rameters:</dt>
<dd><code>name</code> - a <code>String</code> specifying the name of a request header</dd>
<dt>Returns:</dt>
<dd>an integer expressing the value of the request header or -1 if the request doesn't have a header of this name</dd>
<dt>Throws:</dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/NumberFormatException.html" title="class or interface in java.lang" class="external-link">NumberFormatException</a></code> - If the header value can't be converte