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.tls;

public class TlsRuntimeException extends RuntimeException
{
    private static final long serialVersionUID = 1928023487348344086L;

    Throwable e;

    public TlsRuntimeException(String message, Throwable e)
    {
        super(message);

        this.e = e;
    }

    public TlsRuntimeException(String message)
    {
        super(message);
    }

    public Throwable getCause()
    {
        return e;
    }
}