Winfocus.java

import javax.swing.*;
import java.awt.event.*;
public class WinFocus extends JFrame implements WindowListener{
    JPanel pnl;
    JLabel lbl;
    JTextField txt;
     public WinFocus() {
        // TODO Auto-generated constructor stub
        pnl=new JPanel();
        lbl=new JLabel("NAME:");
        txt=new JTextField(10);
        pnl.add(lbl);
        pnl.add(txt);
        this.setContentPane(pnl);
        this.setVisible(true);
        addWindowListener(this);
        setSize(getMaximumSize());
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
   
    @Override
    public void windowActivated(WindowEvent arg0) {
        // TODO Auto-generated method stub
       
    }

    @Override
    public void windowClosed(WindowEvent arg0) {
        // TODO Auto-generated method stub
       
    }

    @Override
    public void windowClosing(WindowEvent arg0) {
        // TODO Auto-generated method stub
       
    }

    @Override
    public void windowDeactivated(WindowEvent arg0) {
        // TODO Auto-generated method stub
       
    }

    @Override
    public void windowDeiconified(WindowEvent arg0) {
        // TODO Auto-generated method stub
       
    }

    @Override
    public void windowIconified(WindowEvent arg0) {
        // TODO Auto-generated method stub
       
    }

    @Override
    public void windowOpened(WindowEvent arg0) {
        // TODO Auto-generated method stub
        //new ChildFrame();
       
    }
     public static void main(String[] args) {
          new WinFocus();
       
    }


}