// // 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 PushMe2Button extends JPanel implements ActionListener{ private JButton LeftButton, RightButton; public PushMe2Button(){ LeftButton = new JButton ("Left Button"); LeftButton.setActionCommand("left"); LeftButton.addActionListener(this); add(LeftButton); RightButton = new JButton ("Right Button"); RightButton.setActionCommand("right"); RightButton.addActionListener(this); add(RightButton); } /** * 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 PushMe2Button newContentPane = new PushMe2Button(); 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){ if ("left".equals(e.getActionCommand())) System.out.println("Left button pressed."); else if ("right".equals(e.getActionCommand())) System.out.println("Right 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(); } }); } }