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
java" id="highlighter_378519">
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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();
}
}
}
@Override
public void paintComponent(Graphics g) {
// TODO Auto-generated method stub
super .paintComponent(g);
g.drawImage(img[index], 0 , 0 , getWidth(), getHeight(), this );
// System.out.println(index);
if (index== 5 ){
index= 0 ;
}
else {
index++;
}
}
}
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单线程的窗体布局
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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{
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if (e.getSource()==bstart){
p1.run();
}
else if (e.getSource()==bpause){
}
else if (e.getSource()==bresume){
}
}
}
public static void main(String[] args){
new SingleThreadCarton();
}
}
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运行结果:
点击“开始”按钮后,程序奔溃。
多线程的窗体布局
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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{
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if (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();
}
}
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运行结果:如顶图所示。
以上就是本次小编给大家带来的关于java中Swing会奔跑的线程侠这个示例的讲述,感谢大家对服务器之家的支持。
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