From 0302867021b95e649fb8539cd9da354e6a87790c Mon Sep 17 00:00:00 2001
From: sebitza1020 <munteansebastian@gmail.com>
Date: Sun, 7 Jun 2020 01:31:13 +0300
Subject: [PATCH] Commit initial: Adaugare proiect in git.

---
 Server.iml                                    |  43 +++++++++++++
 out/production/Server/ClientHandler.class     | Bin 0 -> 2896 bytes
 out/production/Server/DBConn.class            | Bin 0 -> 1102 bytes
 out/production/Server/Main.class              | Bin 0 -> 477 bytes
 out/production/Server/PhoneNumberData.class   | Bin 0 -> 564 bytes
 .../Server/PhoneNumberDataTest.class          | Bin 0 -> 985 bytes
 out/production/Server/Server.class            | Bin 0 -> 2082 bytes
 src/ClientHandler.java                        |  60 ++++++++++++++++++
 src/DBConn.java                               |  26 ++++++++
 src/Main.java                                 |   7 ++
 src/PhoneNumberData.java                      |  15 +++++
 src/PhoneNumberDataTest.java                  |  22 +++++++
 src/Server.java                               |  31 +++++++++
 13 files changed, 204 insertions(+)
 create mode 100644 Server.iml
 create mode 100644 out/production/Server/ClientHandler.class
 create mode 100644 out/production/Server/DBConn.class
 create mode 100644 out/production/Server/Main.class
 create mode 100644 out/production/Server/PhoneNumberData.class
 create mode 100644 out/production/Server/PhoneNumberDataTest.class
 create mode 100644 out/production/Server/Server.class
 create mode 100644 src/ClientHandler.java
 create mode 100644 src/DBConn.java
 create mode 100644 src/Main.java
 create mode 100644 src/PhoneNumberData.java
 create mode 100644 src/PhoneNumberDataTest.java
 create mode 100644 src/Server.java

