Spring |
| Which of the configuration, XML, Java Annotation, you prefer more | Spring |
| What does NULL mean in SQL | SQL |
| What configuration will be more priority: XML, Java or Annotation | Spring |
| Now in Spring it is not necessary to indicate the AbowireD annotation, why is it so | Spring |
| What are the SQL operators | SQL |
| How to create a controller in Spring | Spring |
| How can you create Servlett in Spring'e | Spring |
| How the context works | Spring |
| Is it possible to create two singleton in Spring. | Spring |
| What is a cursor in a relational database | SQL |
| What are triggers in a relational database | SQL |
| Which prompted to dwell on another programming language | General |
| How you evaluate yourself | General |
| How many contexts can be | Spring |
| What does the SCAN component do | Spring |
| Tell me about the full syntax of Select in a relational database | SQL |
| What is the difference between Filters, Interceptors, and Listeners in Spring | Spring |
| What is the difference between the component and bina | Spring |
| Why is SQL HAVING | SQL |
| What is the difference between Spring Component, Repository and Service Abstracts | Spring |
| What is the life cycle of an object that creates Spring | Spring |
| What Merge does | SQL |
| What is the difference between authentication and authorization | Spring |
| What is JWT for | Spring |
| What is Join | SQL |
| Where did you study | General |
| As if organized the Delete method | Spring |
| How SOAP differs from REST | Spring |
| How to close the connection connection | JDBC |
| How to write a web application on Java | Spring |
| How to cause a stored procedure | JDBC |
| How is the database request and processing the results are carried out | JDBC |
| Why do you need a springs | Spring |
| What are stored procedures and what method of calling through JDBC | SQL |
| With which requests for the database are formed | JDBC |
| What transaction insulation levels are supported in JDBC | JDBC |
| What is the BEAN annotation for | Spring |
| How to register a jdbc driver | JDBC |
| What happens in JVM when starting a program written on Java | Java Core |
| What can tell about the jar file manifesto | Java Core |
| Tell me about the memory areas and Garbage Collector | Java Core |
| Describe the main stages of working with the database using JDBC | JDBC |
| How can you understand that an object is used in memory or not, provided that objects have a cyclic link to each other | Java Core |
| What areas of memory can you remember except stack and heaps | Java Core |
| What are the disadvantages of a pool of lines in terms of security | Java Core |
| What is the difference between RestController from Controller | Spring |
| Is the Poole of the Lines empty at the start of the JAR file or there are some values there | Java Core |
| Due to what LambDA explorations work, which occurs "under the hood" | Java Core |
| You use in the work of lambda expression | Java Core |
| What parts is JDBC from | JDBC |
| How many functionality can be placed in one lambda expression | Java Core |
| Where do Equals and Hashcode methods come from | Java Core |
| Why Hashcode can be equal | Java Core |
| What do you know about the memory models in Java | Java Core |
| When Stream begins its execution | Java Core |
| What is Default Equals and Hashcode modifier | Java Core |
| What is Heap, Stack | Java Core |
| What are the problems during the implementation of hashcode | Java Core |
| What is the eraser of the types for | Java Core |
| From how many classes the class can be inherited | Java Core |
| How to create your own annotation | Java Core |
| Which two classes are not inherited from Object | Java Core |
| What is the grinding of types | Java Core |
| How the parameters are transmitted | Java Core |
| Tell me the features of the Java language | Java Core |
| How Java helps to run the code on operating systems | Java Core |
| How data is stored in Java | Java Core |
| How to determine which object is garbage | Java Core |
| Can developers manage the assembly of garbage and memory parameters | Java Core |
| List the main types of data used in JDBC, how are they related to the types of Java | JDBC |
| What is a class in Java | Java Core |
| What is the class consist of | Java Core |
| How can you compare objects in Java in Java | Java Core |
| What is JDBC url | JDBC |
| What versions of Java worked with | Java Core |
| What are the advantages of using JDBC | JDBC |
| What is the noteworthy Java in the context of the platform | Java Core |
| What is Garbage Collector | Java Core |
| After what moment GC understands that you need to collect garbage | Java Core |
| What GC do you know | Java Core |
| How can we set the GC configuration parameters | Java Core |
| What plugins can be put when creating a virtual machine | Java Core |
| What is the difference between Equals and Hashcode | Java Core |
| Why is it important to override Equals and Hashcode | Java Core |
| In the context of the business, is it necessary to take into account in Equals all the fields of the essence | Java Core |
| Tell me briefly about the idea of processing errors in Java. | Java Core |
| What designs in the processing of errors do you know | Java Core |
| Когда может произойти ситуация, когда мы можем перезатереть исключение | Java Core |
| Where in the processing of exceptions a design with Finally can be used | Java Core |
| What is the value of the byte | Java Core |
| How to quickly make a rest service | Spring |
| What needs to be done in order to override hashcode | Java Core |
| How the line "under the hood" works | Java Core |
| How to bring a line into arrays of characters | Java Core |
| What is ensured by immutable | Java Core |
| What characteristics should the method have a functional ITERPHIS to function | Java Core |
| What needs to be done in order to accept and return values | Java Core |
| Can we without jdk lead java development | Java Core |
| Explain what is due to the fact that int is limited in the amount | Java Core |
| Where reference data types are stored | Java Core |
| Can I use Equals in the form in which it is | Java Core |
| What is the difference between the abstract class and the abstract method, and the abstract method and interface | Java Core |
| What is dynamic polymorphism | Java Core |
| What is the idea of overloading constructors | Java Core |
| Why is immutable so important | Java Core |
| How is the database request and processing the results are carried out | JDBC |
| What is the difference between JVM from JDK | Java Core |
| Do we always need to override Equals | Java Core |
| Why Java platform is independent | Java Core |
| What is the reason for the incomplete Java object | Java Core |
| What is Wrapper class | Java Core |
| Have you heard something about Boxing/Unboxing | Java Core |
| What is the difference between the method and the constructor | Java Core |
| Is it possible to override the method? And the constructor | Java Core |
| What are heterogeneous types | Java Core |
| How to store and process a password working with java | Java Core |
| Where it would be worth applying enum transfers | Java Core |
| What are the most important methods and are used most often | Java Core |
| Whether it was necessary to overlook Equals on their own | Java Core |
| How lines are stored in memory | Java Core |
| What is the problem of concatenation | Java Core |
| Someday I tried the Append method | Java Core |
| What is the difference between Error and Exception | Java Core |
| Give an example of error at JVM level | Java Core |
| What is the problem of verified exceptions | Java Core |
| Would you delete exceptions from Java Checked | Java Core |
| Give examples where CHECKED would use | Java Core |
| Can I make an improved For Each cycle for my object | Java Core |
| What is the most useful method in Object | Java Core |
| What is the advantage of Package Private | Java Core |
| How Package Private can be associated with encapsulation | Java Core |
| Which design template is used for Stringbuilder and Stringbuffer | Java Core |
| Can an array be attached to stream | Java Core |
| What is the coolest method in straps | Java Core |
| What do you know about TargetMethod | Java Core |
| What I heard about Optional class | Java Core |
| Is it necessary to create a class in Java | Java Core |
| Why do you need a springs | Spring |
| What are stored procedures and what method of calling through JDBC | SQL |
| With which requests for the database are formed | JDBC |
| What transaction insulation levels are supported in JDBC | JDBC |
| What is the BEAN annotation for | Spring |
| How to register a jdbc driver | JDBC |
| Describe the main stages of working with the database using JDBC | JDBC |
| What is the difference between RestController from Controller | Spring |
| What parts is JDBC from | JDBC |
| List the main types of data used in JDBC, how are they related to the types of Java | JDBC |
| What is JDBC url | JDBC |
| What is LIST, SET implicitly | Java Collections |
| What are the advantages of using JDBC | JDBC |
| What 3 principles are basic in the OOP | Java Core |
| Where you can apply the polyformity of polymorphism | Java Core |
| Where you can see comprehensive data on primitive types of data in Java | Java Core |
| How to quickly make a rest service | Spring |
| What are reference data types | Java Core |
| That in Java is the most important object for all | Java Core |
| Object classes are inherited clearly or implicitly | Java Core |
| The difference in annotations Service, Repository, Controller | Spring |
| What determines the equivalence of one object to another | Java Core |
| You can characterize what such a state | Java Core |
| Do you know the difference between Stringbuilder and concatenation | Java Core |
| What are restrictions in SQL | SQL |
| Than open fields fraught | Java Core |
| What I heard about the static of typification in Java | Java Core |
| What is the string and features in Java | Java Core |
| Where he was engaged in programming | General |
| What is the Equals method | Java Core |
| What implies immutable | Java Core |
| What is the strict typification in Java expresses itself | Java Core |
| Tell me about JDBCTEMPLATE | JDBC |
| What two main sections of memory for storing data are there | Java Core |
| Have you heard about Stackoverflow | Java Core |
