         </div>
          </div>
        </div>
        <p>
            The main class in our example application is used to open and
            close our environment and database. It also spawns all the
            threads that we need. We start with the normal series
            of Java package and import statements, followed by our class
            declaration:
        </p>
        <pre class="programlisting">// File TxnGuide.java

package db.txn;

import com.sleepycat.bind.serial.StoredClassCatalog;

