获取日期差值

本示例演示如何获取日期差值， 如 0 day 0 hour 0 min 1 sec

 

package c1;

import java.util.Calendar;

public class Test1 {
  public static void main(String[] args) {
    Calendar calendar = Calendar.getInstance();
    int oday=calendar.get(Calendar.DAY_OF_MONTH);
    int ohour=calendar.get(Calendar.HOUR_OF_DAY);
    int omin=calendar.get(Calendar.MINUTE);
    int osec=calendar.get(Calendar.SECOND);
   
    System.out.println(oday);
    System.out.println(ohour);
    System.out.println(omin);
    System.out.println(osec);
    try{Thread.sleep(1000);
   
    }
    catch(Exception e){}
    Calendar ccalendar = Calendar.getInstance();
    int cday=ccalendar.get(Calendar.DAY_OF_MONTH);
    int chour=ccalendar.get(Calendar.HOUR_OF_DAY);
    int cmin=ccalendar.get(Calendar.MINUTE);
    int csec=ccalendar.get(Calendar.SECOND);
   
    System.out.println(cday);
    System.out.println(chour);
    System.out.println(cmin);
    System.out.println(csec);
   
    if(csec-osec<0){
     csec=csec+60;
     cmin=cmin-1;
    }
    if(cmin-omin<0){    
     cmin=cmin+60;
     chour=chour-1;
    }
    if(chour-ohour<0){
     chour=chour+24;
     cday=cday-1;
    }
    System.out.println((cday-oday)+" day "+(chour-ohour)+" hour " + (cmin-omin)+" min "+(csec-osec)+" sec");
   
  }
}
/*
输出结果：
19
11
40
9
19
11
40
10
0 day 0 hour 0 min 1 sec
*/