Introduction GUID Regex Java Validation

In Java, GUID (or UUID) validation is essential in many applications, particularly those involving database and record management. The java.util.regex package in Java can be used to validate GUIDs using regular expressions.

GUID Regex Validation

Java regex for GUIDs follows the standard 8-4-4-4-12 format.

The GUID Regex Pattern

Pattern:

^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-5][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$

How to Validate GUIDs in Java?

To validate GUIDs in Java:

import java.util.regex.*;

public class CreditCardValidator {
    public static boolean isValidVisaCard(String cardNumber) {
        String regex = "^(?:4[0-9]{12}(?:[0-9]{3})?)$";
        Pattern pattern = Pattern.compile(regex);
        Matcher matcher = pattern.matcher(cardNumber);
        return matcher.matches();
    }

    public static void main(String[] args) {
        String cardNumber = "4111111111111111";
        System.out.println("Is Visa card valid? " + isValidVisaCard(cardNumber));
    }
}

Uses of GUID Regex Validation

1. System Identification: Validating GUIDs used as identifiers in software systems and applications.

2. Data Consistency: Ensuring GUIDs maintain a consistent format across databases and APIs.

Conclusion

Java's robust regex capabilities facilitate effective GUID validation, ensuring adherence to the standard structure. For comprehensive validation, Akto's regex validator offers a tool for handling a variety of GUID formats and validation requirements.