What is the difference between component and container?
A component represents an object with graphical representation. The class Container is the superclass for the containers of AWT. The container object can contain other AWT components.
What is component and container in J2EE?
Container Services Containers are the interface between a component and the low-level platform-specific functionality that supports the component. Before a web component, enterprise bean, or application client component can be executed, it must be assembled into a J2EE module and deployed into its container.
What is container in J2EE?
A J2EE container is a server platform for running the J2EE application. A J2EE component runs on the J2EE container using the APIs provided by the Web container and EJB container. The Web container and EJB container provided by Application Server are compliant with Java EE 6.
What are the components of Web container in J2EE?
Web applications are composed of web components and other data such as HTML pages. 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.
What is the difference between class and component?
Answer: Class is a datatype that encloses data and function members. Component is a particular class that must implement the IComponent interface . It is the base class for all components in the common language runtime that marshal by reference.
What is the difference between a GUI container and GUI component?
The difference between the two is found in their intended purpose: As the term is commonly used, a component is an independent visual control, such as a push button or slider. A container holds a group of components. Thus, a container is a special type of component that is designed to hold other components.
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 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 are types of J2EE clients?
Types of J2EE Clients
- Web (HTML) clients: Clients that access J2EE services through the Internet HTTP protocols.
- Device clients: Clients that access J2EE services through hand-held devices and mobile phones using J2ME, WAP, and/or other technologies.
What is the role of Web container in J2EE architecture?
– The web container is used to implement the web components functionality. – The functionality specifies an environment, called as runtime environment which the web components security, deployment, life-cycle management transaction management, request-response services.
Which is better function component or class component?
In class components, the render method will be called, whenever the state of the components changes. On the other hand, the Functional components render the UI based on the props. Class Components should be preferred whenever we have the requirement with the state of the component.
Can we use hooks in class components?
You can’t use Hooks inside a class component, but you can definitely mix classes and function components with Hooks in a single tree. In the longer term, we expect Hooks to be the primary way people write React components.
How does a web container work in J2EE?
Web Container: A Web application runs within a Web container of a Web server which is also known as servlet container. The Web container provides the runtime environment through components. Web container manages the execution of JSP page and servlet components for J2EE applications.
How does the assembly process work in J2EE?
The assembly process involves specifying container settings for each component in the J2EE application and for the J2EE application itself.
Which is J2EE component runs on the client?
A J2EE component is a self-contained functional software unit that is assembled into a J2EE application with its related classes and files and that communicates with other components. The J2EE specification defines the following J2EE components: Application clients and applets are components that run on the client.
How is a web container similar to a JSP container?
A web container provides the same services as a JSP container .Web components and their container run on the J2EE server. Web server is a server which is capable of handling HTTP request send by a client and respond back with a HTTP response. Enterprise JavaBean (EJB) Container: EJB container is a server-side component architecture.