DateFormat dateTimeformat = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
String strBeginDate = dateTimeformat.format(new Date());
System.out.println(strBeginDate);
//以ä¸è¿åçæ¯12å°æ¶å¶çæ¶é´
DateFormat dateTimeformat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String strBeginDate = dateTimeformat.format(new Date());
System.out.println(strBeginDate);
//以ä¸è¿åçæ¯24å°æ¶å¶çæ¶é´
æ¾ç¤ºåºè¯¥ç¨ä¸é¢çè¿ä¸ªï¼å 为12å°æ¶å¶çç»ææ æ³åºåæ¯ä¸åè¿æ¯ä¸å
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddhhmmss");
Date date = sdf.parse("20111212133712");
System.out.println(date.getHours());
//è¿ç§æ¯å¯¹çï¼å符串=ãDATEæ¯å¯¹çãä½æ¯DATE=>å符串æ¯éç
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