**Peek-A-Boo** import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.Timer; public class PeekABoo extends JPanel implements KeyListener, ActionListener { public static int WIDTH=1200; public static int HEIGHT=600; private Font titleFont, bigFont; private int x,y; private Timer timer1, timer2; private char ch; private String message; public PeekABoo() { //initialize variables here... titleFont = new Font("Roman", Font.BOLD, 18); bigFont = new Font("Helvetica", Font.PLAIN, 72); timer1 = new Timer(1000, this); //1000=1 seconds timer2 = new Timer(2000, this); //1000=1 seconds timer1.start(); timer2.start(); int r = (int)(26*Math.random()); ch = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".charAt(r); message = "Next Character is "+ch; } public static void main(String[] args) { PeekABoo app= new PeekABoo(); JFrame window = new JFrame("Timer Example"); window.setSize(WIDTH, HEIGHT); window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); window.getContentPane().add(app); window.addKeyListener(app); //window.pack(); window.setVisible(true); } public void paintComponent(Graphics g){ super.paintComponent(g); g.setColor(Color.WHITE); g.fillRect(0, 0, getWidth(),getHeight()); g.setColor(Color.BLUE); g.setFont(titleFont); g.drawString("Peek A Boo", 20, 20); g.setColor(Color.BLACK); g.setFont(bigFont); g.drawString(message, 30, HEIGHT/2); g.fillRect(x, y, 10, 10); } // These 3 methods need to be declares to implement the KeyListener Interface @Override public void keyTyped(KeyEvent e) {} @Override public void keyPressed(KeyEvent e) { char guess = e.getKeyChar(); String s = ""+guess; guess = s.toUpperCase().charAt(0); if (guess == ch) // right message="Thats right"; else { int r = (int)(26*Math.random()); ch = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".charAt(r); message = "No, try Again. The new Letter is "+ch; timer1.restart(); } repaint(); } @Override public void keyReleased(KeyEvent e) {} @Override public void actionPerformed(ActionEvent e) { if (e.getSource()==timer1){ message = "Now type that Letter"; timer1.stop(); timer2.start(); } else { timer2.stop(); int r = (int)(26*Math.random()); ch = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".charAt(r); message = "try Again. The new Letter is "+ch; timer1.restart();; } repaint(); } }