Web Application using reusable components

 This scenario extends the previous web application. Here common and useful code is taken out of the JSP pages and moved into a JavaBean. Each JavaBean contains related methods specific to an application requirement. For example,all email methods such as mailing a message and mailing a file are stored in one JavaBean.

Advantages.

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  Simplifies the JSP page so a web designer can edit the design using their chosen tool.
  
  


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  Benefits of component reuse such as sharing common code,maintaining one set of code in one place and making testing quicker.
  
  


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  Allows the clean separation of tasks. One person working on making the web pages,whilst another works on the Java code.
  
  

Disadvantages.

• Need to make sure the components are designed correctly (granularity) otherwise they will not be reused.


• Not the most suitable for small to medium deployments as the EJB application server can consume alot of CPU and Memory resources.