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Today,more and more companies want to develop distributed transactional applications for the enterprise and leverage the speed,security,and reliability of server-side technology. Before presenting a way of designing such a system,several key terms need to be understood.
What is J2EE?
The Java 2 Platform Enterprise Edition (J2EE) technology provides a component-based approach to the design,development,assembly,and deployment of enterprise applications. The J2EE platform provides the ability to reuse components in different applications. J2EE is made up of 13 different technologies including JavaServer Pages,Servlets,Enterprise JavaBeans,JavaMail,XML,JavaMail and many more.
The main technologies that we will be using are:
• JavaServer Pages (JSP).
What are JavaServer Pages?
JavaServer Pages (JSP) is a technology based on the Java language and enables the development of dynamic web sites. JSP was developed by Sun Microsystems to allow server side development. JSP files are HTML files with special Tags containing Java source code that provide the dynamic content.
What are Servlets?
A Servlet is a Java class that provides special server side service. To display any information on a web page,HTML code is embedded in “println” statements. JSP technology is an extension of Servlets. It is easier to generate GUI pages using JSP because a web page editor (such as Macromedia DreamWeaver ) can be used to create simple pages.
What are Enterprise JavaBeans?
Enterprise JavaBeans (EJB) provides a component specification for the development of scalable and secure middleware components. The EJB Server handles security and transaction management details so developers can focus on implementing the business logic.
What are the benefits of using J2EE? There are several reasons for using the J2EE set of technologies: Extensibility and maintainability
Division of work along skill lines
Interoperability – legacy integration
Focus on implementing business logic
Separation of code with differing rates of change.
What are the benefits of using J2EE?
There are several reasons for using the J2EE set of technologies:
Extensibility and maintainability
- - Two forms in one JSP
- - PASS VARIABLES BETWEEN 2
- - Table data
- - Unable to laod the image
- - The Ultimate Web UI Frame