Look at the specification of your container.

For example, if you are using Tomcat the following table shows which
version of the Servlet/JSP spec is implemented by which version  of Tomcat.

Servlet/JSP Spec Apache Tomcat version
2.4/2.0 5.5.15
2.3/1.2 4.1.31
2.2/1.1 3.3.2