How do you use jsp code in xhtml page using facelets?

To use JSP code within an XHTML page using Facelets, you can employ the <jsp:include> tag to include a JSP file in your Facelets page. However, it's generally recommended to keep your code consistent by using either Facelets or JSP. If you decide to mix them, ensure that your server supports both and that you properly configure the web.xml for Facelet views. Lastly, remember that you should use Facelets features like managed beans and EL expressions for a more seamless integration.