keychar.java

一个能响应键盘事件的java程序。按下键盘一个字符

import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
public class keychar extends Applet implements KeyListener
{
  TextField txt=new TextField(8);
  public void init()
  {
	   setBackground(Color.cyan);
	   setForeground(Color.blue);
	   setFont(new Font("Bookman Old Style",Font.BOLD,20));
	   add(txt);
	   txt.addKeyListener(this);
  }
	public void keyPressed(KeyEvent e) 
	{
		char ch=e.getKeyChar();
		txt.setText(""+ch);
		
	}

	public void keyReleased(KeyEvent e) {
		
		
	}

	public void keyTyped(KeyEvent e) {
		// TODO Auto-generated method stub
		
	}

}