java_键盘事件

package org.du.win;

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import javax.swing.JFrame;
import javax.swing.JTextField;

class Focus implements FocusListener {

    public void focusGained(FocusEvent e) {
        // TODO Auto-generated method stub
        JTextField jf = (JTextField) e.getSource();
        jf.setText(Thread.currentThread().getStackTrace()[1].getMethodName());
        System.out.println(Thread.currentThread().getStackTrace()[1].getMethodName());
    }

    public void focusLost(FocusEvent e) {
        // TODO Auto-generated method stub
        JTextField jf = (JTextField) e.getSource();
        jf.setText(Thread.currentThread().getStackTrace()[1].getMethodName());
        System.out.println(Thread.currentThread().getStackTrace()[1].getMethodName());
    }
    
}

class Listener extends KeyAdapter {//implements KeyListener{
    //1.输入汉字，触发type；不可见按键，触发press。
    public void keyTyped(KeyEvent e) {
        // TODO Auto-generated method stub
        JTextField jf = (JTextField) e.getSource();
        //jf.setText(Thread.currentThread().getStackTrace()[1].getMethodName());        
        System.out.println(Thread.currentThread().getStackTrace()[1].getMethodName() + " " + e.getKeyChar()  + " " + e.getKeyCode());
    }

//    public void keyPressed(KeyEvent e) {
//        // TODO Auto-generated method stub
//        JTextField jf = (JTextField) e.getSource();
//        //jf.setText(Thread.currentThread().getStackTrace()[1].getMethodName());        
//        System.out.println(Thread.currentThread().getStackTrace()[1].getMethodName() + " " + e.getKeyChar()  + " " + e.getKeyCode());
//    }

//    public void keyReleased(KeyEvent e) {
//        // TODO Auto-generated method stub
//        JTextField jf = (JTextField) e.getSource();
//        //jf.setText(Thread.currentThread().getStackTrace()[1].getMethodName());        
//        System.out.println(Thread.currentThread().getStackTrace()[1].getMethodName());
//    }
    
}

public class Key {

    JFrame jf = new JFrame("KeyBoard");
    Container ct = jf.getContentPane();
    
    public void play() {
        jf.setSize(800, 200);
        jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        jf.setVisible(true);
    }
    
    public void text(String str) {
        JTextField text = new JTextField("Inited", 20);
        //1.focus和key单独注册和接收。
        //text.addFocusListener(new Focus());
        text.addKeyListener(new Listener());
        text.setEditable(true);
        ct.add(text, str);
    }
    
    public static void main(String[] args) {
        
        Key key = new Key();
        key.text(BorderLayout.EAST);
        key.text(BorderLayout.WEST);
        key.text(BorderLayout.SOUTH);
        key.text(BorderLayout.NORTH);
        key.text(BorderLayout.CENTER);
        key.play();
    }

}