import java.applet.*; 
import java.awt.*; 
import java.awt.event.*; 

public class MyApplet extends Applet implements KeyListener 
{ 
  TextField Input; 

  public void init() 
  { 
    Input = new TextField(10); 
    Input.addKeyListener(this); 
    add(Input); 
  } 

  public void keyReleased(KeyEvent ev) 
  { 
    if (ev.getKeyCode() == KeyEvent.VK_ENTER) 
    { 
      Input.setForeground(Color.red); 
    } 
    else if (ev.getKeyCode() == KeyEvent.VK_TAB) 
    { 
      Input.setForeground(Color.green); 
    } 
    else if (ev.getKeyCode() == KeyEvent.VK_CAPS_LOCK) 
    { 
      Input.setForeground(Color.yellow); 
    } 
    else 
    { 
      Input.setForeground(Color.blue); 
    } 
  } 

  public void keyTyped(KeyEvent ev) { } 
  public void keyPressed(KeyEvent ev) { } 
}