Introduction

Date validation in Java is vital for applications that handle scheduling, data logging, or require date input verification. Java's java.util.regex package allows for regex-based date validation.

What is Date Regex?

Java regex for date validation ensures adherence to a specific date format, like YYYY-MM-DD.

The Date Regex Pattern

• Pattern for YYYY-MM-DD: ^\\d{4}-\\d{2}-\\d{2}$

• This pattern matches dates in the "YYYY-MM-DD" format.

How to Validate Dates in Java?

To validate dates in Java:

import java.util.regex.*;
public class DateValidator {
    public static boolean isValidDate(String date) {
        String regex = "^\\d{4}-\\d{2}-\\d{2}$";
        Pattern pattern = Pattern.compile(regex);
        Matcher matcher = pattern.matcher(date);
        return matcher.matches();
    }
    public static void main(String[] args) {
        String date = "2024-01-29";
        System.out.println("Is date valid? " + isValidDate(date));
    }
}

Uses of Date Regex Validation

1. User Input Validation: Verifying date formats in user interfaces and forms.

2. Data Consistency: Ensuring standard date formats in databases and during data exchange.

What next?

Java’s regex functionality for date validation is crucial for ensuring data integrity and user input accuracy. Akto's regex validator serves as an additional tool for handling diverse date formats and validation scenarios.