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;

public class SupplementalDataEntry
{
    protected int dataType;
    protected byte[] data;

    public SupplementalDataEntry(int dataType, byte[] data)
    {
        this.dataType = dataType;
        this.data = data;
    }

    public int getDataType()
    {
        return dataType;
    }

    public byte[] getData()
    {
        return data;
    }
}