diff --git a/Server.iml b/Server.iml
new file mode 100644
index 0000000..06690f3
--- /dev/null
+++ b/Server.iml
@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module-library" scope="TEST">
+      <library name="JUnit5.4">
+        <CLASSES>
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter/5.4.2/junit-jupiter-5.4.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-api/5.4.2/junit-jupiter-api-5.4.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/apiguardian/apiguardian-api/1.0.0/apiguardian-api-1.0.0.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/opentest4j/opentest4j/1.1.1/opentest4j-1.1.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-commons/1.4.2/junit-platform-commons-1.4.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-params/5.4.2/junit-jupiter-params-5.4.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-engine/5.4.2/junit-jupiter-engine-5.4.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-engine/1.4.2/junit-platform-engine-1.4.2.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+    <orderEntry type="module-library">
+      <library>
+        <CLASSES>
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter/5.4.2/junit-jupiter-5.4.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-api/5.4.2/junit-jupiter-api-5.4.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/apiguardian/apiguardian-api/1.0.0/apiguardian-api-1.0.0.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/opentest4j/opentest4j/1.1.1/opentest4j-1.1.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-commons/1.4.2/junit-platform-commons-1.4.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-params/5.4.2/junit-jupiter-params-5.4.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-engine/5.4.2/junit-jupiter-engine-5.4.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-engine/1.4.2/junit-platform-engine-1.4.2.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+  </component>
+</module>
\ No newline at end of file
diff --git a/out/production/Server/ClientHandler.class b/out/production/Server/ClientHandler.class
new file mode 100644
index 0000000000000000000000000000000000000000..e9fddef39af45862de891924448bde2276aff05c
GIT binary patch
literal 2896
zcmaJ@`%@EF6#kaihPZ%4QSpJXB49wMwps+Ol@KItct}92R@)`q!b;c;*$v{OPy2pb
z`%wF~Roc#UrgjPzJL63Kt^OnZCpxv?-6W7y?GMR4d+#~lIrn_$+<R~TbK@p}HvH&C
z0SZ+VX(&dCf~CjxDZM4Go1-m*V@aWpC@9%wn1=JHg2IN)2fXm0RE1Z=5@=lO><C(>
zsi1UJI9b`-usM>J+e=Z73KdH=RKlmAEEqS0>2&MnNL(a|I5Hel;K^!B@Z}n+u!5=t
zl+YsP7#1C@B&ZvkJsEFVTyQ<C(ol`ngo{bds{87#)vyjVjM}zh<HAu;nN~H0(-L*3
zTsXgm4R}C7v0)}s)T&Nv8CFZD?&x7T8FiSO30J#T!zR=b)Ji$7`szIOK6f^w??HnC
zco9IOiY5(P(5zsUyR8g*t~xVwB562cXt0aBYDmMn)DX@vN82SG4`Qo|Z5kfJ!%R{x
zR8F7@RLP|av^<;0TqF;6C@AW*OyNZ<cB*L8(2iYs^^kVTjf%;X9=HD!Qs3}#Qq{is
z@De<VJt`j4uooQ)mfeFiZp^TQamyAgFILrIFFFxY(WPOZEW!%cW|0+A5tG`b2;*@T
zPiTmsCqK56wj(A8MiLe(fGO=~p0Z?l(8s04((yYYIboQ(BSyT~j{y}?4TF-Abj<nY
zOkqNT#Z46l7-IhzlhvD=7#2xc6<!SCN!dfqQaY^Rh~%T3MVzDPW6K@Ya12kAstJ8u
zFqoL`95kFUO17h$4%1q9FQ)G%U*=iYFbsB3MU3=1BI@vOf(@o%MV4jRE(`PROCa#9
zict+?FckO}$XQTPpowV_OF3eHN+eGzXt;kk5_>?{skjpr4zb4(S23Z%l*BJ$FQ~A@
zOfl_9#e{}Q@C1<OMz*l38p4?#&o51Gr=%}9)W3I7T25&=A@Nni?lO|L;{k*8c7~(<
zeZAq1a74xF90tREq3M`N$TLL6bL4+<$NM7-OOpQ=B>6Air>fmX3(3X}DcG0E$YO!E
z=e2xJ<K-{pHaDA>=?GdQg7ig<Y%LAy!*R~|B34X~AJCJA{LV}kIb#Ovqau=bing=r
zlPR8io}`EgV@mdv@9uJ;R>I^`WhAE{W#vkH63Jj}XM(9-p0>@e8wCYPy3Sc!AeHtC
zODS{ey38%)m1~)KHd782oG)X=#m0N|gu6Kv7qX<~Baqstl}g4$m*M6mZ|lvHOr8TB
zmgU$^Qcv^<XUrP0D@yQ%7hmEl6<^DC`$j>n%e#whm{ZocU{lC5G~Iz+dd#t8v0un7
z_Kad0G<|2;wGqo2PbD(E=GJLW%JU2dPbS1Y)Q{xoXV1=@sSHF=kH@3D0@^+JRzXuV
z6bS_f{Q-a1KwpnPW|_>PWBU(whXz9a#NvsxyI!ehBZql?CWCR^wuP<Ys)9{-W#L|%
zQ}Mlmn*Ud2OQtiytFoL=2=M4zDsNXxOXc<Hj=UH-LSFvv$Xl9Y0eGO}EdO8O*K7PP
z;#e2B4khp#)LE1T0>7ec4$Ee-GSE1SHG!sCtPgCN#l~x{{j2=1fy)01+RC>`8CKBm
z8hY~6*Cs3@F4(RvGG50U{GtyxLSDg?WQ;QII(dDgkkPz}l5|W39)6c_?Kb1s=&PT@
zW(w=)&=P6%ZJ)y<mr%ipmGjuG;3BFhubD&e7j*l2=g>cc(-a#i{f?nSjn{For)ds{
zZr~}PH*NQfg0`aSqAl|nDL`9sb@4ooOQ;Ri#h!Us1&{`Gbn(t#G}!2~8Nv(-rCv(G
zC1~#Kw4A+jERy#2JQX<2Fkh0Zb9i|MOR{U%m~mh`uHaN=Jj09rviqGL&){d=#2;KQ
zgv_tWY=ZBqQgT*FxejajURg(s8e00XhZ*c<4hOIiM^TGW=5dl*XHk!L(17>R$PG2o
z$2NLt!Bsw0e!^CI*^cYjL0@h3){0x$i9h++kbDjB0a%H1cnfcniEbPw(z|470R4E6
zbA|L2BJv01b(A*e@FDkgl`pFE_=py_SQF>*F(q=BVf_=zt<?A%n^d$`-a#`;RFqRz
zG35RWmDdXD@33$bt^ge>KK1siIHl6#McNlI<)3l%5czZdF5^3Xc`04N41PfMzkp}t
Ak^lez

