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[ÇóÖú] javaÖйØÓÚ¼ÓÔØÍ¼Æ¬ÎÊÌâ

package com.muchTask;

import java.awt.Container;
import java.awt.EventQueue;
import java.awt.Image;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class SleepMethodDemo extends JFrame implements Runnable {

        @Override
        public void run() {
                int width = getWidth();
                while(true){
                        for(int i=0;i<width;i+=3){
                                try{
                                        Thread.sleep(30);
                                }catch(InterruptedException e){
                                        e.printStackTrace();
                                }
                        }
                }

        }

        /**
         * @param args
         */
        public static void main(String[] args) {
                // TODO Auto-generated method stub
                EventQueue.invokeLater(new Runnable() {
                       
                        @Override
                        public void run() {
                                try{
                                        SleepMethodDemo frame = new SleepMethodDemo();
                                        frame.setVisible(true);
                                        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                                        Thread thread = new Thread();
                                        thread.start();
                                }catch(Exception e){
                                        e.printStackTrace();
                                }
                        }
                });       
        }
       
        public SleepMethodDemo(){
                super();
                setResizable(false);
                Container c = getContentPane();
                c.setLayout(null);
                setBounds(100,100,300,78);
                JLabel picture = new JLabel();
                //¼ÓÔØÍ¼Æ¬
                ImageIcon icon = new ImageIcon(getClass().getResource("D:\\Program Files\\eclipse-SDK-3.6.2-win32\\Thread\\bin\\com\\muchTask.aa.jpg");
                picture.setIcon(icon);
                picture.setBounds(0, 0, icon.getIconWidth(), icon.getIconHeight());
                c.add(picture);       
                setVisible(true);
               
        }

}
ÒÔÉÏÕâÊÇÎҵijÌÐò£¬ÎÒÏë°ÑͼͼƬ¼ÓÔØµ½JFrameÀïÃæ£¬ÓõÄÊǾø¶Ô·¾¶£¬¶øÇÒͼƬ·ÅÔÚÁ˸ùĿ¼Ï£¬Ò²¾ÍÊÇjavaÖеÄbinĿ¼ÏÂÃæ¡£µ«ÊÇÔËÐкó³öÏÖÁËÎÊÌ⣬ÈçÏÂËùʾ£º
java.lang.NullPointerException
        at javax.swing.ImageIcon.<init>(Unknown Source)
        at com.muchTask.SleepMethodDemo.<init>(SleepMethodDemo.java:59)
        at com.muchTask.SleepMethodDemo$1.run(SleepMethodDemo.java:39)
        at java.awt.event.InvocationEvent.dispatch(Unknown Source)
        at java.awt.EventQueue.dispatchEvent(Unknown Source)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.run(Unknown Source)
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