Java_开机时间记录程序

将此程序生成runnable jar后添加到自启动文件列表中。以后每次开机时刻都可以被记录下来。

import java.io.*;

import java.util.Calendar;

public class MainClass2 {

public static void main(String[] args){

MainClass2 mc2 = new MainClass2();

mc2.Go();

}

public void Go(){

String str = "";

String nstr = "";

try{

FileReader fr = new FileReader("TimeRecord.txt");

BufferedReader br = new BufferedReader(fr);

while((str = br.readLine()) != null)

 nstr = nstr + str+"\r\n";

br.close();

}

catch(Exception e){}

Calendar cal = Calendar.getInstance();

int year = cal.get(Calendar.YEAR);

int month = cal.get(Calendar.MONTH)+1;

int day = cal.get(Calendar.DATE);

int hour = cal.get(Calendar.HOUR_OF_DAY);

int min = cal.get(Calendar.MINUTE);

nstr =nstr + year+" 年 "+month+" 月 "+day+" 日"+hour+"："+min;

try

 {

 FileWriter fw = newFileWriter("TimeRecord.txt");

 fw.write(nstr);  //输出数据到流。 

 fw.close(); //关闭流

 }

 catch(Exception e){}

}

}