一.设置时间的时分秒为 00:00:00
Calendar today = Calendar.getInstance();
today.set(Calendar.HOUR_OF_DAY,0 );
today.set(Calendar.MINUTE,0 );
today.set(Calendar.SECOND,0 );
一.设置时间的时分秒为 00:00:00
Calendar today = Calendar.getInstance();
today.set(Calendar.HOUR_OF_DAY,0 );
today.set(Calendar.MINUTE,0 );
today.set(Calendar.SECOND,0 );