literal 0
HcmV?d00001

diff --git a/out/production/Server/DBConn.class b/out/production/Server/DBConn.class
new file mode 100644
index 0000000000000000000000000000000000000000..18ce39261012a12dc1ed1e3a999821073b3a6a70
GIT binary patch
literal 1102
zcmZuwT~pIQ6g}G((xxet@=Xy1MBAbbilVlFj-XEkovDN4V;W)!wh5+zkssmj@Kx~x
zMrV9=#vi4gO#?0JWG2b(z31F>@7ewN>+5#_B|K0OK~zCZLl1fd(!0iip*IYtu0N^m
zTBa}1yKFnQzbX*T<+tL93k;iXv)DXry>1kDw`*o`-LnrYPlbx40!>2-eFFU*rnQFA
zY6&PWU2oH9S^{&qN+(+NJ=>|5^Icm3pd3e<sj@;TC|1(-hHDy)9k=C|78e(mbklWw
z!}PanabyHyp6mK?3<*%l2u2l*X&A?Zz(`PydiA!{4Z|_&mM4&^TmG8sIBe8*9f6Ji
z2<y@nO8s{y6fY}u=*kI9;(~%H4Ht2VgIs?ogB&DvbBb-6zc31B1O_|PdGyA#_N2H3
zE@Mu?6%ALBJ7-k&u;p7#(z^S!E2Onu{VC__Q?g|=%PI<(S8z?kbreqvoX?>_dlJ!*
z+Pde^J_zOfmh5Li!wuYIG1?*!ue5t2|0JTcV9nj8zx@^4u{QUcHOqTu)EeB$RHSoT
zhG)xlxG5M2<pwA2tk*J`{2iNTCRL@uuQrUm5R#x_r(;xe`P1?Oqg<T1+~t9QT6On5
z(|T-69mzJhC{r;_(GgyQ2p>AcKUFrzZ<IT{4-mM;)my}ZyxGDrL`FG5;&~y{pBcyu
zo?!ShvhR?r9AS3;3-TWbiD48IB#+`Y!BbH9<_$xF^eSU1Mw7@w!wmYc#OMg=v&^}J
zyTk*txEIJM@js2oZvuouv3yM{<SAo0l(rHG1BQ;E|3K;+CSM$5@gsDu-xD1PH1tsm
vFu;Z~<Qw9>mo17kNyf1fQtAB4;yr~=$ab)D2*6mNQ)?%L>I7C9iQxVpDr@g@

literal 0
HcmV?d00001

diff --git a/out/production/Server/Main.class b/out/production/Server/Main.class
new file mode 100644
index 0000000000000000000000000000000000000000..27870b6aa69b4400cf27553df798dcfd6f0a0817
GIT binary patch
literal 477
zcmZvZ%}&BV6ot<~p-`&)DgK+d0~dBL#*IG-NtFeL#JC#j1cyLtN+CXiuj7hD6Cc2b
zGM*_$Ha3}i=iYPfmz(L=_xmS+Qye<TAZx>NkwadfGLm!Yjb%9Wx`UAl5`p}g4s~)a
zkZrd5HVW+YR6JL)0~?N+D+yT5juF>*yOBC%x`-Z?K-t%!x}8l1D!!A0F*`Ls3goyi
zV{Pi+rj<PDDZ#!OZgYB)LK@8nf3;9AiFG(^xBAp&Jfy$=k4(xmT~DCkFBc`yxq1oI
zbE2bgYGaR+DON{br~9YS)r)3vpsux9v}krYF+Lo@<ujQt17RMDah;XNESPi03y8N=
zE;AY#$fCmNE)A%n#;S-qHV84pmvk7Y`vLpDT7O-j=&u;&zYvTPX@=8Sda=nH*cI5q
RHscN}i+Pu4pZ5$7egHIAR>lAT

