Java / Design Patterns
Explain Front controller design pattern in Java/J2ee.
The front controller design pattern provides a single handler for all the incoming requests for a resource in an application and then dispatches the requests to the appropriate handler for that type of request. The front controller may use other helpers API to achieve the dispatching mechanism.
ActionServlet in Struts 1 framework or Dispatchers in Struts 2 implements the Front controller design pattern.
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