Singapore NRIC (used as health ID) Regex for Java

What this pattern does

This page provides a lightweight, single-purpose regular expression for matching singapore nric (used as health id), ported and verified for Java. Identity and credential patterns need both correctness and safety, since they're frequent targets for adversarial input. The snippet below is ready to drop into your Java project — whether you're validating in a Spring Boot controller, a Jakarta EE service, or a standalone utility class.

Java Implementation

// Singapore NRIC (used as health ID)
// ReDoS-safe | RegexVault — Identity & PII > Health Identifiers

import java.util.regex.Pattern;

public class SingaporeNricUsedAsHealthIdValidator {
    private static final Pattern PATTERN =
        Pattern.compile("^([STFGM][0-9]{7}[A-Z])$");

    public static boolean validate(String input) {
        return PATTERN.matcher(input).matches();
    }

    // Example
    public static void main(String[] args) {
        System.out.println(validate("S1234567D")); // true
    }
}

Test Cases

When to use this pattern

This pattern is drawn from the Identity & PII > Health Identifiers category and carries a ReDoS-safe certification. That matters for Java developers because critical in Java applications since the JVM regex engine uses backtracking and is susceptible to ReDoS without careful pattern design. RegexVault audits patterns against known backtracking attack vectors, ensuring you have the necessary context before using this regex in a high-stakes production environment.

Common Pitfalls

Technical Notes

Singapore uses the NRIC number as the universal identifier across all government systems including healthcare. MOH (Ministry of Health), Polyclinic, and hospital systems all use NRIC as the patient identifier. See pii-nid-01 for full notes.