java的Calendar和Date实例

最近看了看关于时间获取，Calendar和Date类，小了个例子涵盖大部分方法及常量，可运行对比。

代码资源下载路径：http://download.youkuaiyun.com/detail/yunwuhuxin/8161175

 

/*

* 计算2013-01-01的信息

*/

private static void theDay() {

cal = Calendar.getInstance();

System.out.println("----@@----current "+cal.getTime());

cal.set(2013, 0, 1, 0, 0,0);

System.out.println("----@@----after "+cal.getTime());

System.out.println("----@@----after YEAR: "+cal.get(Calendar.YEAR));

System.out.println("----@@----after MONTH: "+(cal.get(Calendar.MONTH)+1));

System.out.println("----@@----after DAY_OF_MONTH: "+cal.get(Calendar.DAY_OF_MONTH));

System.out.println("----@@----after DAY_OF_WEEK: "+cal.get(Calendar.DAY_OF_WEEK));

System.out.println("----@@----after DAY_OF_WEEK_IN_MONTH: "+cal.get(Calendar.DAY_OF_WEEK_IN_MONTH));

System.out.println("----@@----after HOUR_OF_DAY: "+cal.get(Calendar.HOUR_OF_DAY));

System.out.println("----@@----after MINUTE: "+cal.get(Calendar.MINUTE));

System.out.println("----@@----after SECOND: "+cal.get(Calendar.SECOND));}

 

/*

* 上月1号的一些信息

*/

private static void lastMonFirDay() {

cal = Calendar.getInstance();

System.out.println("-------current "+cal.getTime());

cal.set(Calendar.MONTH,cal.get(Calendar.MONTH)-1);

cal.set(Calendar.DAY_OF_MONTH, 1);

cal.set(Calendar.HOUR_OF_DAY, 0);

cal.set(Calendar.MINUTE, 0);cal.set(Calendar.SECOND, 0);

System.out.println("--------after "+cal.getTime());System.out.println("--------after YEAR: "+cal.get(Calendar.YEAR));

System.out.println("--------after MONTH: "+(cal.get(Calendar.MONTH)+1));

System.out.println("--------after DAY_OF_MONTH: "+cal.get(Calendar.DAY_OF_MONTH));

System.out.println("--------after DAY_OF_WEEK: "+cal.get(Calendar.DAY_OF_WEEK));

System.out.println("--------after DAY_OF_WEEK_IN_MONTH: "+cal.get(Calendar.DAY_OF_WEEK_IN_MONTH));

System.out.println("--------after HOUR_OF_DAY: "+cal.get(Calendar.HOUR_OF_DAY));System.out.println("--------after MINUTE: "+cal.get(Calendar.MINUTE));

System.out.println("--------after SECOND: "+cal.get(Calendar.SECOND));

}

 

 /*
  * Calendar的add和roll方法区别
  */