0 What are JEE containers?

The following are the JEE containers.

Application client container
Application client container is the one which is responsible for managing the application client components. Both application client and its container resides at the client machine and are executed on the client end. Example of application container is JVM.

Applet container
Applet container is the container to manage the execution of applets. Examples of an applet container include Web browser and applet viewer.

Enterprise JavaBeans (EJB) container
Enterprise JavaBeans (EJB) container is used to manage the execution of EJB component of the J2EE application. Both the EJBs and its container run on the J2EE server. J2EE server provides the EJB container, and an example of J2EE server is WebLogic.

Web container
Web container is used to manage the execution of the Servlets and the JSP. Both the Web components and its container run on the J2EE server. An example of a web container is Tomcat.

Responsibilities of JEE containers

• Life cycle Management- Creating and deleting components
• Persistence- Saving information in the components
• Naming- Recording the name of a server component and locating it for the client.
• Deployment- Placing components in the server
• Messaging- Exchanging information between components.