What is J2EE architecture explain with diagram?
Table 1-1 J2EE Standard Architecture Components
| Component | Description |
|---|---|
| J2EE Platform | A platform for hosting J2EE applications |
| J2EE Compatibility Test Suite | A compatibility test suite for verifying that a J2EE platform product meets the requirements set forth in the J2EE platform and component specifications |
What are the tiers in J2EE architecture?
Usually in J2EE architecture consist of four tiers Client Tier, Web Tier, Enterprise JavaBean Tier, and Enterprise Information Tier.
What is single tier application?
Basically, a one-tier architecture keeps all of the elements of an application, including the interface, middleware and back-end data, in one place. Developers see these types of systems as the simplest and most direct. Some experts describe them as applications that could be installed and run on a single computer.
What is the difference between 1 tier 2 tier and 3 tier architecture?
Two-tier architecture consists of two layers : Client Tier and Database (Data Tier). Three-tier architecture consists of three layers : Client Layer, Business Layer and Data Layer.
What is single tier architecture?
A single-tier architecture is an architecture in which the entire application resides on the user’s machine. Before networking became so easy and cheap, this was fre- quently the design of choice. The obvious drawback to single-tier architecture is that the data lives on a local machine, and no one else can access it.
What is J2EE explain features of J2EE?
This guide describes the following features: Java™ Database Connectivity (JDBC™) API. Transaction Service. Java Naming and Directory Interface™ (JNDI) API.
What is JSP and its architecture?
JSP architecture is a 3 tier architecture. It has a Client, Web Server, and Database. The client is the web browser or application on the user side. Web Server uses a JSP Engine i.e; a container that processes JSP. For example, Apache Tomcat has a built-in JSP Engine.
What is single tier structure?
A one-tier model has only one body instead of two separate ones. This body consists of executive directors and non-executive directors. The executive directors are in charge of the daily management, but will be supported intensively by the non-executive directors. The non-executives are expected to step in when needed.
What is a n-tier architecture give an example?
And there are n-tier architecture models that have more than three tiers. Examples are applications that have these tiers: Services – such as print, directory, or database services. Business domain – the tier that would host Java, DCOM, CORBA, and other application server object.
What does single tier mean?
A single-tier municipality is one that does not form part of an upper-tier municipality for municipal purposes and assumes all municipal responsibilities set out under the Municipal Act and other Provincial legislation.
What is difference between Tier and n-tier architecture?
Some web-based applications use a two-tier architecture, and others use an n -tier architecture that consists of three or more tiers. In a two-tier architecture, the client is on the first tier. The database server and web application server reside on the same server machine, which is the second tier.
What is 2 stands for in J2EE?
Acronym. Definition. J2EE. Java 2 Platform, Enterprise Edition (software; Sun Microsystems)
This tier contains containers, components and services. Usually in J2EE architecture consist of four tiers Client Tier, Web Tier, Enterprise JavaBean Tier, and Enterprise Information Tier. The middle tier consists of Web Tier+EJB tier.
What is J2EE middleware?
J2EE middleware defines a set of four independent tiers, over which applications can be built: A pictorial representation of these tiers is shown in Figure 1. Figure 1 J2EE: multitier application architecture. Presentation logic and business logic tiers fall under the application server zone—which is nothing but the J2EE platform implementation.
What are the top frequently asked J2EE interview questions?
A list of top frequently asked J2EE Interview Questions and answers are given below. 1) What do you understand by J2EE? J2EE stands for Java 2 Enterprise Edition. The functionality of J2EE is developing and deploying multi-tier web-based enterprise applications.
What are the different types of containers in J2EE architecture?
Containers in J2EE Architecture. 1 1. Application Client Container. The container includes a set of classes, libraries, other files that are required to execute client programs in their 2 2. Web Container. 3 3. EJB Container. 4 4. Applet Container.