//
// Simple creation of two buttons which each print their
// own message in the console window.
//
import javax.swing.*;        
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class ButtonExample extends JPanel implements ActionListener{
    private JButton LeftButton, RightButton;

    public ButtonExample(){
        LeftButton = new JButton ("Left Button");
        LeftButton.addActionListener(this);
        add(LeftButton);
        
        RightButton = new JButton ("Right Button");
        RightButton.addActionListener(this);
        add(RightButton);
        
        JLabel x = new JLabel ("Change this.");
        add(x);
    }
 
    /**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
    private static void createAndShowGUI() {
        //Make sure we have nice window decorations.
        JFrame.setDefaultLookAndFeelDecorated(false);

        //Create and set up the window.
        JFrame frame = new JFrame("Button Demo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        // set up content pane
        ButtonExample newContentPane = new ButtonExample(); 
        newContentPane.setOpaque(true);
        newContentPane.setBorder(
              BorderFactory.createEmptyBorder(20,20,20,20)); //T,L,B,R
        frame.setContentPane(newContentPane);

        //Display the window.
        frame.pack();
        frame.setVisible(true);
    }

    public void actionPerformed(ActionEvent e){

           System.out.println("Button pressed.");
    }

    public static void main(String[] args) {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}