| As it were substantiated that the interface exists | Java Core |
| How can you install a connection with a database | JDBC |
| Which underlies each exception | Java Core |
| How to process exceptions | Java Core |
| As if threw up the exceptions | Java Core |
| What types of proxies do you know | Spring |
| How long lines are stored in String | Java Core |
| Stringpool - part of Heap or something separate | Java Core |
| What is Autocloseable and the Try-With-Rosources design | Java Core |
| What is the difference between Statement and PrepareDstate | JDBC |
| What is the idea in Geneeric generalizations | Java Core |
| Have you heard about new chips of the latest versions of Java | Java Core |
| How to override the Equals method | Java Core |
| What is Resultset | JDBC |
| What is the difference between String and Stringbuilder | Java Core |
| How to create singleton-tin when starting a Spring application | Spring |
| What are the terms of the Equals and Hashcode contract | Java Core |
| What is the difference between Execute, Executequary, Executeupdate | JDBC |
| How Resultset works inside | JDBC |
| Features of the String class | Java Core |
| Do you know what a static class is | Java Core |
| Where he was engaged in programming | General |
| What is a deep copying | Java Core |
| What is the main idea of reflection | Java Core |
| What is Jre | Java Core |
| Tell me about JDBCTEMPLATE | JDBC |
| What terminal operations do we have | Java Core |
| How are the problems of memory deficiency and exclusion of Out of Memory Exception are resolved | Java Core |
| What is Java constructor | Java Core |
| How can you install a connection with a database | JDBC |
| What types of proxies do you know | Spring |
| What is the difference between Statement and PrepareDstate | JDBC |
| What is the main advantage of resources | No |
| What is Resultset | JDBC |
| How to create singleton-tin when starting a Spring application | Spring |
| What is the difference between Execute, Executequary, Executeupdate | JDBC |
| How Resultset works inside | JDBC |
| What projects did you do using Spring | Spring |
| Why do we need Resultset | JDBC |
| What commands do you know from SQL | No |
| Tell me about Execute Executequery and Executeupdate | JDBC |
| Tell the structure of Framework Collection | Spring |
| What is unit testing | Testing |
| What is execution engine | JVM |
| What is Frames | JVM |
| What are the methods of configuration Spring applications | Spring |
| Areas of the time execution time | JVM |
| What is classloader | JVM |
| Where the Bean annotation is used | Spring |
| What is the difference between unit tests and integration | Testing |
| What is JVM for | JVM |
| Describe the general practical principles of working with JSP | Servlets |
| What is the difference between RestController and Controller | Spring |
| What is the difference between JSPWRITER and the Serpent Printwriter | Servlets |
| Why is the Assert Operator used | Java Core |
| Is an object of the session on the JSP page always created, is it possible to turn off its creation | Servlets |
| What is the difference in repository annotations, Component, Controller, Service | Spring |
| What tests do you write and how | Testing |
| How you estimate your level | General |
| Tell me why are you in java | General |
| How to get access to the field of the external class from the invested class | Java Core |
| What is the "local class", what are its features | Java Core |
| What will happen to the garbage collector if the execution of the finalize () method requires significantly a lot of time, or during the execution the exception will be released | Java Core |
| What are "anonymous classes" where they are used | Java Core |
| Is it possible to use JavaScript on a JSP page | Servlets |
| What are the features of the use of nested classes: static and internal, which is the difference between them | Java Core |
| Tell me about the invested classes in what cases they are applied | Java Core |
| How JSP is configured in the deployment descriptor | Servlets |
| Where could Prototype be used | Spring |
| What types of classes are in Java | Java Core |
| Where the initialization of static/non -tatual fields is allowed | Java Core |
| How errors are processed using JSTL | Servlets |
| What is the difference between a member of a class copy and a static class member | Java Core |
| Is it possible to declare the method abstract and static at the same time | Java Core |
| What is Capacy of list | Java Collections |
| By what principle does the number of bakers increase | Java Collections |
| What data structure lies in Arraylist | No |
| How can I process JSP page errors | Servlets |
| What does the Componentscan annotation do | No |
| That during assembly can be provided by Maven | No |
| Against the background of which Spring Date is built | No |
| What is caching | No |
| What is the difficulty of searching for an element in Linkedlist | No |
| What are the types of stitches in JDBC | No |
| What are the requirements for transaction | No |
| Which default Scope is used in Spring | Spring |
| How the vertical and horizontal partners are different | No |
| Are there any contraindications to the use of indexes | No |
| Is it possible to make private variables in the interface | No |
| Will Stream API Randomacess provide | No |
| Is there an iterator in Stream | No |
| What do we use when we write for each | No |
| What is the difference in replication and hearts | No |
| What is the difference between the approaches of Trunk BASD and Feature Branch | Git |
| What is the main problem of the cache | No |
| How to make a stream from the class | No |
| Based on which data structure, Linked List is implemented | No |
| How to access overstroting parental methods | Java Core |
| How to organize a search for Arraylist | Java Collections |
| What is CAS | No |
| What is the difference between PUT and Compute in Map | No |
| Is it possible to narrow the access level/type of the returned value when the method is redistributed | Java Core |
| What does verified and unverified values mean | No |
| How to work on Spring | No |
| What is the difference between JPA and Hibernate | No |
| What is Fetch Type | No |
| What are the mechanisms for complex requests with many parameters | No |
| What is the difference between JDBC species | No |
| What is the difference between atomicity and consistency | No |
| Why you do not need to configure standard JSP tags in Web.xml | Servlets |
| Explain how indexes work | No |
| There is experience with cloud services | No |
| What are we working inside Stream | No |
| What essence in collections helps to access objects in the collection | No |
| What classic functional interfaces you know | No |
| Can non -non -static methods can overload static | Java Core |
| What task the chart solves | No |
| What an exception is released when an error occurs in the class initialization unit | Java Core |
| How to make lines transfer to HTML by JSP | Servlets |
| Tell me about Execute Executequery and Executeupdate | JDBC |
| Is it possible to lose an object in hashmap | Java Collections |
| Tell the structure of Framework Collection | Spring |
| What are Java collections | Java Collections |
| What is unit testing | Testing |
| What are the implementations in the collection of the sheet interface | Java Collections |
| What data structure lies in Arraylist | No |
| By what principle does the number of bakers increase | Java Collections |
| What is execution engine | JVM |
| How the process works if we want to put something in MAP or get | Java Collections |
| What is Capacy | Java Collections |
| How much BUCKET can be in hashmap | Java Collections |
| What is Frames | JVM |
| How to look and delete elements in list | Java Collections |
| What are the methods of configuration Spring applications | Spring |
| How can we bypass the elements of the collection | Java Collections |
| Areas of the time execution time | JVM |
| What is the difference between Hashset and LinkedHashset | Java Collections |
| What is classloader | JVM |
| Whether I heard something about SET | Java Collections |
| Where the Bean annotation is used | Spring |
| What needs to be done to use the Foreach cycle | Java Collections |
| What is the difference between unit tests and integration | Testing |
| What is JVM for | JVM |
| Describe the general practical principles of working with JSP | Servlets |
| Can it be that in Hashmap there will be two identical keys | Java Collections |
| What is the difference between RestController and Controller | Spring |
| What restriction is to add to Treeset | Java Collections |
| What are "anonymous classes" where they are used | Java Core |
| Can Treeset store null | Java Collections |
| What is the difference between JSPWRITER and the Printwriter | Servlets |
| What are the main implementations about the collection | Java Collections |
| What will happen to the garbage collector if the execution of the finalize () method requires significantly a lot of time, or during the execution the exception will be released | Java Core |
| What is the level of complexity in Hashset when looking for an element | Java Collections |
| Why is the Assert Operator used | Java Core |
| How structurally a two -link list looks compared to the single | Java Collections |
| Is an object of the session on the JSP page always created, is it possible to turn off its creation | Servlets |
| What will be the speed of access to the element in LinkedList, which is located in the middle | Java Collections |
| What is the difference in repository annotations, Component, Controller, Service | Spring |
| What tests do you write and how | Testing |
| How you estimate your level | General |
| What will be the search speed in linkedlist | Java Collections |
| Tell me why are you in java | General |
| What is the search speed in Arraylist | Java Collections |
| How to get access to the field of the external class from the invested class | Java Core |
| What is the speed of access to the element in Linkedlist by index | Java Collections |
| What is the "local class", what are its features | Java Core |
| Is it possible to use JavaScript on a JSP page | Servlets |
| What are the features of the use of nested classes: static and internal, which is the difference between them | Java Core |
