addingmachinekeyhandler.java

Java程序设计技巧与开发实例附书源代码。

import java.awt.event.*;

public class AddingMachineKeyHandler
    implements KeyListener
{
  private AddingMachine master = null;
  public AddingMachineKeyHandler(AddingMachine _master)
  {
    master = _master;
  }

  public void keyPressed(KeyEvent ke)
  {
    if (ke.getKeyCode() == KeyEvent.VK_ENTER)
    {
      master.handleAdd();
    }
  }

  public void keyReleased(KeyEvent ke)
  {
  /* 空 */}

  public void keyTyped(KeyEvent ke)
  {
  /* 空 */}
}