==================================下面代码可以不看,只是为了保证代码的完整  
==================================
import java.awt.Toolkit;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import java.awt.Dimension;/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2006</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class Auto {
    boolean packFrame = false;    /**
     * Construct and show the application.
     */
    public Auto() {
        Auto_Frame frame = new Auto_Frame();
        // Validate frames that have preset sizes
        // Pack frames that have useful preferred size info, e.g. from their layout
        if (packFrame) {
            frame.pack();
        } else {
            frame.validate();
        }        // Center the window
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension frameSize = frame.getSize();
        if (frameSize.height > screenSize.height) {
            frameSize.height = screenSize.height;
        }
        if (frameSize.width > screenSize.width) {
            frameSize.width = screenSize.width;
        }
        frame.setLocation((screenSize.width - frameSize.width) / 2,
                          (screenSize.height - frameSize.height) / 2);
        frame.setVisible(true);
    }    /**
     * Application entry point.
     *
     * @param args String[]
     */
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.
                                             getSystemLookAndFeelClassName());
                } catch (Exception exception) {
                    exception.printStackTrace();
                }                new Auto();
            }
        });
    }
}
=============================
上面的代码不是重点.可以不看....
=============================
import java.awt.BorderLayout;
import java.awt.Dimension;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.JSplitPane;
import javax.swing.JScrollPane;
import javax.swing.JLabel;
import javax.swing.JTree;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.filechooser.FileFilter;
import javax.swing.border.TitledBorder;
import java.io.*;
import javax.swing.Timer;public class Auto_Frame extends JFrame {
    JPanel contentPane;
    BorderLayout borderLayout1 = new BorderLayout();
    JPanel jPanel1 = new JPanel();
    JButton jBuAuto = new JButton();
    JSplitPane jSplitPane1 = new JSplitPane();
    JScrollPane jScrollPane1 = new JScrollPane();
    JScrollPane jScrollPane2 = new JScrollPane();
    JTree jTree1 = new JTree();
  
    ImageIcon icon=new ImageIcon("F:/代码区/image/01.jpg");
    JLabel jLabel1 = new JLabel(icon);
    
    static Timer AutoTimer;
    
    
    public Auto_Frame() {
        try {
            setDefaultCloseOperation(EXIT_ON_CLOSE);
            jbInit();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }    private void jbInit() throws Exception {
        contentPane = (JPanel) getContentPane();
        contentPane.setLayout(borderLayout1);
        setSize(new Dimension(400, 300));
        setTitle("Auto");
        jBuAuto.setIcon(icon);
        jBuAuto.setText("Auto");
        jBuAuto.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                jBuAuto_actionPerformed(e);
            }
        });
        jLabel1.setText("jLabel1");
        contentPane.add(jPanel1, java.awt.BorderLayout.SOUTH);
        jPanel1.add(jBuAuto);
        contentPane.add(jSplitPane1, java.awt.BorderLayout.CENTER);
        jSplitPane1.add(jScrollPane1, JSplitPane.LEFT);
        jScrollPane1.getViewport().add(jTree1);
        jSplitPane1.add(jScrollPane2, JSplitPane.RIGHT);
        jScrollPane2.getViewport().add(jLabel1);
        
        
        AutoTimer.addActionListener(new ActionListener(){
            
            int i=0;
            File f=new File("F:/代码区/image/");
            String[] files=f.list();
          
                public void actionPerformed(ActionEvent e)
                {
                        if(e.getSource()==AutoTimer)
                                {
                                        if(i==files.length)
                                                i=0;
                                        icon=new ImageIcon("F:/代码区/image/"+files[i]);
                                        jLabel1.setIcon(icon);
                                        jLabel1.repaint();
                                        i++;                                        while(i>=0&&i<files.length){
                                            
                                        }
                                }
                }
        });    }    public void jBuAuto_actionPerformed(ActionEvent e) {
  
            AutoTimer.start();
    }
}

解决方案 »

  1.   

    我做的是一个自动播放photo的东西,我想要它每3秒自动播放一张.
      

  2.   

    AutoTimer=new Timer(3000,this);
    这句话老加不上去.
    在线等待求助
      

  3.   

    Timer timer = new Timer();
         timer.schedule(new TimerTask() { 
               public void run() 
               { 
                 MainProcess();  
               }
           },0,1*3000);
    這個可以!
      

  4.   

    Timer timer = new Timer();
    timer.scheduleAtFixedRate(notetimer, 1000, 1000 * 3);
      

  5.   

    我做的是一个自动播放photo的东西,我想要它每3秒自动播放一张.
    我做的是一个自动播放photo的东西,我想要它每3秒自动播放一张.
    我做的是一个自动播放photo的东西,我想要它每3秒自动播放一张.
    我做的是一个自动播放photo的东西,我想要它每3秒自动播放一张.
    我做的是一个自动播放photo的东西,我想要它每3秒自动播放一张.
    我做的是一个自动播放photo的东西,我想要它每3秒自动播放一张.
    我做的是一个自动播放photo的东西,我想要它每3秒自动播放一张.AutoTimer=new Timer(3000,this);
    这句话老加不上去.
    在线等待求助
      

  6.   

    java.util.Timer tmr = new java.util.Timer();
    java.util.GregorianCalendar now = null;
     tmr.schedule(new java.util.TimerTask(){
            public void run(){
               now = new GregorianCalendar();
              //do something        
           }
       },now.getTime(),3000);
      

  7.   

    没看代码,你的那个this是什么?如果不四、是TimerTask就是不行的,你查查Timer 的api 构造方法