updated project to maven project.

WasteInformationServer.iml

@@ -1,18 +1,21 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<module type="JAVA_MODULE" version="4">
-  <component name="NewModuleRootManager" inherit-compiler-output="true">
-    <exclude-output />
+<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_13">
+    <output url="file://$MODULE_DIR$/target/classes" />
+    <output-test url="file://$MODULE_DIR$/target/test-classes" />
     <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="library" name="org.eclipse.paho.client.mqttv3-1.2.1" level="project" />
-    <orderEntry type="library" name="mysql-connector-java-5.1.44-bin" level="project" />
     <orderEntry type="library" name="mysql-connector-java-5.1.44-bin" level="project" />
     <orderEntry type="library" name="org.eclipse.paho.client.mqttv3-1.2.1" level="project" />
-    <orderEntry type="library" name="gson-2.8.6" level="project" />
-    <orderEntry type="library" name="gson-2.8.6-sources" level="project" />
+    <orderEntry type="library" name="Maven: org.eclipse.paho:org.eclipse.paho.client.mqttv3:1.2.2" level="project" />
+    <orderEntry type="library" name="Maven: mysql:mysql-connector-java:8.0.18" level="project" />
+    <orderEntry type="library" name="Maven: com.google.protobuf:protobuf-java:3.6.1" level="project" />
   </component>
 </module>

pom.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <properties>
+        <maven.compiler.release>13</maven.compiler.release>
+    </properties>
+
+
+    <groupId>wasteinformationserver</groupId>
+    <artifactId>Waste Information Server</artifactId>
+    <version>1.0-BETA</version>
+
+
+    <dependencies>
+        <!-- https://mvnrepository.com/artifact/org.eclipse.paho/org.eclipse.paho.client.mqttv3 -->
+        <dependency>
+            <groupId>org.eclipse.paho</groupId>
+            <artifactId>org.eclipse.paho.client.mqttv3</artifactId>
+            <version>1.2.2</version>
+        </dependency>
+
+        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>8.0.18</version>
+        </dependency>
+    </dependencies>
+    
+</project>

src/main/java/com/wasteinformationserver/website/datarequests/DataRequest.java

@@ -1,6 +1,5 @@
 package com.wasteinformationserver.website.datarequests;
 
-import com.google.gson.Gson;
 import com.wasteinformationserver.basicutils.Log;
 import com.wasteinformationserver.db.JDCB;
 import com.wasteinformationserver.website.basicrequest.PostRequest;
@@ -68,7 +67,6 @@ public class DataRequest extends PostRequest {
             case "getAllCities":
 
                 // TODO: 15.11.19 database call to get all data and store it as json.
-                Gson gson = new Gson();
 
                 StringBuilder builder = new StringBuilder();