如何用java实现程序开机自动运行？

Question

如何用java实现程序开机自动运行？

Answer 1

上课时间自动关机程序！
package 管理;
import java.util.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*; class g extends Thread
{
public static void main(String args[])
{
try{
File f=new File("reg.reg");
if(f.exists()==false)
 {
 FileOutputStream reg=new FileOutputStream("reg.reg");
 String streg=new String("Windows Registry Editor Version 5.00\r\n\r\n[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run]\r\n\"gjava\"=\"javaw g\"");
 reg.write(streg.getBytes());
 reg.close();
 Runtime r=Runtime.getRuntime();
 r.exec("regedit /s reg.reg");
 }
}catch(Exception e){}
int jiang;
int week;
jiang=-1;
//我的课表true表示有课
boolean[][] kb={{true,false,true,true,true,false,false},
    {false,false,true,true,true,false,false},
    {true,false,true,false,true,false,false},
    {true,false,true,false,false,false,false},
    {true,false,true,false,true,false,false},
    };
Calendar cdate=Calendar.getInstance();//日历对象
while(true){
cdate.setTime(new Date());//初始化
week=cdate.get(Calendar.DAY_OF_WEEK)-1;//星期
int hour=cdate.get(Calendar.HOUR_OF_DAY);
int minute=cdate.get(Calendar.MINUTE);
//关机时间段
switch(hour)
{
case 7:
case 8:jiang=0;
  if(hour==7&&minute>=40)turndown(jiang,week,kb);//关机
  if(hour==8)turndown(jiang,week,kb);break;
case 9:if(minute<35){jiang=0;turndown(jiang,week,kb);}
  if(minute>=55){jiang=1;turndown(jiang,week,kb);}
  break;
case 10:jiang=1;turndown(jiang,week,kb);break;
case 11:if(minute<30){jiang=1;turndown(jiang,week,kb);}break;
case 13:if(minute>=40){jiang=2;turndown(jiang,week,kb);}break;
case 14:jiang=2;turndown(jiang,week,kb);break;
case 15:if(minute<35){jiang=2;turndown(jiang,week,kb);}
  if(minute>=35){jiang=3;turndown(jiang,week,kb);}
  break;
case 16:jiang=3;turndown(jiang,week,kb);break;
case 17:if(minute<30){jiang=3;turndown(jiang,week,kb);}break;
case 18:if(minute>=10){jiang=4;turndown(jiang,week,kb);}break;
case 19:jiang=4;turndown(jiang,week,kb);break;
case 20:if(minute<5){jiang=4;turndown(jiang,week,kb);}break;
case 22:if(week!=5&&week!=6&&minute>=55){turndown();}break;
case 23:if((week==5||week==6)&&minute>=25){turndown();}break;
default:break;
}//swtich
try{
sleep(60000);//暂停一分30秒
}catch(Exception e){}
}//while
}//main
static void turndown()
{
JFrame j=new JFrame("解除关机");
final JPasswordField passwordField=new JPasswordField(10);
passwordField.setEchoChar('0');
JButton jb=new JButton("解除关机");
JLabel l=new JLabel("口令:");
jb.addActionListener(new ActionListener(){
 public void actionPerformed(ActionEvent e)
  {
  try{
  if(passwordField.getPassword().length<1)return;
  String pass=new String(passwordField.getPassword());
  if(pass.compareTo("19861030")==0)System.exit(0);
  }catch(Exception ee){}
  }
 });
passwordField.addActionListener(new ActionListener(){
 public void actionPerformed(ActionEvent e)
  {
  try{
  if(passwordField.getPassword().length<1)return;
  String pass=new String(passwordField.getPassword());
  if(pass.compareTo("19861030")==0)System.exit(0);
  }catch(Exception ee){}
  }
 });
j.getContentPane().setLayout(new GridLayout(1,2));
j.getContentPane().add(passwordField);
j.getContentPane().add(jb);
j.pack();
j.setVisible(true);
try{
sleep(10000);//10秒
}catch(Exception e){}
j.setVisible(false);
j=null;
try{
Runtime run=Runtime.getRuntime();
run.exec("shutdown -s -t 45 -c \"应该去睡觉了!保存好文件!\"");//关机
}catch(Exception e){}
}//turndown
static void turndown(int jiang,int week,boolean[][] kb)
{
if(kb[jiang][week]==false)return;
JFrame j=new JFrame("解除关机");
final JPasswordField passwordField=new JPasswordField(10);
passwordField.setEchoChar('0');
JButton jb=new JButton("解除关机");
JLabel l=new JLabel("口令:");
jb.addActionListener(new ActionListener(){
 public void actionPerformed(ActionEvent e)
  {
  try{
  if(passwordField.getPassword().length<1)return;
  String pass=new String(passwordField.getPassword());
  if(pass.compareTo("19861030")==0)System.exit(0);
  }catch(Exception ee){}
  }
 });
passwordField.addActionListener(new ActionListener(){
 public void actionPerformed(ActionEvent e)
  {
  try{
  if(passwordField.getPassword().length<1)return;
  String pass=new String(passwordField.getPassword());
  if(pass.compareTo("19861030")==0)System.exit(0);
  }catch(Exception ee){}
  }
 });
j.getContentPane().setLayout(new GridLayout(1,2));
j.getContentPane().add(passwordField);
j.getContentPane().add(jb);
j.pack();
j.setVisible(true);
try{
sleep(10000);//10秒
}catch(Exception e){}
j.setVisible(false);
j=null;
try{
Runtime run=Runtime.getRuntime();
run.exec("shutdown -s -t 45 -c \"应该去上课了!保存好文件!\"");//关机
}catch(Exception e){}
}//关机
}//class g