如何让这段代码每隔一小时执行一次，不用crontab。

[dinghao37]

它的功能是播放警告声音并弹出一个窗口，它的窗口风格是系统风格吗？比如放到Linux中去，弹出窗口是Linux的风格吗？（声音暂不考虑）。如果不能，请各位前辈帮我修改实现。并且我想让Linux系统已启动就执行这个代码，有什么简单而又不易察觉的方法吗？不是我坏，是老板坏，非让我做这么个东东……拜求各位前辈！希望仔细说给小弟看。

package onewindow;

import javax.swing.JFrame;
import javax.swing.JOptionPane;
import java.awt.event.*;
import sun.audio.*;
import java.io.*;

public class WarningWindow implements WindowListener {
public WarningWindow() {
JFrame jf = new JFrame();
JOptionPane.showConfirmDialog(jf,
"Your system resources has insufficient, may affect the normal use of you!",
"Warning",
JOptionPane.OK_OPTION);
System.exit(1);
}


public static void main(String[] args) throws IOException{
FileInputStream fileau=new FileInputStream("C:\\WINDOWS\\Media\\Windows XP 惊叹号.wav");
AudioStream as=new AudioStream(fileau);
AudioPlayer.player.start(as);
new WarningWindow();
}
@Override
public void windowActivated(WindowEvent e) {
// TODO Auto-generated method stub

}
@Override
public void windowClosed(WindowEvent e) {
// TODO Auto-generated method stub

}
@Override
public void windowClosing(WindowEvent e) {
// TODO Auto-generated method stub

}
@Override
public void windowDeactivated(WindowEvent e) {
// TODO Auto-generated method stub

}
@Override
public void windowDeiconified(WindowEvent e) {
// TODO Auto-generated method stub

}
@Override
public void windowIconified(WindowEvent e) {
// TODO Auto-generated method stub

}
@Override
public void windowOpened(WindowEvent e) {
// TODO Auto-generated method stub

}

}

[sohighthesky]

Linux会弹出找不到文件的异常框，不过还是jswing风格
你要设置成应用系统风格才行

[sohighthesky]

  String nativeLF = UIManager.getSystemLookAndFeelClassName();
    
    // Install the look and feel
    try {
        UIManager.setLookAndFeel(nativeLF);
    } catch (InstantiationException e) {
    } catch (ClassNotFoundException e) {
    } catch (UnsupportedLookAndFeelException e) {
    } catch (IllegalAccessException e) {
    }

[swandragon]

记录当前系统时间
算出一个小时后的时间executeTime
启动一个线程，每隔一段时间比较一下系统时间和executeTime
如果系统时间大于executeTime就弹出窗口，播放声音
之后再将executeTime赋值为一个小时之后的时间

            //得到所有系统支持的界面外观
            LookAndFeelInfo[] laf = UIManager.getInstalledLookAndFeels();
            //设置界面外观
            UIManager.setLookAndFeel();