画坦克__事件处理机制__2个监听

Posted 2020-10-09

一、代码如下

package www.tainiu.gui;

import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.sound.sampled.LineEvent;
import javax.sound.sampled.LineListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class ah__JianTing__V1 extends JFrame implements ActionListener {
	JPanel mp=null;
	JButton jb1= null;
	JButton jb2= null;
	

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		ah__JianTing__V1 jv= new ah__JianTing__V1();

	}

	public ah__JianTing__V1() {
		// TODO Auto-generated constructor stub
		mp= new MyPanel_V9();
		jb1= new JButton("黑色");
		jb2= new JButton("红色");
		
		this.add(jb1, BorderLayout.NORTH);
		this.add(this.mp);
		this.add(jb2, BorderLayout.SOUTH);
		
		mp.setBackground(Color.blue);
		
		this.setSize(200, 150);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setVisible(true);
		//注册监听
		jb1.addActionListener(this);
		jb1.setActionCommand("黑色");
		jb2.addActionListener(this);
		jb2.setActionCommand("红色");
		
		jb1.addActionListener(new Cat());
		//jb1.setActionCommand("黑色");
		
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		// TODO Auto-generated method stub
		//System.out.println("ok");
		if(e.getActionCommand().equals("黑色")) {
			System.out.println("您好，您点击的是【黑色】按钮");
			mp.setBackground(Color.BLACK);
		} else if(e.getActionCommand().equals("红色")) {
			System.out.println("您好，您点击的是【红色】按钮");
			mp.setBackground(Color.red);
		}
	}

}

class MyPanel_V9 extends JPanel{
	@Override
	public void paint(Graphics g) {
		// TODO Auto-generated method stub
		super.paint(g);
		
	}
	
}

class Cat implements ActionListener {

	@Override
	public void actionPerformed(ActionEvent e) {
		// TODO Auto-generated method stub
		if(e.getActionCommand().equals("黑色")) {
			System.out.println("猫猫监听，您点击的是【黑色】按钮");
			//mp.setBackground(Color.BLACK);
		} else if(e.getActionCommand().equals("红色")) {
			System.out.println("猫猫监听，您点击的是【红色】按钮");
			//mp.setBackground(Color.red);
		}
	}
	
}

 

package www.tainiu.gui;

import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

import javax.swing.Action;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class ah__JT_V2 extends JFrame {
	JPanel mp= null;

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		ah__JT_V2 jv= new ah__JT_V2();

	}
	
	public ah__JT_V2() {
		// TODO Auto-generated constructor stub
		mp= new MyPanel__V10();
		this.add(mp);
		
		this.setSize(400, 300);
		this.setVisible(true);
		
		//绑定监听操作
		this.addKeyListener((KeyListener) mp);
		
	}


	

}



class MyPanel__V10 extends JPanel implements KeyListener{
	int x= 10;
	int y= 10;
	@Override
	public void paint(Graphics g) {
		// TODO Auto-generated method stub
		super.paint(g);
		g.fillOval(this.x, this.y, 20, 20);
	}
	@Override
	public void keyTyped(KeyEvent e) {
		// TODO Auto-generated method stub
		
	}
	@Override
	public void keyPressed(KeyEvent e) {
		// TODO Auto-generated method stub
		if(e.getKeyCode() == KeyEvent.VK_DOWN) {
			this.y ++;
		}else if(e.getKeyCode() == KeyEvent.VK_UP) {
			this.y --;
		}else if(e.getKeyCode() == KeyEvent.VK_LEFT) {
			this.x --;
		}else if(e.getKeyCode() == KeyEvent.VK_RIGHT) {
			this.x ++;
		}
			
		
		this.repaint();
	}
	@Override
	public void keyReleased(KeyEvent e) {
		// TODO Auto-generated method stub
		
	}
	
}