| What to have inside Hashset and Treeset | Java Collections |
| Tell me about the invested classes in what cases they are applied | Java Core |
| LinkedList single -legged or two -link | Java Collections |
| How JSP is configured in the deployment descriptor | Servlets |
| Tell me about LinkedHashmap | Java Collections |
| Where could Prototype be used | Spring |
| What types of classes are in Java | Java Core |
| Where the initialization of static/non-static fields is allowed | Java Core |
| How errors are processed using JSTL | Servlets |
| What is the difference between a member of a class copy and a static class member | Java Core |
| Is it possible to declare the method abstract and static at the same time | Java Core |
| How can I process JSP page errors | Servlets |
| Have you heard something about the Foreach cycle | Java 8 |
| Which default Scope is used in Spring | Spring |
| What mechanism is used in the implementation of parallel streams | Java 8 |
| What is the difference between the approaches of Trunk BASD and Feature Branch | Git |
| What is a link to the method and how it is realized | Java 8 |
| How to access overstroting parental methods | Java Core |
| Is it possible to override the access level/type of the returned value when the method is private | Java Core |
| Why you do not need to configure standard JSP tags in Web.xml | Servlets |
| What is Dirty Checking in Hibernate | Hibernate |
| Can non -non -static methods can overload static | Java Core |
| What an exception is released when an error occurs in the class initialization unit | Java Core |
| How to make lines transfer to HTML by JSP | Servlets |
| What is serialization | Serialization |
| Where and when used Prototype | Spring |
| What is http protocol | WEB |
| What will happen if an exception throws in the constuctor | Java Core |
| Why Java uses static initialization blocks | Java Core |
| Give an example of using your own tags | Servlets |
| What designs Java are applicable to the Static modifier | Java Core |
| What is the procedure for calling constructors and blocks of initialization taking into account the hierarchy of classes | Java Core |
| What do you know about writing user jSP tags | Servlets |
| What will happen if in ApplicationContext you try to get the same bin | Spring |
| How to drain two different branches | Git |
| What position I would like to claim | General |
| Can an object gain access to a Private-cross-class class, if, yes, then how | Java Core |
| That has a higher level of abstraction - class, abstract class or interface | Java Core |
| How can JSP functionality expand | Servlets |
| Why is it impossible to declare the interface method with the Final modifier | Java Core |
| Why in some interfaces do not determine the methods at all | Java Core |
| What groups of tags do the JSTL library consist of | Servlets |
| In what cases should the abstract class should be used, and in which interface | Java Core |
| What modifiers by default have fields and interfaces methods | Java Core |
| Why do you need a program that works in several threads, and not in one | Multithreading |
| What is JSTL, JSP Standard Tag Library | Servlets |
| What are the options for synchronization in Java | Multithreading |
| What is Atomic Types, what are they needed | Multithreading |
| What is the security of the threads | Multithreading |
| What is the meaning of the keyword of Volatile and related problems | Multithreading |
| Where and for what the ABSTRACT modifier is used | Java Core |
| How to adjust the thread priority and how | Multithreading |
| What is the object of the interface Runnable | Multithreading |
| What groups of tags do the JSTL library consist of | Servlets |
| What is the semaphore | Multithreading |
| What does Wait method do | Multithreading |
| What is a stream of "demon" | Multithreading |
| What is the meaning of Readwritelock | Multithreading |
| In what cases should the abstract class should be used, and in which interface | Java Core |
| What modifiers by default have fields and interfaces methods | Java Core |
| What is JSTL, JSP Standard Tag Library | Servlets |
| Where and for what the ABSTRACT modifier is used | Java Core |
| What beaten operations do you know | Java Core |
| Dike the implicit, internal objects of JSP EL and their differences from JSP objects | Servlets |
| What are the general branching strategies you know | Git |
| What is a thornsary choice operator | Java Core |
| What logical operations and operators know | Java Core |
| What types of EL operators know | Servlets |
| What do you know about the function of Main () | Java Core |
| What values are initialized by default variables | Java Core |
| What do you know about the language of JSP, JSP Expression Language - EL | Servlets |
| What are the exceptions | Java Core |
| What is and how the cloning of objects, arrays and two -dimensional arrays is used | Java Core |
| What is autoboxing | Java Core |
| What is an initialization block | Java Core |
| Is it possible to determine the class inside the JSP page | Servlets |
| What are the disadvantages in the index | Databases |
| What is primary and external keys and what restrictions exist | Databases |
| What is DANEAL DENORMALISE | Databases |
| What is the idea of Foreign Key | Databases |
| What is the difference between JPQL and HQL | Databases |
| What is a relational data model | Databases |
| What arises that anomalies arise when performing parallel transactions | Databases |
| What is database replication | Databases |
| How I kept data in projects | Databases |
| As it were to send a message to the client, given the possibility of canceling the transaction | Databases |
| How to avoid the fact that the data package can go twice | Databases |
| What databases did you use | Databases |
| What are the restrictions on the keys | Databases |
| Where I used the annotation Transactional | Databases |
| Why is the database better than a text file | Databases |
| What is indexing | Databases |
| What types of requests do you know | Databases |
| Have you heard something about DML and DDL | Databases |
| Name a brief list of three restrictions | Databases |
| What is the meaning of the second normal shape | Databases |
| Describe the shape of the code | Databases |
| That we most often use in aggregation in aggregation requests | Databases |
| What is performed before Were or Join | Databases |
| How can you add restrictions | Databases |
| With which we can specify constraint | Databases |
| What are Venna diagrams | Databases |
| How to add restrictions to the database | Databases |
| What is Join's idea | Databases |
| What I heard about the Exists operator | Databases |
| Tell the interruption and second form of normalization | Databases |
| What is a constructor for copying | No |
| What is the idea of Builder | No |
| What is unique applied to | No |
| Why is it not recommended to use science, script elements, in jSP | Servlets |
| Can there be a situation where Primary Key is repeated | No |
| What is the basis of Spring Framework | No |
| Is it possible to introduce dependence not only through the constructor | No |
| What is performed earlier: constructor, setter or implementation field | No |
| File specimen contains only a file path | No |
| What do the relationship "is" and "have" in the OOP | No |
| Where it is better to use inheritance and association | No |
| Why are you needed versions control systems? | Git |
| Why do you need Final for a static method | No |
| Why Throws is bad in the signature of the method | No |
| How to throw exceptions correctly | No |
| Tell me about how you understand the principles of Solid based on your experience | General |
| Tell me about File class and its device | No |
| How to avoid compulsory IOEXCEPTION processing | No |
| What is atomic and consistency | No |
| Why is Java Memory Model important when working with multi -thread | No |
| What is the difference between Synchronized and Lock | No |
| What is callable | No |
| Advantages of the implementation of Executorservice | No |
| Why Hashmap appeared | No |
| Why is it bad to make an array of bytes for hashmap | No |
| What is HashTable problem | No |
| What is automatic increment in different databases | No |
| What are the insulation levels in SQL | No |
| Tell me about the idea of Framwar Hibernate | No |
| What types of communication in Hibernate are there | No |
| What annotations are there to create bins | No |
| What is the value of the Bean annotation | No |
| What is BeandEfinition and why is it needed | No |
| How to contact another service from a Spring application | No |
| What is the value of Spring Boot | No |
| What starters do you know in Spring Boot | No |
| Is it necessary to catch Throws | No |
| What is encapsulation for | No |
| Stack, is it a long -term storage | No |
| How can you compare with each other data types | No |
| As primitive data types can be compared to each other | No |
| Whether I heard something about static methods | No |
| Why Equals need to be redistributed and why | No |
| What are the main implementations of leaf collections | No |
| What is your total experience in Java | General |
| What is the advantage of Hibernate over JBC | No |
| What is caching in Hibernate | No |
| There is experience in writing tests | No |
| Familiar with the principles of system scaling | No |
| What is a dock | No |
| What he worked with from the point of view of security | No |
| How many parts is JVTTOKEN | No |
| What is the feature of Spring Boot | No |
| What types of tests do you know | No |
| What contains the task that came from analysts | No |
| What is Main method | No |
| What gives the word static | No |
| Why Main is considered static | No |
| What are arrays in Java | No |
| What class is realized by the dynamic array in Java | No |
| Due to which NIO provides non -insoluble access to resources | No |
| What is the feature of CopyonWritearraylist | No |
| What is Stream in the Stream API context | No |
| What is EXECUTORSERVICE for execution | No |
| What is meant by the letter O in Solid | No |
| What are the differences between the strategy pattern and state pattern | No |
| What is an adapter | No |
| What is a group in the database | No |
| What are the main orm realization in Java | No |
| What levels of caching are there in hibernate | No |
