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.tls;

import java.security.SecureRandom;

class TlsServerContextImpl
    extends AbstractTlsContext
    implements TlsServerContext
{
    TlsServerContextImpl(SecureRandom secureRandom, SecurityParameters securityParameters)
    {
        super(secureRandom, securityParameters);
    }

    public boolean isServer()
    {
        return true;
    }
}