Improves Application Partitioning, Reuse, and Maintainability
Using helpers results in a cleaner separation of the view from the business processing in an application. The helpers, in the form of JavaBeans (JSP 1.0+) and custom tags(JSP 1.1+), provide a place external to the view to encapsulate business logic. Otherwise, scriptlet code clutters the JSP, a cumbersome and unwieldy situation, especially in larger projects.
Additionally, business logic that is factored out of JSPs and into JavaBeans and custom tags is reused, reducing duplication and easing maintenance.
Improves Role Separation
Separating formatting logic from application business logic reduces dependencies that individuals fulfilling different roles might have on the same resources. For example, a software developer might own code that is embedded within HTML markup, while a Web production team member might need to modify page layout and design components that are intermingled with business logic. Neither individual fulfilling these roles may be familiar with the implementation specifics of the other individual's work, thus raising the likelihood of accidental modifications introducing bugs into the system.
J2EE Related Interview Questions
|Java Script Interview Questions||Adv Java Interview Questions|
|J2SE Interview Questions||Core Java Interview Questions|
|Java Struts Interview Questions||Hibernate Interview Questions|
|JavaServer Faces (JSF) Interview Questions||Java 8 Interview Questions|
|JavaFX Interview Questions||NHibernate Interview Questions|
|Spring MVC Framework Interview Questions||The Java Debugger (JDB) Interview Questions|
J2ee Platform Overview
Presentation Tier Design Considerations And Bad Practices
Business Tier Design Considerations And Bad Practices
J2ee Patterns Overview
Presentation Tier Patterns
Business Tier Patterns
Integration Tier Patterns
Epilogue J2ee Patterns Applied
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