| What is Docker | No |
| What is the difference between a docker and a virtual machine | No |
| How is JVM memory arranged | No |
| What are stacks | No |
| How the data between the glass and the hit pass | No |
| What is garbage assembly | No |
| What is multi -fluidity, parallelism and asynchronism | No |
| What are Future and Completablefuture classes for | No |
| What is under the letter L in the principles of Solid | No |
| What is Result Set in JDBC | No |
| Features of Result Set in JDBC and its configuration | No |
| What is SessionFactory in Hibernate | No |
| Tell me about the control levels of transaction insulation in Hibernate | No |
| What is in the Collections Hiorarchies API | No |
| TREMAP class, which data rod underly | No |
| What is the complexity of the binary search | No |
| Why do you need Future | No |
| Why do you need Completablefuture | No |
| JDBC is the implementation or specification | No |
| Why load a database driver | No |
| What is Statement | No |
| What types of statement are there | No |
| What is JPA | No |
| What is n+1 select problem | No |
| Final use options | No |
| What is the ITERABLE interface | No |
| What is REST API | No |
| What is the difference between a functional approach and object-oriented | No |
| What is the transmission of parameters in Java and how it happens | No |
| What principle of OOP does the reduction of the methods belong | No |
| What are Immutable objects | No |
| With what functional interface do we work in the MAP () method | No |
| What is Named Query in Hibernate | No |
| What is BeanpostProcessor | No |
| What is Bean Scope | No |
| What types of scope exist | No |
| What does the framework Spring do | No |
| What is oc and di | No |
| What is the difference between an ordinary object from Bean | No |
| What is Maven | No |
| Why do we use access modifiers | No |
| Is it the correct statement that the String massif is the Char | No |
| What are the key classes Exception | No |
| How can you process exceptions | No |
| What is a phantom reading | No |
| What does Fetchtype Lazy mean | No |
| What entities are involved in creating Bean | No |
| What is asynchronism | No |
| What are the advantages of the composition in the OOP | No |
| What can lead to a violation of the principles of Solid | No |
| What are the immobilization of the LIST interface | No |
| When to use LinkedList | No |
| What determines the range of permissible values of "primitives" | No |
| What does Peek () method do | No |
| How CAS mechanism works | No |
| Which gives the principle of incapsulation in real systems | No |
| Tell me about the third normal shape | No |
| What is the main task of caching in ORM | No |
| What difficulties can arise when working with caching | No |
| What problem does Framework Spring solve | No |
| NAVOV DIFFERENT OF OOP and functional programming | No |
| What is a composition | No |
| What are the advantages of the composition | No |
| As you understand Interface Segregation | No |
| What is Dependency Inversion | No |
| What is the covarian of types | No |
| How can you make a class unchanged | No |
| What is the difficulty of searching for a key method in the Treemap collection | No |
| What does Peek method do in Streamapi | No |
| What interface we get in the Foreach () method | No |
| Where static methods are stored in JVM memory | No |
| How to optimize the work of Hibernate | No |
| How to perfectly organize the CI/CD process | No |
| Why is multiple inheritance prohibited | No |
| When Hashcode conflict in Hashmap occurs | No |
| What is a functional paradigm | No |
| What is in the center of the paradigm | No |
| What is callable | No |
| What is the meaning of multi -seating | No |
| What can lead to a violation of normalization | No |
| How are bins initialized in Spring | No |
| What does Transactional annotation in Spring Data do | No |
| What is CAS mechanism | No |
| What is the difference between Optimistic and Pessimistic Lock in Hibernate | No |
| What streamline collections in Java know | No |
| What is LinkedHashmap. | No |
| What lies "under the hood" Parallelstream () | No |
| Tell me about the methods of optimizing requests in the database | No |
| What is the algorithmic complexity of searching for an element by index | No |
| What is Join differ from Union | No |
| Tell me about Problem N+1 in Hibernate | No |
| What is ApplicationContext in Spring | No |
| As if implemented integration testing | No |
| Where static methods and variables are stored | No |
| Where objects are stored | No |
| What is "garbage" in terms of JVM | No |
| What is CAS mechanism | No |
| What groups of teams are there in SQL | No |
| What are transaction insulation levels | No |
| How to process the request (httpservlet) | No |
| What is the difference between the composition and inheritance | No |
| Mechanisms for the implementation of polymorphism | No |
| What are unchanged classes | No |
| What is the difficulty of inserting the element in Linkedlist | No |
| What is the difference between the volatility and atomicity | No |
| N+1 Problem, solutions in Hibernate | No |
| What are transactions promotion levels in Spring Data | No |
| What is a hypothetic method in Spring Data | No |
| What is CAP theorem | No |
| How the object differs from primitive | No |
| What algorithms for finding an element by array are known | No |
| Tell me about the concept of the Completablefuture class | No |
| Why can the design template be useful to a chain of responsibility | No |
| Bean is a class or object | No |
| What are propagation levels in transactions | No |
| What is the ideality of the method | No |
| What is the ideality of the method | No |
| Tell about yourself what goals you set | No |
| What is the permissible range for the type of SHORT data | No |
| What is the difference between a primitive Short from Class Short | No |
| How Java understands Generics | No |
| What idea does Arraylist realize | No |
| What does transient in Java mean | No |
| What does transient in Java mean | No |
| What idea does LinkedList realize | No |
| What is the difficulty of inserting the element in Linkedlist | No |
| What is the Comparable interface for | No |
| What can lead to a violation of data normalization | No |
| What can you reconcile Final | No |
| What is LinkedHashset | No |
| What is Hashset | No |
| What Phaser does | No |
| What are scope bean for | No |
| What is Socket | No |
| Why is the strategy template is used | No |
| I studied something except Java | No |
| As you understand the phrase java is OOP | No |
| Array is a primitive or object | No |
| What is the difficulty of adding an element to Array List | No |
| Which you know the most effective way to copy the array | No |
| What is a collision of a hash codes from the point of view of Hashmap | No |
| What problem does Walatayl solve | No |
| What tasks are solved using Join | No |
| How to make a database with Java application | No |
| What is the name of the document in which I can see everything about JDBC | No |
| What types of queries can I perform using hibernate | No |
| For complex requests where there are a lot of paraments that you need to use | No |
| What happens from the start of the Spring of the application to the first request to Postman | No |
| What is the difference between Hashmap and Hashset | No |
| What is Spring Data Repository | No |
| What is Spring Data Specification | No |
| What are the differences in component annotations | No |
| What is the difference between the configuration and the component | No |
| What is @transactional annotation | No |
| What will happen if the method is caused by the @transactional annotation method | No |
| What is the difference @Controller and @readController | No |
| How to effectively identify unproductive SQL - requests | No |
| How to deal with anomalies when performing transactions | No |
| What is Message Broker | No |
| What is asynchronous messages | No |
| What are non -blocking algorithms | No |
| What is the difference between Mono and Flux | No |
| What will happen if you apply Volatile in objects | No |
| How to ensure synchronization in a multi -thread environment | No |
| What is the Synchronized block in Java and what are the problems are there | No |
| What is the Database-Per-Service template | No |
| What is the EVEN Sourcing template | No |
| What tasks does Distributed Tracing solve | No |
| How to choose a strategy, template | No |
| How will Prototype Bean behave in the framework of Singleton | No |
| What you use as tracking your tasks | No |
| What FLO do you use when working with TASK | No |
| Tell me the difference between the List and Set interface | No |
| What is an executter-service | No |
| That with the exception of Interrupted Exception | No |
| What annotations you know to create bins | No |
| What is the promotion and bias of the transaction | No |
| Briefly tell me about your projects | No |
| Why inheritance is needed | No |
| What alternatives are there inheritance | No |
| Why the composition is more often recommended to use than inheritance | No |
| What is the main idea of the adapter | No |
| What is the idea of Autoboxing and Unboxing | No |
| What needs to be done in order to create a property class in Java | No |
| The basic differences between List and Linked List | No |
| What methods of processing are checked exceptions | No |
| What is Try/Catch | No |
| Is it possible to write try without Catch | No |
| What forms of writing Try/Catch know | No |
| What is the importance of Stack Trace in exceptions | No |
| What is understood by the context of error | No |
| What is constistence and chieftain | No |
| Is it possible to manage a monitor | No |
| What is a steameterized type | No |
| Is there a constructor for a static class | No |
| How to create a static generical method | No |
| What does Java mean two types of exceptions | No |
| What methods of processing in Java exist | No |
| Why is it necessary to close the resource | No |
| Is it possible to launch a Java application with only jre | No |
| What is ODBC | No |
| What does a static in Java mean | No |
| What is the difference between Exception and Error | No |
| Data transmission to Java is following the link or by value | No |
| What does the transmission mean by | No |
| Why do I need property classes and their main characteristics | No |
