Best Way to Calculate GCD in Java for Primitive Types

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In case you’re okay with using BigInteger, this method is one of the easiest ways to calculate java gcd for large numbers. Here’s how you can use it:

import java.math.BigInteger;

public class GCDExample {
    public static void main(String[] args) {
        int a = 36, b = 60;
        BigInteger bigA = BigInteger.valueOf(a);
        BigInteger bigB = BigInteger.valueOf(b);

        int gcd = bigA.gcd(bigB).intValue();
        System.out.println("GCD using BigInteger: " + gcd);
    }
}

:white_check_mark: Why use this? If you’re dealing with larger numbers, BigInteger is the built-in solution for computing java gcd.

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