jakarta ee - Relationship between JSP and Java EE

Question

Is JSP part of the whole Java EE package? How are they related?

Answer 1

Java EE is a very big box. It includes:

1. Servlets and JSPs for the web tier,
2. EJBs - stateless and stateful session, entity, and message driven beans,
3. RMI for Java-to-Java remoting (also part of Java SE),
4. JDBC for relational database access (also part of Java SE),
5. JMS for messaging,
6. JTA for transaction monitoring,
7. JNDI naming and directory services,
8. Web services - SOAP, REST, RPC-XML,
9. E-mail,
10. Maybe others that I'm forgetting.

Plus containers that handle pooling, threading, lifecycle, etc.

As you can see, JSPs are just a small part of the larger whole.

You can accomplish a great deal with just a servlet/JSP engine (e.g., Tomcat or Jetty), servlets/JSPs, and JDBC. Any web app that exposes database CRUD via the web can be written with just these technologies.