literal 0
HcmV?d00001

diff --git a/out/production/Server/PhoneNumberData.class b/out/production/Server/PhoneNumberData.class
new file mode 100644
index 0000000000000000000000000000000000000000..f4c8fa02c7241503b802ead00ac23d274b9aad96
GIT binary patch
literal 564
zcmZWm%}&BV7@UQ6YfI%%M6cce6S=G5qT$r235NTE4J^Udl)`gqqA~H{1NczJ*@8eI
zO~39pJDr*R_UHHO8^9$_J>-ygVEM2i1<Dh(Q0=LTM(z8-Bpjv!@>)ka?Fi%>&Ay8R
zxDGrY1^5D`hjAQ*ck|~#nB1yV2^3y7h(I;i==IV>N24o&<HkPP><d^o@l#06K>tfV
zs=<^<HHe35+E<A-{R*_wv7QN3f}IF7D2~E(3l*p}n){aI&31TRFP<mEu&a%0ZA-$O
z?ZO-dXB<F|qZ52N0@gg&HV#>f?7G}F`(Eo4qILcO=Z#$sCDtOjfW^m#3yCtj`jU+b
zs_gh*rYfj*gxX58&9CvZTkmjQxme1{40JOYe@R%$aK`IE9kNXzxf8}*Jjk*cYZFAS
MgUEG|dggfY2UFx@`2YX_

literal 0
HcmV?d00001

diff --git a/out/production/Server/PhoneNumberDataTest.class b/out/production/Server/PhoneNumberDataTest.class
new file mode 100644
index 0000000000000000000000000000000000000000..54940ddbace53f06c35b46ae8f68b53deb501464
GIT binary patch
literal 985
zcmZuvYi|-k6g^Xr$Fha8JW4BC)M|OOT^2<|j7j6;(^`#fNc=d^4Gf{XxGcuMWumRo
z#2?^~GTwo$tO^@u?%aFl+;h*|pTEBS0Pq+M1#1XJ5ms>x5r&Ns|G@Pzw+H&`-pJ~E
z43Q_o7T!~aP`T2LBF2z<Gjwe0cy`{i+~?fmF(?d5z4f47ZyODxr63Ab0<JUU%H|UC
z#B+r`=v2BgBc);kX@=y$@&bSi*>dIoJ27PDH5!eFkM0}Irh**uQEaLxV2h#TxC4DO
zBcilUglD-rp9uYEI<;I+IQEo5<@3Xf_cK1G<6e;1qSsEKtnaCGW4Jyq+%lR*+b|k&
zqJBfgP3$lvCQBh0w7_-0Q`zS&6}P1l$?0ExMzPC~2{bO1Jhi5zc=(xfW|7RMxKjC)
z_r~PWOsCJsUG55b_MKsGD5#&DxdN+0uQsvI7}EbnDH5|jPUwX#3P*U~BUu=>-p*`K
zoLgNn6;$HLwjGcA0v65HB1_T)r<^!5w{N`^l4)TDnL{}UDB%u`ocx98PeTWWyJYFK
zGwG>bf_)-m4fkl3VVSl^tLocjROkd6p9p2i%M$_%(_Z+F=sPWbiG*3ZK=PHQ9q%7}
zMRtjoCoCWig}xLL&<J%C>vR0-0s{+t1xZv<qnato-^UKs(x~DASs@$}isYu#4tn4#
zCPRwJ_I3kIwCyh_)@q+oyg*6vlI99lY2u_&R~ee=EXkCcv&t{<{;=BiSp^v|)T!ng
FjNiju$vFT3

