java中Swing会奔跑的线程侠

实现效果：

奔溃的线程侠：（单线程）

主线程正在处理刷新图片的请求时，无法再接受其他请求，从而陷入阻塞的死循环状态。

绘制图片

import java.awt.Graphics;import java.awt.Image;import java.awt.Toolkit;import javax.swing.JPanel;public class CartonPerson extends JPanel implements Runnable{Image img[]=new Image[6];int index=0;int speed;public CartonPerson(int speed){this.speed=speed;img[0]=Toolkit.getDefaultToolkit().getImage("1.png");img[1]=Toolkit.getDefaultToolkit().getImage("2.png");img[2]=Toolkit.getDefaultToolkit().getImage("3.png");img[3]=Toolkit.getDefaultToolkit().getImage("4.png");img[4]=Toolkit.getDefaultToolkit().getImage("5.png");img[5]=Toolkit.getDefaultToolkit().getImage("6.png");}public void run(){while(true){try{repaint();Thread.sleep(100);}catch(InterruptedException e){e.printStackTrace();}}}@Overridepublic void paintComponent(Graphics g) {// TODO Auto-generated method stubsuper.paintComponent(g);g.drawImage(img[index], 0, 0, getWidth(), getHeight(), this);//System.out.println(index);if(index==5){index=0;}else{index++;}}}

单线程的窗体布局

import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.JButton;import javax.swing.JFrame;public class SingleThreadCarton extends JFrame{CartonPerson p1;JButton bstart=new JButton("开始");JButton bpause=new JButton("稍等");JButton bresume=new JButton("继续");SingleThreadCarton(){init();this.setTitle("奔溃的线程侠");this.setSize(600, 500);this.setResizable(true);this.setLocationRelativeTo(null);this.setDefaultCloseOperation(EXIT_ON_CLOSE);this.setVisible(true);}void init(){this.setLayout(null);p1=new CartonPerson(0);p1.setBounds(260, 100, 80, 160);bstart.setBounds(260,280, 80, 30);bpause.setBounds(260, 320, 80, 30);bresume.setBounds(260, 360, 80, 30);this.add(p1);this.add(bstart);this.add(bpause);this.add(bresume);ButtonClick bc=new ButtonClick();bstart.addActionListener(bc);bpause.addActionListener(bc);bresume.addActionListener(bc);}class ButtonClick implements ActionListener{@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubif(e.getSource()==bstart){p1.run();}else if(e.getSource()==bpause){}else if(e.getSource()==bresume){}}}public static void main(String[] args){new SingleThreadCarton();}}

运行结果：

点击“开始”按钮后，程序奔溃。

多线程的窗体布局

import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.JButton;import javax.swing.JFrame;public class MultiThreadCarton extends JFrame{CartonPerson p1;Thread t1;JButton bstart=new JButton("开始");JButton bpause=new JButton("稍等");JButton bresume=new JButton("继续");MultiThreadCarton(){init();this.setTitle("奔跑的线程侠");this.setSize(600, 500);this.setResizable(true);this.setLocationRelativeTo(null);this.setDefaultCloseOperation(EXIT_ON_CLOSE);this.setVisible(true);}void init(){this.setLayout(null);p1=new CartonPerson(0);p1.setBounds(260, 100, 80, 160);bstart.setBounds(260,280, 80, 30);bpause.setBounds(260, 320, 80, 30);bresume.setBounds(260, 360, 80, 30);this.add(p1);this.add(bstart);this.add(bpause);this.add(bresume);ButtonClick bc=new ButtonClick();bstart.addActionListener(bc);bpause.addActionListener(bc);bresume.addActionListener(bc);t1=new Thread(p1);}class ButtonClick implements ActionListener{@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubif(e.getSource()==bstart){//p1.run();t1.start();}else if(e.getSource()==bpause){t1.suspend();}else if(e.getSource()==bresume){t1.resume();}}}public static void main(String[] args){new MultiThreadCarton();}}

运行结果：如顶图所示。

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