Please correct this...not getting the resulting label(l4) in the output.

Question

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

class awt3 extends Frame implements ActionListener{

Button b1;
TextField t1,t2;
Label l1,l2,l3,l4;
awt3(){
Button b1=new Button("OK");
Label l1=new Label("Number1");
Label l2=new Label("Number2");
Label l3=new Label("Result: ");
Label l4=new Label(null);

Panel p1=new Panel();
TextField t1=new TextField(10);
TextField t2=new TextField(10);

add(p1);p1.add(l1);p1.add(t1);
p1.add(l2);p1.add(t2);
p1.add(b1);
p1.add(l3);
p1.add(l4);
setSize(200,200);setVisible(true);

b1.addActionListener(this);

addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
});
}

public void actionPerformed(ActionEvent e){
int n1,n2;
if(e.getSource()==b1){
n1=Integer.parseInt(t1.getText());
n2=Integer.parseInt(t2.getText());

if(n1>n2)
l4.setText("n1 is greater");
else if(n1==n2)
l4.setText("n1 equals n2");
else

Answer 1

whats wrong with the code ?

Answer 2

Not getting resulting label(l4) in the output.