</code></a> such as
<code>"${customer.name}"</code> can be used either
as an <i>rvalue</i> (return the value associated with property <code>name</code>
of the model object <code>customer</code>) or as an <i>lvalue</i> 
(set the value of the property <code>name</code> of the model object
<code>customer</code>).</p>

<p>A <a href="../../jakarta/el/MethodExpression.html" title="class in jakarta.el"><code>MethodExpression</code></a> such as
<code>"${handler.process}"</code> makes it possible to invoke a method 