What are J2EE containers?
A J2EE container is a server platform for running the J2EE application. An EJB container and Web container configure the J2EE container. A J2EE component runs on the J2EE container using the APIs provided by the Web container and EJB container.
What are the components of Web container in J2EE?
Web components can be servlets, JSP pages created with the JavaServer Pages™ technology, web filters, and web event listeners. These components typically execute in a web server and may respond to HTTP requests from web clients.
How many containers are there in J2EE?
J2EE application components use the protocols and methods of the container to access other application components and services provided by the server. The Application Server provides an application client container, an applet container, a Web container, and an EJB container.
What are the 3 main types of containers in Java?
There are three container types – frames, dialogs and applets – but applets are no longer used and most browsers no longer support them.
What is EJB container in J2EE?
The EJB Container Enterprise beans (EJB components) are Java programming language server components that contain business logic. The EJB container provides local and remote access to enterprise beans. There are three types of enterprise beans: session beans, entity beans, and message-driven beans.
What is J2EE architecture?
J2EE Architecture is made up of three tier, such as the client tier that is used as an interactive medium for the end user or the client & consists of web clients and application clients, the middle tier that is used for defining logical functioning units & consist of web components and EJB components, and the …
What is component and container in Java?
Java 8Object Oriented ProgrammingProgramming. The class Component is the abstract base class for the non-menu user-interface controls of AWT. A component represents an object with graphical representation. The class Container is the superclass for the containers of AWT.
What are the different components that are used as a container in Java?
Three of the most useful container types are JFrame , JPanel , and JApplet . A JFrame is a top-level window on your display. JFrame is derived from JWindow , which is pretty much the same but lacks a border. A JPanel is a generic container element used to group components inside of JFrame s and other JPanel s.
What is the difference between Web container and EJB container?
Container Types Enterprise JavaBeans (EJB) container: Manages the execution of enterprise beans for Java EE applications. Enterprise beans and their container run on the Java EE server. Web container: Manages the execution of web pages, servlets, and some EJB components for Java EE applications.
What is the difference between JSP and servlet?
JSP is slower than Servlet because the first step in JSP lifecycle is the translation of JSP to java code and then compile. Servlet can accept all protocol requests. JSP only accept http requests. In Servlet, we can override the service() method.
What is difference between Java and J2EE?
Core Java is used for developing a desktop based application while J2ee is used for Enterprise development. Core java is a programming language used to develop general java application whereas J2ee is a computing platform which consists of core java with a powerful set of libraries. Core java is j2se.