Catched some Exceptions and fixed a network error

.gitignore

@@ -0,0 +1,62 @@
+# ---> Java
+*.class
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+# ---> JetBrains
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio
+
+*.iml
+
+## Directory-based project format:
+.idea/
+# if you remove the above rule, at least ignore the following:
+
+# User-specific stuff:
+# .idea/workspace.xml
+# .idea/tasks.xml
+# .idea/dictionaries
+
+# Sensitive or high-churn files:
+# .idea/dataSources.ids
+# .idea/dataSources.xml
+# .idea/sqlDataSources.xml
+# .idea/dynamic.xml
+# .idea/uiDesigner.xml
+
+# Gradle:
+# .idea/gradle.xml
+# .idea/libraries
+
+# Mongo Explorer plugin:
+# .idea/mongoSettings.xml
+
+## File-based project format:
+*.ipr
+*.iws
+
+## Plugin-specific files:
+
+# IntelliJ
+/out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+

Online-Chat-Dev.iml

@@ -1,12 +0,0 @@
-<?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" />
-  </component>
-</module>
-

src/com/vertsys/Client.java

@@ -4,14 +4,19 @@ import java.io.BufferedReader;
 import java.io.DataOutputStream;
 import java.io.IOException;
 import java.io.InputStreamReader;
+import java.net.InetAddress;
 import java.net.Socket;
+import java.net.UnknownHostException;
 import java.util.Random;
 
+import static com.vertsys.Server.DEBUG_MODE;
+
 public class Client {
 
     protected static Socket sock;
     private static String username;
     private static BufferedReader ConsoleIn;
+    private static final boolean DEBUG_MODE = true;
 
     public static void main(String[] args) {
 	    init();
@@ -26,22 +31,33 @@ public class Client {
     }
 
     public static void init(){
-        String hostname = "localhost";
+        String hostname = null;
+        try {
+            hostname = InetAddress.getLocalHost().getHostAddress();
+            if(DEBUG_MODE)
+                System.out.println("Host-IP: " + hostname);
+        } catch (UnknownHostException e) {
+            e.printStackTrace();
+        }
         int port = 42424;
 
         // Falls die Vergabe eines Benutzernamen fehlschlägt --> "test" + Zufallszahl
         Random rand = new Random();
-        username = "test" + Integer.toString(rand.nextInt(4));
+        username = "test" + Integer.toString(rand.nextInt());
         try  {
             ConsoleIn = new BufferedReader(new InputStreamReader(System.in));
             System.out.print("Your Username: ");
             String user = ConsoleIn.readLine();
-            if (user != "")
+            if (!user.isEmpty())
                 username = user;
             System.out.print("Enter Server hostname: ");
-            hostname = ConsoleIn.readLine();
+            String host = ConsoleIn.readLine();
+            if(!host.isEmpty())
+                hostname = host;
             System.out.print("Enter port number: ");
-            port = Integer.parseInt(ConsoleIn.readLine());
+            String portNum = ConsoleIn.readLine();
+            if(!portNum.isEmpty())
+                port = Integer.parseInt(portNum);
         }catch (IOException e){
             e.printStackTrace();
         }

src/com/vertsys/ClientThread.java

@@ -1,7 +1,5 @@
 package com.vertsys;
 
-//import static com.vertsys.Server.sock;
-
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStreamReader;

src/com/vertsys/Server.java

@@ -8,9 +8,10 @@ import java.util.ArrayList;
 
 public class Server {
     protected static ServerSocket sock;
+
     protected static ArrayList<String> messages = new ArrayList<>();
     protected static ArrayList<Socket> clients = new ArrayList<>();
-//    protected static ArrayList<String> messages = new ArrayList<>();
+
     protected static int port;
 
     protected static boolean DEBUG_MODE = true;