Validating date format in java should i practice dating
Catch parse exception to test if validation failed. Loop the above process for the set of formats against which the validation needs to be performed.
* In this scenario, there is no fixed format against which the validation is supposed to be done.
Simple Date Format class provides methods to format and parse date and time in java.
The Simple Date Format is a concrete class for formatting and parsing date which inherits
Many developers have commented on this post about the issue of Thread safety in this code snippet.
As Simple Date Format class itself is not thread safe it can cause issues in production.
* However, with JAVA , the easiest approach is to catch a Parse Exception.
* But, for catching a parse exception; we need to test it against a specified format.
It will contain a list of formats for which validation was successful.Today I realized that another piece of data that many programmers need to validate is the date.Many Java applications have to process input date values, so I thought it will be beneficial to this blog readers to show how regular expression can be used to validate date in Java. Now in Java you can convert a String to Date using Simple Date Format class. If it is successful in converting String to Date, it returns the Date object. User might enter date in format “dd/mm/yyy” or “dd-mm-yyyy” or “yy”! It runs through each format from the list and check weather input string is valid date or not.
So, you put "" through that code and the code tells you it's valid. However, there is a possibility that the called program does not receive any format string as input. I can't speak for Paul, but my thoughts are that I would rather have it fail completely on an ambiguous format that just silently guess and go on processing as if that guess were correct.