literal 0
HcmV?d00001

diff --git a/out/production/Server/Server.class b/out/production/Server/Server.class
new file mode 100644
index 0000000000000000000000000000000000000000..9128cd33f3359bfe7bd87c88931384c6a7798a70
GIT binary patch
literal 2082
zcmaJ?+fo}x5ItjrRu;=0j0M<{6ENTyE6&xCh!f1kmLtHi2!uGdMH-_;VprK6k?@kL
z{6+qN_dGzAU6l{WC*>jJ%<f`VKt)xmx%HgsK7G3P?|)zY1t1TV#uaoJNSNqEQlM|w
z+P88I%h}1TZSTs85=hS3j;$UFbWG1|7)S{W2S$!mxw7>3rB`+<bx9-xX${jQkeDvc
zY+OY*dJOcM=tF-Sboszna*v2^iw_K!0zBKzJ@afwm6a#0y+R6u0_KA2D669U?0mDC
z#xSlK7%_1j8G*q|ZV4DojnQxjJ00Q%!4TATb_z2aDU1p9gnnmzWqC?gQ@9~8v}xIj
zHrbc1m$kB$hAo{SrngLFaf>`ym5OZA-@)mb5IJBVh`lgCHs3KZfk}apJ*zJ1c*Rni
zwyJT)cO2ylOhzunE=EvsCk;#y<TScPOIbyy*@}2cV+MB&yldhvW(9iBQV}@9*mk6f
z*%Rs1T@oBSD5P;4Ii0Wf1g=Mpoiow-exIjtU)EZx&6y8Pe1wnb3Ez#MY0xM*qQ+17
z@_jteFMleKIeWRyMrW!ZFfs4@_Ku_T;>cgJszz;8gA}Qn?MGQM@R>mOLXfd1mQ!s=
zFO4~TuAlfq;PFM)-ze@JyM?xca}H_DM<y0@opc7$F|ZWVVR3EgSFI4+b##^<n|KnK
zRvNA^wRoRu<$ifinPHhxnFdxUvQU|<par)o$!f`V<Z5egTYBr(c7r<uCAVTVHZ0H9
z>u9sfK2r!eZHpqFb5@ia%b&n#n`v9Xq%<soh*IrL8^=tKu;b+$BY<Z~KT>3W_(n|h
z3{R&|AXN(ErFo+1dMqwcq>p~Atx&+R`>_Mw=`OQ5)K{!#L__*b0*IY1yDhIGmu<~j
zSNP67tz@>MN3N@U<yp-YscLT3?@eMSjT&qNySj?&R9+zZpe}7^->u7B*h9j?US?Br
zy#s+iB5}nHL(q^mf1>2N^;R=dR=m!`ur6L)KWNHJ%wNRpPel{kikw`q8jZ58B>N{D
z?D%|8HenvKx?o(#VON*cd{&U?B3Ir*!}5LU8)&jaU5NU!U<`NyH~-(10th3=EtL3?
z(LbhFe;>G7<zkm}gS)@qIfi%*V{7afS6BXoIWTa9Aw7;p<2XmLdiMx7SGhg=3U344
zdX3v#vqzXd#=U&vHSX)h2gmp%->EO>1B<z>*-RqSd5nkoWF~op`9t*Q6Es|=O(t=K
z;^E05-I~H4npi{!*67kx=!Tv`0{SDSYqtwGU}6$IwCrQ=?Z*QQVhKZd&eLykjp`X8
z#yC+j@Gy#fjNv!ldPbz@#9G2MzTzyw{}{?xXZSV#zs3fVykTM!-|%#b;}#J+G&OjE
z?>Oq&_xOQ+c0=Ju{6q>Z?oOfOgii4TUJ`~T^MtM^qLslW#NEYzcxju)30~I$Rye<c
WDkR4g_g?bffWuXqGZ#O@N9I37nIqZ&

