Date Validation in Java using Regular Expression

Date Time Validation

This example shows how to validate a Date string in Java using regular expression with Regex Pattern and Matcher validation.

Date Format: dd/mm/yyyy
Regular Expression Pattern: (0?[1-9]|[12][0-9]|3[01])/(0?[1-9]|1[012])/((19|20)\\d\\d)

The above regular expression is used to validate the date format in “dd/mm/yyyy”, you can easy customize to suit your need. However, it’s a bit hard to validate the leap year, 30 or 31 days of a month, we may need basic logic as below.

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