de class="literal">String</code>, and a
    <code class="literal">double</code>. We will be using the DB bind API from
    within the writer thread to serialize instances of this class and place
    them into our database.
</p>
        <pre class="programlisting">package db.txn;

import java.io.Serializable;

public class PayloadData implements Serializable {
    private int oID;
    private String threadName;
    private double doubleData;

    PayloadData(int id, String name, double data) {
        oID = 