| What is the insulation or its absence | No |
| Is it possible to lower the level of access modifier | No |
| What are the main three methods for Servlet and what is their task | No |
| How Servlet works in multi -sided mode | No |
| Arraylist, what is the speed of access to the last element | No |
| What is the difference between PrepareDstatement and Statement | No |
| What is the relationship in the database | No |
| What is One to One | No |
| Give an example One to Many | No |
| What two main types of data integrity do you know | No |
| What types of constraints do you know | No |
| What is DDL, DML, DCL | No |
| How to fight the database from SQL Injection | No |
| What is the difference between Union and Union All | No |
| What are the main restrictions when working with Union operation | No |
| What is comit in SQL | No |
| What problem can the transaction set | No |
| What is the principle of abstraction | No |
| What is the difference between abstraction and polymorphism | No |
| What is the difference between Race Condition and Data Race | No |
| What methods of synchronization in Java do you know | No |
| What is the difference between Dependency Injection and Dependency Inversion | No |
| What is Dispatchers Roulette | No |
| What is the difference between inheritance and polymorphism | No |
| What is contract programming | No |
| Why is it so important to have a contract in Java | No |
| What are the main two types of Singletone implementation | No |
| What is a decorator | No |
| What is the decorator for | No |
| What does reflection mean | No |
| What does symmetry mean | No |
| Why do objects fall into Stringpoll | No |
| How objects fall into StringPoll | No |
| What is the problem of concatenation of lines in Java | No |
| How Stringbuilder solves the problem of concatenation | No |
| Are Stringbuilder faster than Stringbuffer if you remove synchronization | No |
| What is the reason for the existence of MAP as a data structure and Collection in CollectionFramework | No |
| What is the main vocation of the MAP interface | No |
| What are the basic implementations of InputoutPut Strem | No |
| What is the minimum unit for working with threads | No |
| What is the progressiveness of NIO | No |
| What is the meaning of buffering threads | No |
| What is the advantage of buffering | No |
| What is the advantage of buffering | No |
| How Track.h works | No |
| What will happen if we try to change the value of a private variable | No |
| What is the difference in aspects between Advice and Point | No |
| What is the difference in aspects between Advice and Point | No |
| Why logging is very often associated with aspects | No |
| Give an example of a relational database and a non | No |
| What is the meaning of restrictions | No |
| What are the restrictions | No |
| How is the access speed in SQL achieved | No |
| Primary Key is an index and why | No |
| What restrictions do Primarykey have | No |
| What is Asset principle | No |
| What negative phenomena in SQL know | No |
| What is meant by Dirtyread | No |
| What types of configurations do you know | No |
| Why is it necessary to use the configuration through annotations, and you should not use the aanotation through the configuration | No |
| In what cases would Java use configuration | No |
| What annotations you know for the message of Spring, so that it creates on the basis of these Bean annotations | No |
| What is the feature of Dependency Injection | No |
| What is Spring Data | No |
| What is the difference between Spring Data from Hibernate | No |
| How to fill the attributes in the class | No |
| What is JSON data storage format | No |
| What is characteristic of html | No |
| What is SELECT from SQL | No |
| How to make your first commit, add all files | No |
| How can you make a connection with a remote repository | No |
| How to download changes from a remote repository | No |
| What is Spring | No |
| What does the Spring Core module give | No |
| Try Catch with Resources what is it | No |
| What is Git for | No |
| What kind of Git commands do you know | No |
| What is MAP | No |
| Can a primitive key be | No |
| Map keys can be repeated | No |
| What are the data structures from Collection | No |
| What is SET | No |
| What is List | No |
| What is the difference between List and SET | No |
| What is Q and DQ | No |
| Does LinkedList have Q/DQ interfaces | No |
| What is a temporary complexity | No |
| What are Exception classes, what types of | No |
| What is the EXCEPTION inherited | No |
| Why are Stream needed | No |
| Stream API What paradigm uses | No |
| What are the types of Stream | No |
| Can a private method be in the interface | No |
| What is the name of the functional interface that accepts the filter | No |
| What Collect does | No |
| Is it possible to transform the collection into MAP | No |
| Can there be a constructor in the interface | No |
| Overloading the method what it means | No |
| What is a signature | No |
| There is String, String Builder, String Buffer what is it | No |
| What is the living cycle Maven | No |
| What is an oc container | No |
| What do you know about the annotation Predestroy | No |
| What gives an annotation of Service | No |
| What is Spring Web | No |
| What is Mock, Stab, Spy | No |
| How to connect a class with a database | No |
| Lazy vs eager loading, what is the difference | No |
| Why did the division of data types into Int, Long | No |
| What is the idea of primitive data types | No |
| What are programming patterns for | No |
| What is a container | No |
| What is the introduction of dependence | No |
| What is the difference between Spring Boot and Spring Context | No |
| Which annotation allows you to understand that bins are raising | No |
| How to connect your library in another project | No |
| What should be the conditions for the database to be considered a relational | No |
| How to prohibit leaving an empty column | No |
| Why do you need branches in Git | No |
| How to see the version of the previous commune | No |
| What are the types of branches of branches | No |
| How to find a mistake in the program | No |
| How can you test the program and protect yourself from errors | No |
| What types of cycles do you know | No |
| How the cycles differ from each other | No |
| Tell me briefly with which frameworks you worked | No |
| Which from the literature on Java read | No |
| What literature I read not according to Java | No |
| Did Java.util.concords use Java 5 | No |
| What in recent times I learned or read that you can advise | No |
| Tell me briefly what you did in programming | No |
| Tell me about your experience of translating the project to Java | No |
| What to do if there is no Right Join in the database, but there is Left Join | No |
| What is BDD | General |
| What are the merger strategies from the point of view of the database developer | No |
| As if implemented a table in a database for 100 million records, with a search on the Int32 column | No |
| How to make a quick search without sorting an integration of millions of values | No |
| What do you think about the test type of exceptions in Java | No |
| If I developed a library for working with http, I would use exceptions or something else | No |
| Why are the pools of connections in the database are needed | No |
| How the Close method works when working with the connection pulle to the database | No |
| Used Kotlin | No |
| What would I want to remove from Java | No |
| Whether it was spent with Content | No |
| Did you do any projects with many streams | No |
| What types of variables are in Java | No |
| What Java elements are responsible for inheritance | No |
| What is a reduction in the method | No |
| What is the class Pojo | No |
| How JPA differs from Hibernate | No |
| Can the entity class be abstract | No |
| What is Exception | No |
| Tell me about your success in programming | No |
| How can you optimize a highly loaded web service | No |
| What tools used in addition to Java | No |
| What is Branch in Git | No |
| How to check that your program works correctly | No |
| We have a web service and in logs it is written "Record Not Found" - how to understand | No |
| The user came and says that the data is not displayed, your actions | No |
| Need the "Delete Report from the System" button, your actions | No |
| What is the distance between the moon and the Earth | No |
| What are the principles of programming that help write a beautiful code you know | No |
| Tell me about the SEGREGATION interface | No |
| What are http methods | No |
| What are the HTTP queries methods | No |
| What is the difference between http requests | No |
| What is strong and weakness in the understanding of the code | No |
| What is atomic types and why they are needed | No |
| What are interfaces-markers and why they are not created now | No |
| What evolutionary development has received interfaces-markers and what replaced them | No |
| For what purpose is serialization applied | No |
| What is PECS principle and how it is used | No |
| Why can Immutable objects need in practice | No |
| What is error processing | No |
| What to do if Error flew out, can we catch it and somehow process it | No |
| It is known that when the method A is called, the exception will be issued, your actions | No |
| How to get a Cant Convert Modification Exception when working with a collection | No |
| Streams, what operations and types of operations are there | No |
| What functional interfaces do you know | No |
| What is the difference between Default Methods from Static Methods | No |
| What are the types of databases | No |
| What are the advantages and disadvantages of database types | No |
| What is the normalization of data in a relational database | No |
| Tell me about the syntax of the creation of the table in a relational database | No |
| How to change the table in a relational database | No |
| You know what a request plan is in a relational database | No |
| How Spring "under the hood" works | No |
| Why do you need Hibernate | No |
| That it is better to use Join or subclasses | SQL |
| What is the ORDER BY operator used for | SQL |
| How Group by processes Null value | SQL |
| List the main aggregate functions | SQL |
| What is the difference between Count (*) and Count ({column}) | SQL |
| What is operators: in, Between, Like | SQL |
