Updating date for blog post (kubernetes#17816)

content/en/blog/_posts/2019-08-28-cloud-native-java-controller-sdk.md → content/en/blog/_posts/2019-11-26-cloud-native-java-controller-sdk.md

@@ -2,51 +2,51 @@
 ---
 layout: blog
 title: "Develop a Kubernetes controller in Java"
-date: 2019-08-28
+date: 2019-11-26
 slug: Develop-A-Kubernetes-Controller-in-Java
 ---
 
 **Authors:** Min Kim (Ant Financial), Tony Ado (Ant Financial)
 
-The official [Kubernetes Java SDK](https://github.com/kubernetes-client/java) project 
-recently released their latest work on providing the Java Kubernetes developers 
-a handy Kubernetes controller-builder SDK which is helpful for easily developing 
+The official [Kubernetes Java SDK](https://github.com/kubernetes-client/java) project
+recently released their latest work on providing the Java Kubernetes developers
+a handy Kubernetes controller-builder SDK which is helpful for easily developing
 advanced workloads or systems.  
 
 ## Overall
 
 Java is no doubt one of the most popular programming languages in the world but
-it's been difficult for a period time for those non-Golang developers to build up 
+it's been difficult for a period time for those non-Golang developers to build up
 their customized controller/operator due to the lack of library resources in the 
-community. In the world of Golang, there're already some excellent controller 
+community. In the world of Golang, there're already some excellent controller
 frameworks, for example, [controller runtime](https://github.com/kubernetes-sigs/controller-runtime),
 [operator SDK](https://github.com/operator-framework/operator-sdk). These
-existing Golang frameworks are relying on the various utilities from the 
-[Kubernetes Golang SDK](https://github.com/kubernetes/client-go) proven to 
-be stable over years. Driven by the emerging need of further integration into 
-the platform of Kubernetes, we not only ported many essential toolings from the Golang 
-SDK into the kubernetes Java SDK including informers, work-queues, leader-elections, 
-etc. but also developed a controller-builder SDK which wires up everything into 
+existing Golang frameworks are relying on the various utilities from the
+[Kubernetes Golang SDK](https://github.com/kubernetes/client-go) proven to
+be stable over years. Driven by the emerging need of further integration into
+the platform of Kubernetes, we not only ported many essential toolings from the Golang
+SDK into the kubernetes Java SDK including informers, work-queues, leader-elections,
+etc. but also developed a controller-builder SDK which wires up everything into
 a runnable controller without hiccups.
 
 
 ## Backgrounds
 
 Why use Java to implement Kubernetes tooling? You might pick Java for:
 
-- __Integrating legacy enterprise Java systems__: Many companies have their legacy 
-systems or frameworks written in Java in favor of stability. We are not able to 
+- __Integrating legacy enterprise Java systems__: Many companies have their legacy
+systems or frameworks written in Java in favor of stability. We are not able to
 move everything to Golang easily.
 
-- __More open-source community resources__: Java is mature and has accumulated abundant open-source 
-libraries over decades, even though Golang is getting more and more fancy and 
-popular for developers. Additionally, nowadays developers are able to develop 
+- __More open-source community resources__: Java is mature and has accumulated abundant open-source
+libraries over decades, even though Golang is getting more and more fancy and
+popular for developers. Additionally, nowadays developers are able to develop
 their aggregated-apiservers over SQL-storage and Java has way better support on SQLs.
 
 
 ## How to use?
 
-Take maven project as example, adding the following dependencies into your dependencies: 
+Take maven project as example, adding the following dependencies into your dependencies:
 
 ```xml
 <dependency>
@@ -56,8 +56,8 @@ Take maven project as example, adding the following dependencies into your depen
 </dependency>
 ```
 
-Then we can make use of the provided builder libraries to write your own controller. 
-For example, the following one is a simple controller prints out node information 
+Then we can make use of the provided builder libraries to write your own controller.
+For example, the following one is a simple controller prints out node information
 on watch notification, see complete example [here](https://github.com/kubernetes-client/java/blob/master/examples/src/main/java/io/kubernetes/client/examples/ControllerExample.java):
 
 ```java
@@ -81,22 +81,21 @@ on watch notification, see complete example [here](https://github.com/kubernetes
             .build();
 ```
 
-If you notice, the new Java controller framework learnt a lot from the design of 
+If you notice, the new Java controller framework learnt a lot from the design of
 [controller-runtime](https://github.com/kubernetes-sigs/controller-runtime) which
-successfully encapsulates the complex components inside controller into several 
-clean interfaces. With the help of Java Generics, we even move on a bit and simply 
+successfully encapsulates the complex components inside controller into several
+clean interfaces. With the help of Java Generics, we even move on a bit and simply
 the encapsulation in a better way.
 
-As for more advanced usage, we can wrap multiple controllers into a controller-manager 
-or a leader-electing controller which helps deploying in HA setup. In a word, we can 
+As for more advanced usage, we can wrap multiple controllers into a controller-manager
+or a leader-electing controller which helps deploying in HA setup. In a word, we can
 basically find most of the equivalence implementations here from Golang SDK and
 more advanced features are under active development by us.
 
 ## Future steps
 
 The community behind the official Kubernetes Java SDK project will be focusing on
 providing more useful utilities for developers who hope to program cloud native
-Java applications to extend Kubernetes. If you are interested in more details, 
+Java applications to extend Kubernetes. If you are interested in more details,
 please look at our repo [kubernetes-client/java](https://github.com/kubernetes-client/java).
 Feel free to share also your feedback with us, through Issues or [Slack](http://kubernetes.slack.com/messages/kubernetes-client/).
-