keysevent2.java

GUI事件处理例子

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

public class KeysEvent2 extends Frame {

	static KeysEvent2 frm = new KeysEvent2();
	static TextField txt1, txt2;

	public static void main(String args[]) {
		frm.setTitle("KeyEvent");
		frm.setSize(240, 130);
		frm.setLayout(new FlowLayout());
		txt1 = new TextField(20);
		txt2 = new TextField(20);
		txt2.setEditable(false);
		txt1.addKeyListener(new KeysAdapter());
		frm.add(txt1);
		frm.add(txt2);
		frm.setVisible(true);
	}

	static class KeysAdapter extends KeyAdapter {
		public void keyTyped(KeyEvent e) {
			txt2.setText(e.getKeyChar() + " is entered!");
		}
	}
}