Calendar calendar=Calendar.getInstance();System.out.println("年:"+calendar.get(Calendar.YEAR));System.out.println("月:"+(calendar.get(Calendar.MONTH)+1));System.out.println("日:"+calendar.get(Calendar.DATE));calendar.set(Calendar.MILLISECOND,0);calendar.set(Calendar.SECOND,0);calendar.set(Calendar.MINUTE,0);calendar.set(Calendar.HOUR_OF_DAY,0);System.out.println(DateFormatUtils.format(calendar.getTime(),"yyyy-MM-dd HH:mm:ss"));calendar.set(Calendar.HOUR_OF_DAY,24);System.out.println(DateFormatUtils.format(calendar.getTime(),"yyyy-MM-dd HH:mm:ss"));
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