java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key)
                         throws <a href="../../../javax/security/jacc/PolicyContextException.html" title="class in javax.security.jacc">PolicyContextException</a></pre>
<div class="block">This method may be used by a 
 <code>Policy</code> provider to activate the
 <code>PolicyContextHandler</code> registered to the context object key
 and cause it to return the corresponding policy context object from
 the c