Calendar的使用:
Calendar.Builder builder =newCalendar.Builder();
Calendar calendar1 = builder.build();
Date date = calendar.getTime();
在 Calendar中我们则能够获得较为直观的年月日信息:
int year =calendar.get(Calendar.YEAR);
int month=calendar.get(Calendar.MONTH)+1;
int day=calendar.get(Calendar.DAY_OF_MONTH);
int hour=calendar.get(Calendar.HOUR_OF_DAY);
int minute =calendar.get(Calendar.MINUTE);
int seconds=calendar.get(Calendar.SECOND);
SimpleDateFormat用来进行简单的数据格式化转化操作
Date dNow = new Date( );
SimpleDateFormat ft = new SimpleDateFormat("E yyyy.MM.dd 'at' hh:mm:ss a zzz");