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java獲取時間整點工具代碼

time IV calendar 代碼 pan ins sdf 獲取時間 ring

  /**獲取上n個小時整點小時時間
     * @param date
     * @return
     */
    public static String getLastHourTime(Date date,int n){
        Calendar ca = Calendar.getInstance();
        ca.set(Calendar.MINUTE, 0);
        ca.set(Calendar.SECOND, 0);
        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
        ca.set(Calendar.HOUR_OF_DAY, ca.get(Calendar.HOUR_OF_DAY)
-n); date = ca.getTime(); return sdf.format(date); } /**獲取當前時間的整點小時時間 * @param date * @return */ public static String getCurrHourTime(Date date){ Calendar ca = Calendar.getInstance(); ca.set(Calendar.MINUTE, 0); ca.set(Calendar.SECOND,
0); date = ca.getTime(); SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss"); return sdf.format(date); }

java獲取時間整點工具代碼