title: What is context param in web.xml?
body: <p>What is <code>&lt;context-param&gt;</code> in <code>web.xml</code>? Why do we use it?</p>
  
  <p>For instance, what does the following do?</p>
  
  <pre><code>&lt;context-param&gt;
      &lt;param-name&gt;contextConfigLocation&lt;/param-name&gt;
      &lt;param-value&gt;/WEB-INF/dispatcher-servlet-servlet.xml&lt;/param-value&gt;
  &lt;/context-param&gt;
  </code></pre>