JAVA 获取年月日时分秒

        Calendar calendar=new GregorianCalendar();//子类实例化
        System.out.println("年： "+calendar.get(Calendar.YEAR));
        System.out.println("月 "+(calendar.get(Calendar.MONTH)+1));
        System.out.println("日： "+calendar.get(Calendar.DAY_OF_MONTH));
        System.out.println("时： "+calendar.get(Calendar.HOUR_OF_DAY));
        System.out.println("分： "+calendar.get(Calendar.MINUTE));
        System.out.println("秒： "+calendar.get(Calendar.SECOND));
        System.out.println("毫秒 "+calendar.get(Calendar.MILLISECOND));