clock.java

Timeset

/**
   @version 1.00 2004-10
   @author zzhuohuo
*/

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.util.*;
import javax.swing.*;

/**
   Set the shutdowntime of windowns os
*/
public class Clock
{
   public static void main(String[] args)
   {
      JFrame frame = new ClockFrame();
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.setLocationByPlatform(true);
      frame.show();
   }
}
/**

*/
class ClockFrame extends JFrame
{
	public ClockFrame()
	{
		setTitle("关机定时");
		setSize(WIDTH,HEIGHT);
	
	Container contentPanel = getContentPane();
	
	JPanel timePanel = new JPanel();
	timePanel.setLayout(new GridLayout(4,2));
	
	JLabel hourLable = new JLabel("设置时钟");
	timePanel.add(hourLable);
	hourBox = new JComboBox();
	timePanel.add(hourBox);
	for(int i = 0; i < 24; i++)
	{	
		hourBox.addItem(i);
	}
	hourBox.addActionListener(new 
		ActionListener()
		{
			public void actionPerformed(ActionEvent evt)
			{
				hour = ((Integer)hourBox.getSelectedItem()).intValue();
			}
		});
	
	JLabel minuteLable = new JLabel("设置分钟");
	timePanel.add(minuteLable);
	minuteBox = new JComboBox();
	timePanel.add(minuteBox);
	for(int i = 0; i < 60; i++)
	{	
		minuteBox.addItem(i);
	}
	minuteBox.addActionListener(new 
		ActionListener()
		{
			public void actionPerformed(ActionEvent evt)
			{
				minute = ((Integer)minuteBox.getSelectedItem()).intValue();
			}
		});
	
	JLabel secondLable = new JLabel("设置秒钟");
	timePanel.add(secondLable);
	secondBox = new JComboBox();
	timePanel.add(secondBox);
	for(int i = 0; i < 60; i++)
	{	
		secondBox.addItem(i);
	}
	secondBox.addActionListener(new 
		ActionListener()
		{
			public void actionPerformed(ActionEvent evt)
			{
				second = ((Integer)secondBox.getSelectedItem()).intValue();
			}
		});
	contentPanel.add(timePanel,BorderLayout.CENTER);
	
	JButton check = new JButton("确定");
	contentPanel.add(check,BorderLayout.SOUTH);
	check.addActionListener(new 
		ActionListener()
		{
			public void actionPerformed(ActionEvent evt)
			{
				calendar = new GregorianCalendar();
				 int currentSeconds = calendar.get(Calendar.HOUR_OF_DAY) * 3600
         		+ calendar.get(Calendar.MINUTE) * 60
         		+ calendar.get(Calendar.SECOND);
         	totalSeconds = hour * 3600 + minute * 60 + second;
         	if (totalSeconds - currentSeconds < 0) 
         	{
         		argue = (24 * 3600 + currentSeconds - totalSeconds)*1000;
         		JOptionPane.showMessageDialog(ClockFrame.this,"您设置的时间为 明天 " + hour + ":" + minute + ":" + second + "\n程序将在后台运行，并在第二日此时自动关闭计算机！","设置成功",JOptionPane.INFORMATION_MESSAGE);
         		hideFrame();
         	}
         	else 
         	{
         		argue = (totalSeconds - currentSeconds) * 1000;
         		JOptionPane.showMessageDialog(ClockFrame.this,"您设置的时间为 " + hour + ":" + minute + ":" + second + "\n程序将在后台运行，并在此时自动关闭计算机！","设置成功",JOptionPane.INFORMATION_MESSAGE);
         		hideFrame();
         	}
         	try
         	{
         	  	Thread.sleep(argue);
					Runtime.getRuntime().exec("shutdown.exe -s -c \"我要关机了噢！不要意思！\"");
				} 
				catch (Exception e) 
				{
					e.printStackTrace();
				}
					
			}
		});
	}
	private void hideFrame() {this.setVisible(false);}
	
	private JComboBox hourBox,minuteBox,secondBox;
	private int hour,minute,second,totalSeconds,currentSeconds;
	private long argue;
	private GregorianCalendar calendar; 
	private boolean change = true;
	private static final int WIDTH=200;
	private static final int HEIGHT=150;
}