import java.awt.*;
import java.awt.event.*;
class Mywindow extends Frame implements ActionListener
{
 Label  luser,lpass,lmsg;
 TextField tuser,tpass;
 Button bok,bcancel;
 Mywindow()
{
 luser=new Label("username");
 lpass=new Label("password");
 lmsg=new Label(" ");
 tuser=new TextField();
 tpass=new TextField();
 bok=new Button("ok");
 bcancel= new Button("cancel");
 luser.setBounds(25,100,70,25);
 lpass.setBounds(120,180,180,25);
 tuser.setBounds(90,310,200,25);
 tpass.setBounds(120,100,180,25);
 lmsg.setBounds(90,310,200,25);
 add(luser);
 add(lpass);
 add(tuser);
 add(tpass);
 add(lmsg);
 bok.setBounds(60,280,80,30);
 bcancel.setBounds(200,280,80,30);
 bok.addActionListener(this);
 bcancel.addActionListener(this);
 add(bok);
 add(bcancel);
 setSize(400,350);
 setLayout(null);
 setVisible(true);
}
public void actionPerformed(ActionEvent e)
{
 String s1=tuser.getText();
 String s2=tpass.getText();
 String command=(( Button) e.getSource()).getActionCommand();
 if(command.equals("ok"))
 {
  if(s1.equals("awt")&&s2.equals("java"))
  {
    luser.setVisible(false);
    lpass.setVisible(false);
    tuser.setVisible(false);
    tpass.setVisible(false);
    bcancel.setBounds(160,175,80,30);
    lmsg.setForeground(Color.green);
    lmsg.setText("succesfull login");
  }
 else
 {
   lmsg.setForeground(Color.red);
   lmsg.setText("invalid user name and password");
  }
}
 else
 {
   System.exit(0);
 }
}
public static void main(String[] args){
 Mywindow mw=new Mywindow();
}
}