Abstract class or not

[raghulvarma]

Is Action,ActionSe rvlet and ActionForm a abstract class? If not which class is it?

[rsrinivasan]

Is Action,ActionSe rvlet and ActionForm a abstract class? If not which class is it?

Only ActionForm class is abstract class. Others are normal class only.

ActionServlet represents the "controller " in the Model-View-Controller (MVC) design pattern for web applications that is commonly known as "Model 2".

[Ganon11]

A great method to finding information on classes found in the Java library is the Java API found online. A quick Google search using the class name (e.g. Action.java) can find you a full page of in depth explanation (such as this website, the first result from the previously given example).

[iamdaviskurian]

ActionForm is an Abstract class and ActionServlet is a class that extends HttpServlet. Action is a normal class.

[BigDaddyLH]

ActionForm is an Abstract class and ActionServlet is a class that extends HttpServlet. Action is a normal class.

Ganon11 is right. Serving up answers on a silver platter that could have easily been found by the original poster if they had only bothered to open up an API page isn't really helping the poster. Remind them to use the API instead.