Swing program getting slower

Question

Hi
I have done a simple program.It shows a JCombobox on a panel.JComboBox contained 3 String (Back,Search,GetaAll).I have addeed a addActionListener(this) to the JComboBox)
It works fine at first.When I click Back again and again its going alower and slower.After doing 20 times like this.it remains at constant stage.The CPU Usage increases continiously.and remains 100 finally.At that time my program remains in a perticular page.
My source code is given below.
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ComboBoxEditor;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class ActWithComBox extends JFrame implements ActionListener {
     JPanel jpanel ;
     JLabel label = new JLabel("Wellcom to callBack");
     JLabel label1 = new JLabel("Wellcom to Search");
     JButton button = new JButton("Back");
     JButton button1 = new JButton("Back");
     String[] item = {"Options","Back","Search","Get All"};
     JComboBox jcomboBox = new JComboBox(item);
     public ActWithComBox() {
          super();
          jpanel = new JPanel();
          jbInit();
     private void jbInit() {
          jpanel.removeAll();
          setContentPane(jpanel);
     jpanel.setLayout(null);
          jpanel.setBackground(Color.BLUE);
          jcomboBox.setBounds(150,240,100,30);
          jcomboBox.addActionListener(this);
          jpanel.add(jcomboBox);
          //jpanel.setVisible(true);
          //jcomboBox.setVisible(true);
     public void actionPerformed(ActionEvent e) {
          if(e.getSource() == button){
               jbInit();
               return ;
          }else if(e.getSource() == button1){
               jbInit();
               return;
          jcomboBox = (JComboBox)e.getSource();
          if(jcomboBox.getSelectedItem() == "Back"){
               callBack();
          }else if(jcomboBox.getSelectedItem() == "Search"){
               callSearch();
          }else if(jcomboBox.getSelectedItem() == "Get All"){
               System.out.println("inside Get All");
     private void callSearch() {
          jpanel.removeAll();
          jpanel.setLayout(null);
          jpanel.setBackground(Color.RED);
          label1.setBounds(10,10,200,30);
          label1.setForeground(Color.GREEN);
          button1.setBounds(50,50,100,50);
          button1.addActionListener(this);
          jpanel.add(label1);
          jpanel.add(button1);
          //jpanel.setVisible(true);
     private void callBack() {
          jpanel.removeAll();
          jpanel.setLayout(null);
          jpanel.setBackground(Color.BLACK);
          label.setBounds(10,10,200,30);
          label.setForeground(Color.RED);
          button.setBounds(50,50,100,50);
          button.addActionListener(this);
          jpanel.add(label);
          jpanel.add(button);
          //jpanel.setVisible(true);
     public static void main(String[] b){
          ActWithComBox act = new ActWithComBox();
          act.setSize(300,300);
          act.setVisible(true);
please reply me soon.
Excuse for my english.
Thanks..
Chagulu

Answer 1

Use the [url http://forum.java.sun.com/help.jspa?sec=formatting]Code Formatting Tags when posting source code.
It looks to me like the actionListener is added to you button every time you click the comboBox. So your actionPerformed code executes 1, then 2, then 3, ....then xxx times.