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.asn1;

import java.util.Date;

public class ASN1GeneralizedTime
    extends DERGeneralizedTime
{
    ASN1GeneralizedTime(byte[] bytes)
    {
        super(bytes);
    }

    public ASN1GeneralizedTime(Date time)
    {
        super(time);
    }

    public ASN1GeneralizedTime(String time)
    {
        super(time);
    }
}