Problems getting a server / client opening Streams between themselves

Question

I've kept working on my chat program, but now, after the client connects to the server, it won't open the ObjectInputStream and ObjectOutputStream I try to open...
Here is the current coding of my program..
NetTalkServer.java
package Dalzhim.NetTalk;
import java.io.*;
import java.net.*;
import java.awt.*;
import java.util.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
public class NetTalkServer extends Thread implements WindowListener
     JFrame window;
     Container mainPane;
     ServerSocket server = null;
     boolean running = true;
     boolean wait;
     static Vector Users,UsersNames;
     static JList dataList;
     ObjectOutputStream oos;
     ObjectInputStream ois;
     static NetTalkInput[] connections;
     int connectionsAmount = 0;
     public static void main(String args[])
          NetTalkServer nettalkserver = new NetTalkServer();
     public NetTalkServer()
          window = new JFrame("NetTalkServer");
          mainPane = window.getContentPane();
          Users = new Vector();
          UsersNames = new Vector();
          dataList = new JList(UsersNames);
          JScrollPane scroll = new JScrollPane(dataList);
          Dimension dimension = new Dimension(190,90);
          mainPane.add(scroll);
          scroll.setPreferredSize(dimension);
          UsersNames.clear();
          Image icon = Toolkit.getDefaultToolkit().getImage(getClass().getResource("NetTalkServer.jpg"));
          window.setIconImage(icon);
          connections = new NetTalkInput[255];
          window.addWindowListener(this);
          window.pack();
          window.setVisible(true);
          try
               server = new ServerSocket(37148);
               this.start();
          catch(IOException e)
               System.out.println("Error listening on socket 37148");
     public void run()
          Socket clientsocket = null;
          while(running)
               try
                    connections[connectionsAmount] = new NetTalkInput(server.accept(),connectionsAmount,"Server");
                    connectionsAmount += 1;
                    connections[connectionsAmount - 1].sendData(new NetTalkData("Login"));
               catch(IOException e)
                    System.out.println("Connection attempt failed");
     public static void readInput(int connection)
          NetTalkData data = connections[connection].getInput();
          if(data.getDataType().equals("NetTalkUser"))
               NetTalkUser user = data.getDataUser();
               Users.add(user);
               UsersNames.add(user.getUserName());
               dataList.setListData(UsersNames);
     public void windowActivated(WindowEvent e)
     public void windowClosed(WindowEvent e)
     public void windowClosing(WindowEvent e)
          this.stop();
          try
               server.close();
          catch(IOException f)
          System.exit(0);
     public void windowDeactivated(WindowEvent e)
     public void windowDeiconified(WindowEvent e)
     public void windowIconified(WindowEvent e)
     public void windowOpened(WindowEvent e)
NetTalkConnect.java
package Dalzhim.NetTalk;
import java.io.*;
import java.net.*;
import java.awt.*;
import java.util.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
public class NetTalkConnect
     JFrame window;
     Container mainPane;
     static JTextField serverIP,loginName;
     JButton connect;
     Socket socket;
     static NetTalkInput connection;
     public static void main(String args[])
          NetTalkConnect connection = new NetTalkConnect();
     public NetTalkConnect()
          window = new JFrame("NetTalk");
          mainPane = window.getContentPane();
          mainPane.setLayout(null);
          serverIP = new JTextField("Server IP",20);
          loginName = new JTextField("Login Name",20);
          connect = new JButton("Connect");
          AL al = new AL();
          serverIP.addActionListener(al);
          loginName.addActionListener(al);
          connect.addActionListener(al);
          serverIP.setBounds(5,5,185,20);
          loginName.setBounds(5,30,185,20);
          connect.setBounds(5,55,185,20);
          mainPane.add(serverIP);
          mainPane.add(loginName);
          mainPane.add(connect);
          Image icon = Toolkit.getDefaultToolkit().getImage(getClass().getResource("NetTalk.jpg"));
          window.setIconImage(icon);
          window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          window.pack();
          window.setVisible(true);
          window.setResizable(false);
          window.setSize(200,105);
          serverIP.requestFocus();
          serverIP.selectAll();
     public static void readInput()
          NetTalkData data = connection.getInput();
          if(data.getDataType().equals("Login"))
