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<title>Exception Handling</title>
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<p>Library Version 12.1.6.1</p>
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<td width="20%" align="left"><a accesskey="p" href="databaseLimits.html">Prev</a> </td>
<th width="60%" align="center">Chapter 1. Introduction to Berkeley DB </th>
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<div class="sect1" lang="en" xml:lang="en">
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<div>
<h2 class="title" style="clear: both"><a id="coreExceptions"></a>Exception Handling</h2>
</div>
</div>
</div>
<p>
Before continuing, it is useful to spend a few moments on exception
handling in DB with the
<span>java</span>.
</p>
<p>
<span>Most</span>
DB methods throw
<code class="classname">DatabaseException</code>
in the event of a serious error.
<span>
So your DB code must either catch this exception or declare it
to be throwable. Be aware that <code class="classname">DatabaseException</code> extends
<code class="classname">java.lang.Exception</code>. For example:
</span>
</p>
<a id="java_intro1"></a>
<pre class="programlisting">import com.sleepycat.db.DatabaseException;
...
try
{
// DB and other code goes here
}
catch(DatabaseException e)
{
// DB error handling goes here
} </pre>
<p>
You can obtain the DB error number for a
<code class="classname">DatabaseException</code>
by using
<span>
<code class="methodname">DatabaseException.getErrno()</code>.
You can also obtain any error message associated with that error
using <code class="methodname">DatabaseException.getMessage()</code>.
</span>
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