Putting frame with buttons into a thread

Question

please help!!!
i've got a thread:
package aJile;
import java.io.*;
import java.net.*;
public class SocketHandler extends Thread
  private Socket socket;               // Socket used for messages 
  private int socketNr;
  private byte[] inbuf;
  private InputStream in;
  private OutputStream out;
  public SocketHandler(Socket socket)
    this.socket = socket; 
  public void send(String str) throws IOException {
       out.write(str.getBytes(), 0, str.length());
       out.flush();              
  public String receive() throws IOException {
       int numBytes = in.read(inbuf);
      String str = new String(inbuf, 0, numBytes);
      return str;
  public String switchOn() throws IOException {
       send("1");
       String state = receive();
       return state;
  public void run()
    try {
      // set up the input and output streams
      in  = socket.getInputStream();
      out = socket.getOutputStream();
      inbuf = new byte[128];
      receive();
     // System.out.println(switchOn());     
      in.close();
      out.close();
      socket.close();
      System.out.println("closing");
    catch (Exception e)
      System.out.println("Caught exception "+ e);
}and i want to add a frame with buttons to this thread. that everytime tread starts, this frame would appear. and that methods of the thread would be called with a button press. How to join them?
here is a frame:
package buttons;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Frame3 extends JFrame implements ActionListener
     JPanel pane = new JPanel(); 
     Icon lightIcon = new ImageIcon("light.gif");
     Icon darkIcon = new ImageIcon("dark.gif");
     JButton pressme = new JButton("Press Me");
     JButton ironButton = new JButton("Iron",lightIcon);
     JButton lampButton = new JButton("Lamp",lightIcon);
     JButton ovenButton = new JButton("Oven",lightIcon);
     public Frame3()  
          super("Event Handler Demo"); setBounds(100,100,300,200);
          setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          Container con = this.getContentPane(); // inherit main frame
          con.add(pane);
          pressme.setMnemonic('P');
          pressme.addActionListener(this);   // register button listener
          ironButton.addActionListener(this);
          lampButton.addActionListener(this);
          ovenButton.addActionListener(this);
          pane.add(ironButton);
          pane.add(lampButton);
          pane.add(ovenButton);
          pane.add(pressme);
  public void actionPerformed(ActionEvent event)
    Object source = event.getSource();
    if (source == pressme){     
      JOptionPane.showMessageDialog(null,"Hello!","Message Dialog",
      JOptionPane.PLAIN_MESSAGE);
    if (source == ironButton){
         if (ironButton.getIcon() == lightIcon){
              ironButton.setIcon(darkIcon);               
         else ironButton.setIcon(lightIcon);
    if (source == lampButton){
         if (lampButton.getIcon() == lightIcon)
              lampButton.setIcon(darkIcon);
         else lampButton.setIcon(lightIcon);
    if (source == ovenButton){
         if (ovenButton.getIcon() == lightIcon)
              ovenButton.setIcon(darkIcon);
         else ovenButton.setIcon(lightIcon);
  public static void main(String[] args){
       Frame3 app = new Frame3();
       app.setVisible(true);
}thank you

Answer 1

could you tell me how to avoid exceptions?
what i want to to is to call a method wich simply sends a string and gets a string back.
public String switchOn() throws IOException {
       send("1");
       String state = receive();
       return state;
  }but when i call this method in actionPerformed() i get exceptios and my socket closes. It sends the string though, but after this program crashes. is there anything special to do if i want to use this Frame3 in order to communicate with a client by pressing buttons?