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copied!<pre><code>import java.awt.Color; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class ButtonJava3 extends JButton implements ActionListener{ public static final int noOfButtons = 3; private static final Color[] COLORS = { Color.ORANGE, Color.WHITE, Color.GREEN}; private int clicks; private static boolean firstButtonClicked = false; private int colorIndex, index; private static ButtonJava3[] buttons; public static void main ( String[] args ) { JFrame frame = new JFrame ( "ButtonJava (the Hutt)" ); JPanel panel = new JPanel( ); buttons = new ButtonJava3[noOfButtons]; frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE ); for(int i = 0;i < noOfButtons ; i++){ buttons[i] = new ButtonJava3(i); // One button of each color panel.add(buttons[i]); } frame.getContentPane( ).add( panel ); frame.setSize( 300, 300 ); frame.setVisible( true ); } private ButtonJava3(int index){ this.index = index; setBackground( Color.YELLOW ); setText( "Pick Me" ); this.addActionListener( this ); } private void updateButtons( ) { clicks++; for(int i = 0; i< noOfButtons; i++){ buttons[i].updateButton(); // update each button } setText( Integer.toString(clicks) ); } private final void updateButton(){ colorIndex--;; // Go to the next color if(colorIndex < 0){ // if there is no next color colorIndex = noOfButtons-1; // go back to first color }// apply result setBackground(COLORS[colorIndex]); } private final void colorOther(){ for(int i = 0; i < noOfButtons; i++){ if(i != index){ buttons[i].colorIndex = checkColor(colorIndex+(i-index)); } } } private final static int checkColor(int i){ if(i >= noOfButtons){ i -= (noOfButtons); }else if(i < 0){ i = (noOfButtons)+i; } return i; } @Override public void actionPerformed( ActionEvent event ){ if(!firstButtonClicked){ colorIndex = 1; colorOther();firstButtonClicked = true; } updateButtons( ); } } </code></pre>

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