| When the keyword UNION is used | SQL |
| What are the differences between Primary and Unique restrictions | SQL |
| Is the value in the column, which is imposed on the restriction of Foreign Key, is NULL | SQL |
| How to create an index | SQL |
| What is the difference between Delete and Truncate operators | SQL |
| Describe the difference between DATETIME and TIMESTAMP data | SQL |
| What is the purpose of Pivot and Unpivot operators in Transact-SQL | SQL |
| Tell me about the main functions of ranking in Transact-SQL | SQL |
| Why are Intersect operators used, Except in Transact-SQL | SQL |
| What are "anonymous classes" where they are used | Java Core |
| What is denormalization for | Databases |
| Criteria API | Databases |
| What is HQL | Databases |
| Is it true that primitive data types are always stored in the stack, and specimens of reference data types in a heap | Java Core |
| Tell me about the type of type, what is a decrease and increase in type | Java Core |
| Когда в приложении может быть выброшено исключение ClassCastException | Java Core |
| What are literals | Java Core |
| Why string is an unchanged and finalized class | Java Core |
| Why Char [] is preferable to string for storing password | Java Core |
| Why a line is a popular key in Hashmap in Java | Java Core |
| Is it possible to use lines in the design of Switch | Java Core |
| Why is the Clone () method announced in the Object class, and not in the Cloneable interface | Java Core |
| What is the "default constructor" | Java Core |
| How the constructors differ by defending, copying and constructor with parameters | Java Core |
| Where and how you can use a closed constructor | Java Core |
| Tell me about the classes-loaders and about dynamic class loading | Java Core |
| Equals () gives rise to the ratio of equivalence, what properties does this attitude have | Java Core |
| How are Hashcode () and Equals () methods in class Objecte implemented | Java Core |
| Are there any recommendations about which fields should be used when counting Hashcode () | Java Core |
| Which operator allows you to force the exception | Java Core |
| What is the keyword of Throws talking about | Java Core |
| How to write your own ("user") exception | Java Core |
| What are the Unchered Exception | Java Core |
| What is Error | Java Core |
| Can one Catch block catch several exceptions at once | Java Core |
| Is Finally a block always executed | Java Core |
| Are there any situations when the Finally block is not completed | Java Core |
| Can the Main method throw out the exclusion outside and if so, then where the processing of this exception will occur | Java Core |
| What is "Internationalization" | Java Core |
| What is "localization" | Java Core |
| Differences of Softreference from Weakreference | Java Core |
| How to write immutable grade | Java Core |
| Intermediate operations in Stream API | Java Core |
| The life cycle of the Servtov | Java Core |
| What is Default Method on Interface | Java Core |
| Using the InstanceOF operator | Java Core |
| Is adding always to ArrayList the complexity O (1) | Java Core |
| Did generics always exist in Java | Java Core |
| What is WildCarts | Java Core |
| What are the main JCF interfaces and their implementation | Java Collections |
| What is the difference between Java.util.collection and Java.util.collections classes | Java Collections |
| Give examples of iterators realizing Fail-Safe behavior | Java Collections |
| How the enumeration and iterator differ | Java Collections |
| How it is the itrable and iterator | Java Collections |
| How it is interconnected by iterable, iterator and “for-each” | Java Collections |
| Compare Iterator and Listiterator. | Java Collections |
| What will happen when iterator.next () call it without preliminary call iterator.hasnext () | Java Collections |
| How the collection behaves if it call iterator.remove () | Java Collections |
| How the already instituteed iterator will behave for Collection, if you call collection.remove () | Java Collections |
| How to avoid ConcurrentModificationException during the enforcement of the collection | Java Collections |
| Which collection implements FIFO service discipline | Java Collections |
| Which collection implements the discipline of Filo service | Java Collections |
| Why added ArrayList if there was already Vector | Java Collections |
| That works faster than Arraylist or LinkedList | Java Collections |
| What the worst time of the Contains () method for the element that is in LinkedList | Java Collections |
| What is the worst time of the Contains () method for the element that is in Arraylist | Java Collections |
| What the worst time of the Add () method for linkedlist | Java Collections |
| What the worst time of the Add () method for Arraylist | Java Collections |
| How is the removal of elements from Arraylist, how in this case the size of Arraylist changes in this case | Java Collections |
| Offer an effective algorithm for removing several nearby elements from the middle of the list implemented by Arraylist | Java Collections |
| How much additional memory is needed when calling Arraylist.add () | Java Collections |
| How much is the addition of memory when calling linkedlist.add () | Java Collections |
| Assess the number of memory for storage of one BYTE type primitive in LinkedList | Java Collections |
| Assess the number of memory for storage of one BYTE type primitive in Arraylist | Java Collections |
| Compare the interfaces Queue and Deque | Java Collections |
| Who expands whom: Queue expands Deque, or Deque expands Queue | Java Collections |
| Why is LinkedList implement both List and Deque | Java Collections |
| How to sort out LinkedList elements in the reverse order without using a slow get (index) | Java Collections |
| Which allows you to make priorityqueue | Java Collections |
| Stack is considered "outdated", which is recommended to replace it, why | Java Collections |
| What is Identityhashmap for | Java Collections |
| What is the difference between Hashmap and IdentityHamap | Java Collections |
| Why is Weakhashmap used | Java Collections |
| What is the difference between Hashmap and Weakhashmap | Java Collections |
| What is the “sorting” of SortedMap, in addition to the fact that tostring () displays all elements in order | Java Collections |
| What is the assessment of temporary complexity of operations on elements from Hashmap, whether Hashmap guarantees the specified complexity of the sample of the element | Java Collections |
| Is the situation when Hashmap degenerates into the list even with keys having different hashcode () | Java Collections |
| Why you can not use byte [] as a key in hashmap | Java Collections |
| What the worst time of the Get (Key) method for the key, which is not in hashmap | Java Collections |
| What the worst time of the Get (Key) method for the key that is in Hashmap | Java Collections |
| How many transitions are at the time of calling Hashmap.get (Key) on the key that is in the table | Java Collections |
| How many new objects are created when you add a new element to hashmap | Java Collections |
| How and when there is an increase in the number of baskets in hashmap | Java Collections |
| Explain the meaning of the parameters in the constructor Hashmap (Intialcapacy, Float LoadFactor) | Java Collections |
| Will Hashmap work if all added keys will have the same Hashcode () | Java Collections |
| How to sort all the keys Map | Java Collections |
| How to sort out all MAP values | Java Collections |
| How to sort through all pairs of "key-meaning" in MAP | Java Collections |
| What will happen if you add elements to Treeset by increasing | Java Collections |
| For Enum there is a special class Java.util.enumset, why, why the authors did not suit Hashset or Treeset | Java Collections |
| What are the ways to sort out the list elements | Java Collections |
| How can synchronized objects of standard collections be obtained | Java Collections |
| How to get a collection only for reading | Java Collections |
| How to copy the elements of any Collection in an array with one line | Java Collections |
| How to convert Hashset to Arraylist one line with one line | Java Collections |
| How to convert Arraylist into Hashset one line with one line | Java Collections |
| Collections.emptylist () or new copy | Java Collections |
| Whether Hashmap guarantees the specified complexity of the element sample | Java Collections |
| What is the maximum number of hashcode () values | Java Collections |
| What are the main SET implementation | Java Collections |
| What are the main implementation of MAP | Java Collections |
| Copyonwrite collection | Java Collections |
| How to get an endless cycle using hashmap | Java Collections |
| Why MAP is not inherited from Collection | Java Collections |
| Why you can not use byte [] as a key in hashmap | Java Collections |
| What tree lies in the implementation of Treeset | Java Collections |
| Why there are no specific implementations of the Iterator interface | Java Collections |
| What innovations appeared in Java 8 and JDK 8 | Java 8 |
| What variables have access to lambda-expression | Java 8 |
| How to sort the list of lines using lambda expression | Java 8 |
| What types of links to methods do you know | Java 8 |
| Explain the expression system.out :: println | Java 8 |
Why are the functional interfaces of Function <T, R>, DOUBLEFUNCTION <L>, IntFUNCTION <L>, LONGFUNCTION <R> |
Java 8 |
Why are the functional interfaces of Binaryoparator <t>, DoubleBinaryoprator, Intbinaryoprator, Longbinaryoprator |
Java 8 |
Why are the functional interfaces Predicate <t>, DoublePredicate, IntPredicate, Longpredicate |
Java 8 |
Why are the functional interfaces of consumer <t>, DoubleConsumer, Intconsumer, Longconsumer |
Java 8 |
Why do you need a functional interface biconsumer <t ,u> |
Java 8 |
Why do you need a functional interface bifunction <t, u, r> |
Java 8 |
Why do you need a functional interface bipredicate <t ,u> |
Java 8 |
Why are functional interfaces of the type _to_FUNCTION |
Java 8 |
Why are the functional interfaces of TODOBLEBIFUNCTION <T, U>, tointBifunction <T, U>, Tolongbifunction <T, U> |
Java 8 |
What are the functional interfaces of TODOBLEFUNCTION <T>, tointFUNction <T>, TOLONGFUNCTION <T> ` |
Java 8 |
