small bit of code . actionlistener not working

Hi, it is to do with scope. You declare and initialise your button variables within one method and they can not be seen by the other.

Try this.

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

/**

* Sample application using Frame.

*

* @author

* @version 1.00 07/02/05

*/

public class InvoiceFrame extends JFrame implements ActionListener

{

private JButton bNew;

private JButton bLoad;

private JTextArea taDisplay;

/**

* The constructor.

*/

public InvoiceFrame()

{

bNew = new JButton("New Invoice");

bLoad = new JButton("Load Invoice");

bNew.addActionListener(this);

bLoad.addActionListener(this);

JTextArea taDisplay = new JTextArea(10,10);

JPanel center = new JPanel();

JPanel south = new JPanel();

Container c = getContentPane();

c.setLayout(new BorderLayout());

c.add(center, BorderLayout.CENTER);

c.add(south, BorderLayout.SOUTH);

center.add(taDisplay);

south.add(bLoad);

south.add(bNew);

this.setSize(400,400);

this.setVisible(true);

this.setTitle("Invoice Mate");

}

public void actionPerformed(ActionEvent ae)

{

if ( ae.getSource() == bNew )

{

taDisplay.append("blah");

}

}

}

Notice where I Declared the variables?

Cheers

kikemellya at 2007-7-9 0:00:27 >