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. 
package org.bouncycastle.crypto.params;

import org.bouncycastle.math.ec.ECPoint;

public class ECPublicKeyParameters
    extends ECKeyParameters
{
    ECPoint Q;

    public ECPublicKeyParameters(
        ECPoint             Q,
        ECDomainParameters  params)
    {
        super(false, params);
        this.Q = Q;
    }

    public ECPoint getQ()
    {
        return Q;
    }
}