Java键盘事件监听示例-优快云博客

本文链接：https://blog.youkuaiyun.com/hcwj2009/article/details/6693352

本文介绍了一个使用Java实现的简单键盘事件监听程序。通过继承JFrame并实现KeyListener接口，程序能够捕获并响应用户的键盘输入事件。文章展示了如何设置界面、添加文本区域以及注册键盘事件监听器。

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package com.test;

import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

class MyKeyTest  extends JFrame implements KeyListener	{
	
	private String type = "f1";
	private JTextArea text = new JTextArea();
	public MyKeyTest(){
		super.setTitle("test");
		JScrollPane jsp = new JScrollPane(text);
		jsp.setBounds(2, 2,400, 200);
		super.add(jsp);
		text.addKeyListener(this);
		super.setSize(310,210);
		super.setVisible(true);
		super.addWindowListener(new WindowAdapter(){
			//覆写窗口关闭方法
			public void windowClosing(WindowEvent argo){
				System.exit(1);
			}
		});
	}
	
	@Override
	public void keyTyped(KeyEvent e) {
		// TODO Auto-generated method stub
		text.append("输入："+e.getKeyChar()+"\n");
	}

	@Override
	public void keyPressed(KeyEvent e) {
		// TODO Auto-generated method stub
		text.append(KeyEvent.getKeyText(e.getKeyCode())+"键按下\n");
		if(KeyEvent.getKeyText(e.getKeyCode()) == type){
			System.out.println("hahahahaha");
		}
	}

	@Override
	public void keyReleased(KeyEvent e) {
		// TODO Auto-generated method stub
		text.append(KeyEvent.getKeyText(e.getKeyCode())+"键松开\n");

	}
	
}
public class MyKeyEventTest{
	public static void main(String[] args){
		new MyKeyTest();
	}
}