http://www.bouncycastle.org/java.html: The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8.
  • The Legion of the Bouncy Castle Inc. 
package org.bouncycastle.crypto.params;

import java.math.BigInteger;

public class SRP6GroupParameters
{
    private BigInteger N, g;

    public SRP6GroupParameters(BigInteger N, BigInteger g)
    {
        this.N = N;
        this.g = g;
    }

    public BigInteger getG()
    {
        return g;
    }

    public BigInteger getN()
    {
        return N;
    }
}