JSP is built on top of the Java Servlet (aka Jakarta Servlet) specification and is one of the Java web technologies included for ongoing support and upgrades in Jakarta EE. JSP and servlets ...

Figure 1 shows these three components in a layered diagram ... for server-side Java. The Java Servlet specification provides the underlying definition for a Java server and related components.

Prior to the Java EE 7 release, developers struggled to implement a Servlet file upload component because it was a rather sordid affair that required a great deal of error-prone and bloated code.

HTTP Session state is maintained within the servlet and forwarded to the JSP page using a Java bean maintained in a JSP tag. These infrastructure implementation details are not specified in the ...