literal 0
HcmV?d00001

diff --git a/src/ClientHandler.java b/src/ClientHandler.java
new file mode 100644
index 0000000..ae9e381
--- /dev/null
+++ b/src/ClientHandler.java
@@ -0,0 +1,60 @@
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOError;
+import java.io.IOException;
+import java.net.Socket;
+import java.sql.*;
+
+public class ClientHandler extends Thread{
+    final Socket socket;
+    final DataInputStream input;
+    final DataOutputStream output;
+    DBConn dbc = DBConn.getDBConn();
+    Connection con = dbc.getConnection();
+
+    public ClientHandler(Socket socket, DataInputStream input, DataOutputStream output) {
+        this.socket = socket;
+        this.input = input;
+        this.output = output;
+    }
+
+    @Override
+    public void run() {
+        while(true) {
+            try {
+                output.writeUTF("");
+                String received = input.readUTF();
+                if (received.equals("Done") || this.con.isClosed()) {
+                    this.socket.close();
+                    System.out.println("Connection terminated");
+                    break;
+                }
+                System.out.println(received);
+                PhoneNumberData pnd = new PhoneNumberData(received);
+                String sql = "SELECT * FROM contacts WHERE phoneNumber='" + pnd.getPhoneNumber() + "'";
+                Statement stmt = con.createStatement();
+                ResultSet rs = stmt.executeQuery(sql);
+                while (rs.next()) {
+                    if (rs.getString(5).equals(pnd.getPhoneNumber())) {
+                        output.writeUTF("OCUPAT");
+                        break;
+                    }
+                }
+                if(!rs.isFirst()) {
+                    output.writeUTF("DISPONIBIL");
+                }
+            }
+            catch (IOException | SQLException i) {
+                System.out.println(i);
+                break;
+            }
+        }
+        try{
+            this.input.close();
+            this.output.close();
+        }
+        catch (IOException i){
+            System.out.println(i);
+        }
+    }
+}
diff --git a/src/DBConn.java b/src/DBConn.java
new file mode 100644
index 0000000..20f3275
--- /dev/null
+++ b/src/DBConn.java
@@ -0,0 +1,26 @@
+import java.sql.Connection;
+import java.sql.DriverManager;
+
+public class DBConn {
+    private Connection con;
+    private static DBConn dbc;
+    private DBConn() {
+        try {
+            Class.forName("com.mysql.jdbc.Driver");
+            con = DriverManager.getConnection("jdbc:mysql://localhost:3306/contactdb","root", "");
+        } catch (Exception e) {
+            System.out.println(e);
+        }
+    }
+
+    public static DBConn getDBConn() {
+        if(dbc == null) {
+            dbc = new DBConn();
+        }
+        return dbc;
+    }
+
+    public Connection getConnection() {
+        return con;
+    }
+}
\ No newline at end of file
diff --git a/src/Main.java b/src/Main.java
new file mode 100644
index 0000000..38d8f1a
--- /dev/null
+++ b/src/Main.java
@@ -0,0 +1,7 @@
+import java.io.IOException;
+
+public class Main {
+    public static void main(String[] args) throws IOException {
+        Server server = new Server(5000);
+    }
+}
diff --git a/src/PhoneNumberData.java b/src/PhoneNumberData.java
new file mode 100644
index 0000000..0b13829
--- /dev/null
+++ b/src/PhoneNumberData.java
@@ -0,0 +1,15 @@
+public class PhoneNumberData {
+    String phoneNumber;
+
+    public PhoneNumberData(String phoneNumber) {
+        this.phoneNumber = phoneNumber;
+    }
+
+    public String getPhoneNumber() {
+        return phoneNumber;
+    }
+
+    public void setPhoneNumber(String phoneNumber) {
+        this.phoneNumber = phoneNumber;
+    }
+}
diff --git a/src/PhoneNumberDataTest.java b/src/PhoneNumberDataTest.java
new file mode 100644
index 0000000..579b8e1
--- /dev/null
+++ b/src/PhoneNumberDataTest.java
@@ -0,0 +1,22 @@
+import org.junit.jupiter.api.Assertions;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class PhoneNumberDataTest {
+
+    @org.junit.jupiter.api.Test
+    void getPhoneNumber() {
+        PhoneNumberData pnd = new PhoneNumberData("0749091217");
+        String expected = pnd.getPhoneNumber();
+        String actual = "0722683155";
+        Assertions.assertEquals(expected, actual);
+    }
+
+    @org.junit.jupiter.api.Test
+    void setPhoneNumber() {
+        PhoneNumberData pnd = new PhoneNumberData("0749091217");
+        pnd.phoneNumber = "0771519112";
+        pnd.setPhoneNumber(pnd.phoneNumber);
+        Assertions.assertEquals(pnd.getPhoneNumber(), pnd.phoneNumber);
+    }
+}
\ No newline at end of file
diff --git a/src/Server.java b/src/Server.java
new file mode 100644
index 0000000..d77bcfe
--- /dev/null
+++ b/src/Server.java
@@ -0,0 +1,31 @@
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.net.ServerSocket;
+import java.net.Socket;
+
+public class Server {
+    public Server(int port) throws IOException {
+        ServerSocket serverSocket = new ServerSocket(port);
+        System.out.println("Contacts App");
+        System.out.println("Server started");
+        System.out.println("Waiting for a client");
+        while (true) {
+            Socket socket = null;
+            try {
+                socket = serverSocket.accept();
+                System.out.println("A new client is connected: " + socket);
+
+                DataInputStream inputStream = new DataInputStream(socket.getInputStream());
+                DataOutputStream outputStream = new DataOutputStream(socket.getOutputStream());
+                System.out.println("Assigning new thread for this client");
+                ClientHandler clientHandler = new ClientHandler(socket, inputStream, outputStream);
+                clientHandler.start();
+            }
+            catch (IOException i) {
+                socket.close();
+                System.out.println(i);
+            }
+        }
+    }
+}