               connection.sendData(new NetTalkData(new NetTalkUser(loginName.getText(),connection.getUserID())));
     class AL implements ActionListener
          public void actionPerformed(ActionEvent e)
               if(e.getSource()==serverIP)
                    loginName.requestFocus();
                    loginName.selectAll();
               else if(e.getSource()==loginName)
                    connect.doClick();
               else if(e.getSource()==connect)
                    connection = new NetTalkInput(serverIP.getText(),"Client");
NetTalkInput.java
package Dalzhim.NetTalk;
import java.io.*;
import java.net.*;
import java.awt.*;
import java.util.*;
public class NetTalkInput extends Thread implements Serializable
     Socket userSocket;
     int userID;
     String userName;
     ObjectInputStream ois;
     ObjectOutputStream oos;
     boolean running = true;
     NetTalkUser user;
     NetTalkData data;
     String creator;
     public NetTalkInput(Socket socket,int ID,String main)
          try
               userSocket = socket;
               userID = ID;
               creator = main;
               ois = new ObjectInputStream(userSocket.getInputStream());
               oos = new ObjectOutputStream(userSocket.getOutputStream());
               System.out.println("Connection attempt succeeded");
               this.start();
          catch(IOException e)
     public NetTalkInput(String serverIP, String main)
          try
               userSocket = new Socket(serverIP,37148);
               creator = main;
               ois = new ObjectInputStream(userSocket.getInputStream());
               oos = new ObjectOutputStream(userSocket.getOutputStream());
               this.start();
          catch(IOException e)
               System.out.println("Error connecting to server");
     public void run()
          while(running)
               try
                    data = (NetTalkData)ois.readObject();
                    if(creator.equals("Server"))
                         NetTalkServer.readInput(userID);
                    else if(creator.equals("Client"))
                         NetTalkConnect.readInput();
               catch(IOException e)
               catch(ClassNotFoundException e)
     public void sendData(NetTalkData sentData)
          try
               oos.writeObject(sentData);
          catch(IOException e)
     public NetTalkData getInput()
          return data;
     public int getUserID()
          return this.userID;
NetTalkData.java
package Dalzhim.NetTalk;
import java.io.*;
public class NetTalkData extends Object implements Serializable
     String dataType;
     String dataArgument;
     NetTalkUser dataUser;
     public NetTalkData()
     public NetTalkData(String type)
          dataType = type;
     public NetTalkData(String type, String argument)
          dataType = type;
          dataArgument = argument;
     public NetTalkData(NetTalkUser user)
          dataType = "NetTalkUser";
          dataUser = user;
     public String getDataType()
          return this.dataType;
     public NetTalkUser getDataUser()
          return this.dataUser;
NetTalkUser.java
package Dalzhim.NetTalk;
import java.io.*;
import java.net.*;
public class NetTalkUser extends NetTalkData implements Serializable
     String userName;
     InetAddress userIP;
     int userPort;
     int userID;
     public NetTalkUser(String name)
          userName = name;
     public NetTalkUser(String name,int ID)
          userName = name;
          userID = ID;
     public NetTalkUser(String name,InetAddress IP)
          userName = name;
          userIP = IP;
     public NetTalkUser(String name,InetAddress IP,int Port)
          userName = name;
          userIP = IP;
          userPort = Port;
     public String getUserName()
          return this.userName;
     public InetAddress getUserIP()
          return this.userIP;
     public int getUserPort()
          return this.userPort;
     public boolean equals(Object anObject)
          if(anObject==null)
               return false;
          if (!(anObject instanceof NetTalkUser))
               return false;
          NetTalkUser user = (NetTalkUser)anObject;
          if(!user.getUserName().equals(getUserName()))
               return false;
     return true;
    public int getID()
         return this.userID;
    public void setID(int ID)
         this.userID = ID;
}If you wish to try it by yourself to see exactly the problem I get, just give me your mail adress so I can send out the Java files..
Thanks in advance!

Answer 1

I've put the 5 java source files at those adresses:
http://www.majinnet.com/ss/Java/Chat/NetTalkServer.java
http://www.majinnet.com/ss/Java/Chat/NetTalkConnect.java
http://www.majinnet.com/ss/Java/Chat/NetTalkInput.java
http://www.majinnet.com/ss/Java/Chat/NetTalkData.java
http://www.majinnet.com/ss/Java/Chat/NetTalkUser.java