Java SE (Java Platform, Standard Edition)

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class Frame extends JFrame implements ActionListener{
	
	private JButton jbt1;
	
	private JLabel lbl1;
	private JLabel lbl2;
	
	private JTextField jtf1;
	private JTextField jtf2;
	
	private JPanel panel;
	private JPanel panel1;
	private JPanel panel2;
	
	public DriverFrame(){
		jbt1 = new JButton("Add");
		
		lbl1 = new JLabel("Name: ");
		lbl1 = new JLabel("Rank: ");
		
		jtf1 = new JTextField("Enter Name Here");
		jtf2 = new JTextField("Enter Rank Here");
		
		panel = new JPanel();
		panel1 = new JPanel();
		panel2 = new JPanel();

		panel1.setLayout (new FlowLayout(FlowLayout.LEFT, 5, 5));  //inner layout
        panel1.add(lbl1);
        panel1.add(jtf1);
        
		panel2.setLayout (new FlowLayout(FlowLayout.LEFT, 5, 5));  //inner layout
        panel2.add(lbl2);
        panel2.add(jtf2);

        
		panel.add(panel1);  //main layout
		panel.add(panel2);
		panel.setLayout (new BoxLayout(panel, BoxLayout.Y_AXIS));
		add(panel);
		
		setTitle("New");
        setSize(400, 400); // Set the frame size
        setLocationRelativeTo(null); // Center of the screen
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true); // Display the frame
        
	}
	
	
	
	
	public void actionPerformed(ActionEvent e){
		
	}
	
}

The error is

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
    at java.awt.Container.addImpl(Container.java:1045)
    at java.awt.Container.add(Container.java:365)
    at DriverFrame.<init>(DriverFrame.java:40)
    at Main.actionPerformed(Main.java:140)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
    at java.awt.Component.processMouseEvent(Component.java:6216)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
    at java.awt.Component.processEvent(Component.java:5981)
    at java.awt.Container.processEvent(Container.java:2041)
    at java.awt.Component.dispatchEventImpl(Component.java:4583)
    at java.awt.Container.dispatchEventImpl(Container.java:2099)
    at java.awt.Component.dispatchEvent(Component.java:4413)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4556)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4220)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4150)
    at java.awt.Container.dispatchEventImpl(Container.java:2085)
    at java.awt.Window.dispatchEventImpl(Window.java:2475)
    at java.awt.Component.dispatchEvent(Component.java:4413)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

Process completed.

I have actually implemented the main class where there is a button to create an instancce of this class.

if (e.getSource() == jbtNew){
            Frame d = new Frame();

Please help, Thank you.

Edited by: Nickd...... on Feb 23, 2010 1:26 AM