ry</code> objects are
      instantiated here. We will reuse these for every database operation that
      this program performs. Also a <code class="classname">MyDbEnv</code> object is
      instantiated here. We can do this because its constructor never throws
      an exception. See <a class="xref" href="dbtJavaUsage.html#dbsStoredClass" title="Example 8.4 Stored Class Catalog Management with MyDbs">Stored Class Catalog Management with MyDbs</a> for
      its implementation details.</p>
          <p>Fina