[ Beginner ] Code Errors

[tima]

Hello Everyone,

This is the code of 2 seperate panels :
- the first panel contains 2 buttons + 2 textboxes
- the second panel contains 3 buttons (Erase, Change, and Exit)
When we enter some text in the first textbox , if we click on "change"
the data entered in textbox1 will be sent to textbox2.

I'm trying this code but unfortunately it is not working. Would someone
help me find the errors ? Thanks in advance.

package untitled5;

import java.awt.*;
import java.awt.event.*;


public class Echange extends Frame implements ActionListener {

  Label l1=new Label("text1");
  TextField t1=new TextField(20);
  Label l2=new Label("text2");
  TextField t2=new TextField(20);
  Button ef=new Button("Effacer");
  Button ech=new Button("Echanger");
  Button fin=new Button("Fin");

  public Echange(){

    Panel p1=new Panel();
    Panel p2=new Panel();
    GridLayout g=new GridLayout(2,2);
    FlowLayout f=new FlowLayout(1,3);
    p1.setLayout(g);
    p1.add(l1);
    p1.add(t1);
    p1.add(l2);
    p1.add(t2);
    p2.setLayout(f);
    p2.add(ef);
    p2.add(ech);
    p2.add(fin);
    ef.addActionListener(this);
    ech.addActionListener(this);
    fin.addActionListener(this);
    BorderLayout b=new BorderLayout();
    this.setLayout(b);
    this.add("North",p1);
    this.add("Center",p2);
    pack();
    show();

  addWindowListener(new WindowAdapter(){
     public void windowClosing(WindowEvent e){
        System.exit(0);
          }});
  public void actionPerformed(ActionEvent e){
     if(e.getSource()==ef){
       t1.setText(" ");
       t2.setText(" ");
       }
     else
         if(e.getSource()==ech){
            String s;
            s=t1.getText();
            t1.setText(t2.getText());
            t2.setText(s);
            }
         else if(e.getSource()==fin){
           System.exit(0);
               }
         }

         }

 public static void main(String[] args) {
  new Echange();

      }
    }