How to determine if the page input is legal time in java

6554040

How to determine if the time entered on the page is a legal time, referring to hours, minutes, and seconds (not dates)
   Example: 16:30:40

永恒之骑士

It seems that this time does not include the date, this form is legal
If the landlord wants the hour to be between 0-24 and the minute to be between 0-60, it is not difficult to judge the string by yourself

89555858

It seems not difficult!
The landlord is lazy!

liuxiswt

Regular expression

pantao999

According to the format conversion, if there is no exception, the legal time is entered.

String str="16:30:40";
SimpleDateFormat sdf=new SimpleDateFormat("HH:mm:ss");
try{
Date d=sdf.parse(str);
}catch(Exception ex){
System.out.println("The input is incorrect!");
}

绝世小迷糊

Between 0-24 and between 0-60, just write a judgement

六翼炽天使

Between 0-24 and between 0-60, just write a judgement

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Haha, this method is really silly

seakey

Regular

liangliang01

2. String conversion time, please note that you can not judge whether the time input is correct, whether the time input is correct, please use regular.
try
     {
      String st="2015-13-32 12:00";
     java.text.DateFormat df = new SimpleDateFormat("yyyy-MM-dd hh:mm");
              Date starttime = df.parse(st);
     System.out.println(starttime.toString());
     }
catch(Exception ex)
{

}

6554040

How to write this regular expression?