made packages for server and client in src folder

src/Server/.gitignore

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+
+# Created by https://www.gitignore.io/api/java,gradle,eclipse,intellij
+# Edit at https://www.gitignore.io/?templates=java,gradle,eclipse,intellij
+
+### Eclipse ###
+
+.metadata
+bin/
+tmp/
+*.tmp
+*.bak
+*.swp
+*~.nib
+local.properties
+.settings/
+.loadpath
+.recommenders
+
+# External tool builders
+.externalToolBuilders/
+
+# Locally stored "Eclipse launch configurations"
+*.launch
+
+# PyDev specific (Python IDE for Eclipse)
+*.pydevproject
+
+# CDT-specific (C/C++ Development Tooling)
+.cproject
+
+# CDT- autotools
+.autotools
+
+# Java annotation processor (APT)
+.factorypath
+
+# PDT-specific (PHP Development Tools)
+.buildpath
+
+# sbteclipse plugin
+.target
+
+# Tern plugin
+.tern-project
+
+# TeXlipse plugin
+.texlipse
+
+# STS (Spring Tool Suite)
+.springBeans
+
+# Code Recommenders
+.recommenders/
+
+# Annotation Processing
+.apt_generated/
+
+# Scala IDE specific (Scala & Java development for Eclipse)
+.cache-main
+.scala_dependencies
+.worksheet
+
+### Eclipse Patch ###
+# Eclipse Core
+.project
+
+# JDT-specific (Eclipse Java Development Tools)
+.classpath
+
+# Annotation Processing
+.apt_generated
+
+.sts4-cache/
+
+### Intellij ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and WebStorm
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
+
+### Intellij Patch ###
+# Comment Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-215987721
+
+# *.iml
+# modules.xml
+# .idea/misc.xml
+# *.ipr
+
+# Sonarlint plugin
+.idea/sonarlint
+
+### Java ###
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+### Gradle ###
+.gradle
+build/
+
+# Ignore Gradle GUI config
+gradle-app.setting
+
+# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
+!gradle-wrapper.jar
+
+# Cache of project
+.gradletasknamecache
+
+# # Work around https://youtrack.jetbrains.com/issue/IDEA-116898
+# gradle/wrapper/gradle-wrapper.properties
+
+### Gradle Patch ###
+**/build/
+
+# End of https://www.gitignore.io/api/java,gradle,eclipse,intellij

src/Server/build.gradle

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+buildscript {
+    repositories {
+        mavenCentral()
+    }
+    dependencies {
+        classpath("org.springframework.boot:spring-boot-gradle-plugin:2.0.5.RELEASE")
+    }
+}
+
+apply plugin: 'java'
+apply plugin: 'eclipse'
+apply plugin: 'idea'
+apply plugin: 'org.springframework.boot'
+apply plugin: 'io.spring.dependency-management'
+apply plugin: 'jacoco'
+
+bootJar {
+    baseName = 'gs-rest-service'
+    version =  '0.1.0'
+}
+
+repositories {
+    mavenCentral()
+}
+
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
+
+dependencies {
+    compile("org.springframework.boot:spring-boot-starter-web")
+    testCompile('org.springframework.boot:spring-boot-starter-test')
+}

src/Server/src/main/java/hello/Application.java

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+package hello;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+}

src/Server/src/main/java/hello/Greeting.java

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+package hello;
+
+public class Greeting {
+
+    private final long id;
+    private final String content;
+
+    public Greeting(long id, String content) {
+        this.id = id;
+        this.content = content;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public String getContent() {
+        return content;
+    }
+}

src/Server/src/main/java/hello/GreetingController.java

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+package hello;
+
+import java.util.concurrent.atomic.AtomicLong;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class GreetingController {
+
+    private static final String template = "Hello, %s!";
+    private final AtomicLong counter = new AtomicLong();
+
+    @RequestMapping("/greeting")
+    public Greeting greeting(@RequestParam(value="name", defaultValue="World") String name) {
+        return new Greeting(counter.incrementAndGet(),
+                            String.format(template, name));
+    }
+}

src/Server/src/test/java/ApplicationTest.java

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+import org.junit.Test;
+public class ApplicationTest {
+    @Test
+    public void main() {
+    }
+}

src/Server/src/test/java/GreetingControllerTest.java

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+import hello.Greeting;
+import hello.GreetingController;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+
+public class GreetingControllerTest {
+    @Test
+    void nullTest() {
+        GreetingController controller = new GreetingController();
+        assertThat(controller).isNotNull();
+    }
+}
+

src/Server/src/test/java/GreetingTest.java

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+import hello.Greeting;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+
+public class GreetingTest {
+    @Test
+    void testGets() {
+        Greeting greeting = new Greeting(1, "hello");
+        long id = greeting.getId();
+        String content = greeting.getContent();
+        assertThat(id).isEqualTo(1);
+        assertThat(content).isEqualTo(content);
+    }
+}