Again same problem???

Question

This program executes JTextField and JPasswordField.But the problem is I use Eclipse Platform and It shows error in line 43.The error is:
class must implement the inherited abstract method ActionListener.actionPerformed(ActionEvent)
But I've already implement that.And that's why I can't understand what's the actual problem.I've already faced the problem beforr but couldn't solve the problem although I got the help of the forum.Plz help me now.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class TextFieldTest extends JFrame{
    private JTextField textfield1,textfield2,textfield3;
    private JPasswordField passwordfield;
    public TextFieldTest()
        super("Testing JTextField and JPasswordField");
        Container container=getContentPane();
        container.setLayout(new FlowLayout());
        textfield1=new JTextField(10);
        container.add(textfield1);
        textfield2=new JTextField("Enter text here");
        container.add(textfield2);
        textfield3=new JTextField("Uneditable text field",20);
        textfield3.setEditable(false);
        container.add(textfield3);
        passwordfield=new JPasswordField("123456");
        container.add(passwordfield);
        TextFieldHandler handler=new TextFieldHandler();
        textfield1.addActionListener(handler);
        textfield2.addActionListener(handler);
        textfield3.addActionListener(handler);
        passwordfield.addActionListener(handler);
        setSize(325,100);
        setVisible(true);
    public static void main(String[] args) {
        TextFieldTest test=new TextFieldTest();
        test.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    private class TextFieldHandler implements ActionListener
        public void actionPerformed(ActionEvent event)
            String str="";
            if(event.getSource()==textfield1)
                str="textfield1: "+event.getActionCommand();
            else if(event.getSource()==textfield2)
                str="textfield2: "+event.getActionCommand();
            else if(event.getSource()==textfield3)
                str="textfield3: "+event.getActionCommand();
            else if(event.getSource()==passwordfield)
                str="passwordfield: "+new String(passwordfield.getPassword());
            JOptionPane.showMessageDialog(null,str);
}

Answer 1

This code compiles fine for me. I am currently using version 1.5.0_04. Maybe you can hit "refresh" or "rebuild project" in Eclipse?
Good Luck
Lee