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.
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package org.bouncycastle.jce.spec;

import java.security.spec.KeySpec;


base class for an Elliptic Curve Key Spec

/**
 * base class for an Elliptic Curve Key Spec
 */
public class ECKeySpec
    implements KeySpec
{
    private ECParameterSpec     spec;

    protected ECKeySpec(
        ECParameterSpec spec)
    {
        this.spec = spec;
    }

    
return the domain parameters for the curve

/**
     * return the domain parameters for the curve
     */
    public ECParameterSpec getParams()
    {
        return spec;
    }
}