What are the functional interfaces of Objdobleconsumer <t>, objintconsumer <t>, objlongconsumer <t> ` |
Java 8 |
| What is Stringjoiner | Java 8 |
| How to call the Default interface method in the class implementing this interface | Java 8 |
| What is a Static interface method | Java 8 |
| How to call a static interface method | Java 8 |
| What are the ways to create stream | Java 8 |
| What is the difference between Collection and Stream | Java 8 |
| What is the Collect () method in straps for | Java 8 |
| Why are the MAP () and Maptoint (), MaptodOble (), Maptolong () are intended in streams. | Java 8 |
| Why in straps the LIMIT () method is intended | Java 8 |
| Why is the Sorted () method intended in streams | Java 8 |
| Why are the Flatmap (), Flatmaptoint (), FlatmaptodOble (), Flatmaptolong () methods for straps are intended for streams. | Java 8 |
| What final methods of working with streams do you know | Java 8 |
| What intermediate methods of working with streams do you know | Java 8 |
| What additional methods for working with associative arrays (Maps) appeared in Java 8 | Java 8 |
| What is LocalDetetime | Java 8 |
| What is ZoneDDATETEME | Java 8 |
| What is NASHORN | Java 8 |
| What is JJS | Java 8 |
| What class appeared in Java 8 for coding/decoding data | Java 8 |
| What are the main characteristics of the templates | Patterns |
| Types of design templates | Patterns |
| Give examples of the main design templates | Patterns |
| Give examples of generating design templates | Patterns |
| Give examples of structural design templates | Patterns |
| Give examples of behavioral design templates | Patterns |
| What is "antipatttern", what antipatterns you know | Patterns |
| What is "integration testing" | Testing |
| What are the types of test objects | Testing |
| How Stub differs from Mock | Testing |
| What are "fixed" | Testing |
| What are the annotations of fixes in Junit | Testing |
| Why junit uses @ignore annotation | Testing |
| How to change the standard behavior of serialization/deserization | Serialization |
| How to exclude fields from serialization | Serialization |
| What influence do Static and Final field modifiers have on serialization | Serialization |
| How to prevent serialization | Serialization |
| How to create your own serialization protocol | Serialization |
| What is the role of the Serialversionuid field in serialization | Serialization |
| When it is worth changing the value of the Seerialversionuid field | Serialization |
| What is the problem of Singleton serialization | Serialization |
| What are the methods of monitoring the values of the deserialized object | Serialization |
| What features of NIO do you know | Streams |
| What are "channels" | Streams |
| What are the types of input/output streams | Streams |
| What are the main classes of input/output streams | Streams |
| In which packages are the classes of input/output streams | Streams |
| What kind of Inputstream class subclasses do you know why they are intended | Streams |
| What is PushBackinputstream used for | Streams |
| Why is Sequenceinputstream used | Streams |
| Which class allows you to read data from the input byte stream in the format of primitive data types | Streams |
| What subclasses of the Outputstream class know what they are for | Streams |
| What are the Reader class subclasses what they are for | Streams |
| What kind of Writer class subclasses do you know why they are intended | Streams |
| What is the difference between Printwriter class from Printstream | Streams |
| What is different and what in common has Inputstream, outputstream, Reader, Writer | Streams |
| What classes allow you to convert bytic stream into symbolic and vice versa | Streams |
| What classes allow you to accelerate reading/recording through the use of the buffer | Streams |
| Pattern observer | General |
| Which class is designed to work with the elements of the file system | Streams |
| What are the File class methods | Streams |
| What do you know about the FileFilter interface | Streams |
| What do you know about Randomaccessfile | Streams |
| What kind of access to the file does Randomaccessfile have | Streams |
| Which classes support reading and recording stream in a compressed format | Streams |
| Is it possible to redirect the stream of standard input/output | Streams |
| What is the symbol by a separator when specifying a path in the file system | Streams |
| What is the "absolute path" and "relative path" | Streams |
| What is a "symbolic link" | Streams |
| What is www | WEB |
| What is W3C | WEB |
| What are OSI model levels | WEB |
| What is TCP/IP | WEB |
| What is UDP | WEB |
| What is the difference between TCP and UDP | WEB |
| What is a data transfer protocol | WEB |
| What data transmission protocols do you know | WEB |
| What is FTP | WEB |
| What is MIME type | WEB |
| What is Web Server | WEB |
| What is Web Application | WEB |
| What is Application Server | WEB |
| What is the difference between Web Server and Application Server | WEB |
| What is Ajax, how this technology is fundamentally arranged | WEB |
| What is WebSocket | WEB |
| What is json scheme | WEB |
| What is "HTML" | WEB |
| What is "HTML" | HTML |
| What is "XHTML" | HTML |
| What is doctype and why it is needed | HTML |
What is the <head> tag is intended for |
HTML |
What is the difference between <div> from <span> |
HTML |
| How are comments in HTML | HTML |
| How is the address of the document to go to | HTML |
| How to make a link to the email address | HTML |
Why is the tag <em> |
HTML |
Why are the tags <ol>, <ul>, <li> are intended for |
HTML |
Why are the tags <dl>, <dt>, <dd> |
HTML |
Why are the tags <tr>, <TH>, <td> are designed |
HTML |
Is it necessary to write an ALT attribute in the <img> tag |
HTML |
| In which register is it better to write a html code | HTML |
| What is "Mnemonics (Entity)" | HTML |
| What is CSS | CSS |
| How CSS contains comments | CSS |
| What is a "selector" | CSS |
| List the main types of selectors | CSS |
| What is Psevdoklass | CSS |
| What are the attribute selectors | CSS |
| What is the difference between #MY and .MY | CSS |
| What is the difference between Margin and Padding | CSS |
| What is the difference between the values of 0 and Auto in the margin property | CSS |
| What property does the background color set | CSS |
| What is the property of Clear for | CSS |
| What is a "messaging" | OOP |
| Tell me about the interface | OOP |
| What implies in terms of the principles of OOP expression "is" and "has" | OOP |
| What is the difference between composition and aggregation | OOP |
| What languages are on JVM | General |
| What is reactive programming | General |
| What is DDD | General |
| What is FDD | General |
| CI/CD tools | General |
| Memory leak | General |
| Memory leaks in java | General |
| The complexity of fast sorting | General |
| What is Big O | General |
| What is a lazy load | General |
| What is the difference between "competition" and "parallelism" | Multithreading |
| What is "cooperative multitasking" | Multithreading |
| What type of multitasking is Java uses, what is the condition of this choice | Multithreading |
| What is ORDERING | Multithreading |
| What is AS-IF-SERIAL SEMANTICS | Multithreading |
| What is Sequential Consistency | Multithreading |
| What is Visibleity | Multithreading |
| What is atomicity | Multithreading |
| What is Mutual Exclusion | Multithreading |
| What is Safe Publication | Multithreading |
| What are "green threads" and whether they are in Java | Multithreading |
| What is the difference between the Start () and Run () methods | Multithreading |
| How to start a stream forcibly | Multithreading |
| In what states can a stream be | Multithreading |
| Is it possible to create new specimens of the class while the Static Synchronized method is performed | Multithreading |
| Why might be needed private mjyutex | Multithreading |
| What is the difference between notify () and notifyall () | Multithreading |
| Why are Wait () and notify () methods only in a synchronized block | Multithreading |
| What is the difference between the Wait () method with the parameter and without the parameter | Multithreading |
| What is the difference between the methods Thread.sleep () and Thread.yld () | Multithreading |
| How the Thread.join () method works | Multithreading |
| What is Livelock | Multithreading |
| How to check whether the threads holds a monitor of a certain resource | Multithreading |
| What object is synchronization when the Static Synchronized method is called | Multithreading |
| Why is the keyword Synchronized | Multithreading |
| What are the differences between Volatile and atomic variables | Multithreading |
| What are the differences between Java.util.conatomic*.compareandswap () and java.util.concurrent.atomic*.weakcompareandswap () | Multithreading |
| Is it possible to make the main stream of the program demon | Multithreading |
| What does it mean to "sleep" a stream | Multithreading |
| What is FutureTask | Multithreading |
| What are the differences between CyclicBarrier and Countdownlatch | Multithreading |
| Is there a way to solve the problem of Race Condition | Multithreading |
| How to stop a thread | Multithreading |
| Why is it not recommended to use the Thread.stop () method | Multithreading |
| What happens when an exception is thrown out in the stream | Multithreading |
| What is the difference between Interrupted () and Isinterrupted () | Multithreading |
| What is a "thread pool" | Multithreading |
| What size should there be a thread pool | Multithreading |
| What will happen if the turn of the thread pool is already filled, but a new task is served | Multithreading |
| What is the difference between the Submit () and execute () methods in the thread pool | Multithreading |
| What are the differences between the CTEK (stack) and a heap (heap) in terms of multi -use | Multithreading |
| How to share data between two threads | Multithreading |
| How to get a dump stream | Multithreading |
| What is Threadlocal-cross | Multithreading |
| What are the differences between Synchronized and Reentrantlock | Multithreading |
| What is a "blocking method" | Multithreading |
| What is "Framwork for Fork/Join" | Multithreading |
| What is Double Checked Locking Singleton | Multithreading |
| How to create a streamline Singleton | Multithreading |
| How are the immutable objects useful | Multithreading |
