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How to determine whether a string is in date format in java

王林
王林Original
2020-05-15 10:38:195396browse

How to determine whether a string is in date format in java

You can use the parse method of the SimpleDateFormat class to determine. This method parses a string according to the formatted storage of the given SimpleDateFormat object.

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Specific code:

public static boolean isValidDate(String str) {
      boolean convertSuccess=true;
     // 指定日期格式为四位年/两位月份/两位日期,注意yyyy/MM/dd区分大小写;
       SimpleDateFormat format = new SimpleDateFormat("yyyy/MM/dd HH:mm");
       try {
     // 设置lenient为false. 否则SimpleDateFormat会比较宽松地验证日期,比如2007/02/29会被接受,并转换成2007/03/01
          format.setLenient(false);
          format.parse(str);
       } catch (ParseException e) {
          // e.printStackTrace();
// 如果throw java.text.ParseException或者NullPointerException,就说明格式不对
           convertSuccess=false;
       } 
       return convertSuccess;
}

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