ssion.</p>

<p>All expression classes extend the base class <a href="../../javax/el/Expression.html" title="class in javax.el"><code>Expression</code></a>, making them
serializable and forcing them to implement <code>equals()</code> and 
<code>hashCode()</code>. Moreover, each method on these expression classes 
that actually evaluates an expression receives a parameter
of class <a href="../../javax/el/ELContext.html" title="class in javax.el"><code>ELContext</code></a>,
which provides the context required 