| What is Busy Spin | Multithreading |
| List the principles that you follow in multi -seating programming | Multithreading |
| What are the types of logs | Logging |
| What parts are the log4j journaling system | Logging |
| What is Logger in LOG4J | Logging |
| What is Appender in LOG4J | Logging |
| What is Layout in LOG4J | Logging |
| List the levels of journaling in LOG4J, What are the procedure for their priority | Logging |
| What are the methods of configuration log4j | Logging |
| What is SQL-infection | Databases |
| What are the NOSQL database | Databases |
| What is charming | Databases |
| What are the basic properties of the transaction | Databases |
| When full scanning of data set is more profitable for index access | Databases |
| Does it make sense to index data that have a small number of possible values | Databases |
| What is the difference between cluster and non -class indexes | Databases |
| What types of indices exist | Databases |
| What are the types of connections in the database, give examples | Databases |
| What is alternative (alternate) key | Databases |
| What is a potential (Candidate) key | Databases |
| What is a composite (composite) key | Databases |
| What is a simple key | Databases |
| What is a "database management system" | Databases |
| Who calls the controller methods | No |
| What is Lombok? | General |
Why are the functional interfaces of Unaryoprator, Doubleunaryoprator, IntunaryOperator, Longunaryoprator |
Java 8 |
| Tell me about your background | General |
| What is D in Solid? | General |
| Tell me about your most interesting project | General |
| What is the easiest way to implement caching | General |
| What is the difference between static and dynamic binding in Java | OOP |
| What is Lombok | General |
| What is TDD | General |
| What is the relationship between JS and Java | General |
| What is your total experience in Java | General |
| Tell me why are you in java | General |
| Where he was engaged in programming | General |
| Where did you study | General |
| How you evaluate yourself | General |
| Which prompted to dwell on another programming language | General |
| How much do you do java | General |
| In what university did you study | General |
| Did Java do somewhere else | General |
| Caching only works with databases or not | General |
| What is the caching for | General |
| What languages do you know that use byte code | General |
| What interesting tasks had to be solved | General |
| What goals do you set for yourself | General |
| What are the approaches to organizing the development process | General |
| How do you use SOLID principle of openness-covering when designing | General |
| Tell me about how you understand the principles of Solid based on your experience | General |
| What position I would like to claim | General |
| How you estimate your level | General |
| What tasks did the patterns solved | Patterns |
| Where you can use singleton | Patterns |
| What patterns used besides Singleton | Patterns |
| What is the advantage of the Builder pattern over the constructor | Patterns |
| Whether you use the Comand pattern in work | Patterns |
| Why do you need a pattern Command | Patterns |
| Which structure acts as quickly as possible to the Comand pattern than it can be replaced | Patterns |
| Tell me something about microservice interaction | Patterns |
| What are the pluses of microservices before the monolith | Patterns |
| As if organized the interaction of several services | Patterns |
| What synchronization channels used to organize the interaction of several services | Patterns |
| What design patterns do you use | Patterns |
| Tell me about your design experience | Patterns |
| What are design patterns | Patterns |
| What is the lack of patterns | Patterns |
| What is the difference between the Builder and Facade design template | Patterns |
| What teams do you use in Git | Git |
| Why are you needed versions control systems? | Git |
| What are the general branching strategies do you know | Git |
| How to drain two different branches | Git |
| What is the difference between the approaches of Trunk BASD and Feature Branch | Git |
| What tests do you write and how | Testing |
| What is the difference between unit tests and integration | Testing |
| What is unit testing | Testing |
| What are restrictions in SQL | SQL |
| What are stored procedures and what method of calling through JDBC | SQL |
| What is Join | SQL |
| What Merge does | SQL |
| Why is SQL HAVING | SQL |
| Tell me about the full syntax of Select in a relational database | SQL |
| What are triggers in a relational database | SQL |
| What is a cursor in a relational database | SQL |
| What are the SQL operators | SQL |
| What does NULL mean in SQL | SQL |
| What is a “temporary table”, for which it is used | SQL |
| What is a “performance”, View, and why it is used | SQL |
| Life cycle Maven | Tools |
| Tell me about the structure of the POM file in the Maven packages manager. | Tools |
| What is the Dependence Management section for | Tools |
| What is the difference between Kubernetes Docker | Tools |
| How Docker differs from a virtual machine | Tools |
| What is Message Broker | Tools |
| What is Swagger for | Tools |
| What do you use Mavel or Gradeel when assembling the project | Frameworks |
| Tell me about transitivity | Frameworks |
| What is XML | XML |
| What is XSD scheme | XML |
| What is DTD | XML |
| How the Well-Formed XML differs from Valid XML | XML |
| What is the "namespace" in XML | XML |
| What types exist in XSD | XML |
| What are the XML reading methods, describe the strengths and weaknesses of each method | XML |
| When to use DOM, and when SAX, Stax analyzers | XML |
| What are the ways of recording XML | XML |
| What is JAXP | XML |
| What is XSLT | XML |
| What is UML what is a “diagram”, “notation” and “metamodel” in UML | UML |
| What are the types of diagrams | UML |
| What types of relationships exist in the structural diagram of classes | UML |
| What will happen if in ApplicationContext you try to get the same bin | Spring |
| Where and when used Prototype | Spring |
| Which default Scope is used in Spring | Spring |
| Where could Prototype be used | Spring |
| What is the difference in repository annotations, Component, Controller, Service | Spring |
| What is the difference between RestController and Controller | Spring |
| Where the Bean annotation is used | Spring |
| What are the methods of configuration Spring applications | Spring |
| Tell the structure of Framework Collection | Spring |
| What the largest project did you do using Spring | Spring |
| How to create singleton-tin when starting a Spring application | Spring |
| What types of proxies do you know | Spring |
| The difference in annotations Service, Repository, Controller | Spring |
| How to quickly make a rest service | Spring |
| What is the difference between RestController from Controller | Spring |
| What is the BEAN annotation for | Spring |
| Why do you need a Spring Framework | Spring |
| How to write a web application on Java | Spring |
| How SOAP differs from REST | Spring |
| How to write a Delete method | Spring |
| What is JWT for | Spring |
| What is the difference between authentication and authorization | Spring |
| What is the life cycle of an object that creates Spring | Spring |
| What is the difference between Spring Component, Repository and Service Abstracts | Spring |
| What is the difference between the component and bina | Spring |
| What is the difference between Filters, Interceptors, and Listeners in Spring | Spring |
| What does the SCAN component do | Spring |
| How many contexts can be in Spring | Spring |
| Is it possible to create two singleton in Spring. | Spring |
| How the context works in Spring | Spring |
| How can you create Servlett in Spring'e | Spring |
| How to create a controller in Spring | Spring |
| Now in Spring it is not necessary to indicate the AbowireD annotation, why is it so | Spring |
| What configuration will be more priority: XML, Java or Annotation | Spring |
| Which of the configuration, XML, Java Annotation, you prefer more | Spring |
| What configuration would be removed | Spring |
| Where it is more convenient to use Java configuration, and where is XML configuration | Spring |
| What is Spring Framework | Spring |
| Tell me what is Inversion of Control | Spring |
| What types of implementation of addiction do you know | Spring |
| What areas of visibility in Spring you know | Spring |
| What is Spring IOC container in Spring. | Spring |
| What IOC implementations know | Spring |
| How do you use Dependency Injection | Spring |
| Request We can use in all Spring applications | Spring |
| What Scope can be used for any application | Spring |
| What is the difference between Request Mapping and Put Mapping | Spring |
| Why REST is needed | Spring |
| As a client can understand what came to the browser from the server | Spring |
| How Dispatcher Servlet "understands" which method to call | Spring |
| What is http type | Spring |
| How dependency Injection can be applied to Spring Bean | Spring |
| What is a context | Spring |
| What is Scope | Spring |
| What we need to make Spring MVC earn | Spring |
| Can it turn out so that there is no controller in the context | Spring |
| What can be returned data types in Spring MVC | Spring |
| What is the difference between IOC and Dependency Injection | Spring |
| What does Dependency Injection give us | Spring |
| Have you heard anything about Spring MVC | Spring |
| What are the advantages of the sergete technology over CGI Common Gateway Interface | Servlets |
| What is the structure of the web project | Servlets |
| What is the "Container of the Servlets" | Servlets |
| Why do you need application servers if there are server containers | Servlets |
| As a serviceman container controls the life cycle of the Serlet, when and what methods are called | Servlets |
| What is a "deployment descriptor" | Servlets |
| What actions need to be done when creating Servlets | Servlets |
| In which case is it required to override the service() method | Servlets |
| Does it make sense to determine the constructor for the servlet | Servlets |
Feel free to contribute to this list by creating a pull request or raising an issue!
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