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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                ### 概述 Calendar是日歷類,在Date后出現,替換掉了許多Date的方法。該類將所有可能用到的時間信息封裝為靜態成員變量,方便獲取。 Calendar為抽象類,由于語言敏感性,Calendar類在創建對象時并非直接創建,而是通過靜態方法創建,將語言敏感內容處理好,再返回子類對象,如下: ### 獲取實例 ~~~ Calendar c = Calendar.getInstance(); ~~~ 打印對象 ~~~ java.util.GregorianCalendar [time=1523367777772,areFieldsSet=true,areAllFieldsSet=true,lenient=true, zone=sun.util.calendar.ZoneInfo[id="Asia/Shanghai",offset=28800000, dstSavings=0,useDaylight=false,transitions=19,lastRule=null], firstDayOfWeek=1,minimalDaysInFirstWeek=1,ERA=1,YEAR=2018,MONTH=3, WEEK_OF_YEAR=15,WEEK_OF_MONTH=2,DAY_OF_MONTH=10,DAY_OF_YEAR=100, DAY_OF_WEEK=3,DAY_OF_WEEK_IN_MONTH=2,AM_PM=1,HOUR=9,HOUR_OF_DAY=21, MINUTE=42,SECOND=57,MILLISECOND=772,ZONE_OFFSET=28800000, DST_OFFSET=0] ~~~ ### 獲取當前時間 ~~~ public static void main(String[] args) throws Exception { Calendar c = Calendar.getInstance(); int year = c.get(Calendar.YEAR); int month = c.get(Calendar.MONTH) + 1; int day = c.get(Calendar.DAY_OF_MONTH); int hour = c.get(Calendar.HOUR); System.out.println(year + "年" + month + "月" + day + "日"+hour+"時"); } ~~~ ~~~ 2016年11月11日10時 ~~~ ### 設置時間 ~~~ public static void main(String[] args) throws Exception { Calendar c = Calendar.getInstance(); c.set(Calendar.YEAR,1992); c.set(Calendar.MONTH,3); c.set(Calendar.DAY_OF_MONTH,10); int year = c.get(Calendar.YEAR); int month = c.get(Calendar.MONTH); int day = c.get(Calendar.DAY_OF_MONTH); System.out.println(year+"年"+month+"月"+day+"日"); } ~~~ ~~~ 1992年3月10日 ~~~ ### 日歷偏移 ~~~ public static void main(String[] args) throws Exception { Calendar c = Calendar.getInstance(); c.add(Calendar.YEAR,1); //使用add方法 c.add(Calendar.MONTH,1); int year = c.get(Calendar.YEAR); int month = c.get(Calendar.MONTH)+1; int day = c.get(Calendar.DAY_OF_MONTH); System.out.println(year+"年"+month+"月"+day+"日"); } ~~~ ~~~ 2017年11月11日 //年份增加1年,月份增加1年 ~~~
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