<a href="ServletContext.html#setResponseCharacterEncoding(java.lang.String)"><code>ServletContext.setResponseCharacterEncoding(java.lang.String)</code></a> or the deployment descriptor.
 <p>
 If this method is called with an invalid or unrecognised character encoding, then a subsequent call to
 <a href="#getWriter()"><code>getWriter()</code></a> will throw a <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/UnsupportedEncodingException.html?is-external=true" title="class or inter