Dear all, :roll: Im learning J2EE and Im a beginner What is JavaBean? What is the use of the getter and setter functions described in the Bean? How it is used to transfer data from a GUI and a database? In case of Struts we are using ActionForm What is its use? Kindly response to my question.
Thanks in Advance
Joined: Apr 25, 2005
Javabeans are independent,reusable software modules they extend java's "write once",run any where and "reuse every where" capability.
Each bean has properties,events and methods associated with it.
The set/get methods are used for setting and getting the properties of a Bean.
For a short introduction on Javabeans you can visit
ActionForm: An ActionForm is a JavaBean that extends org.apache.struts.action.ActionForm. ActionForm maintains the session state for web application and the ActionForm object is automatically populated on the server side with data entered from a form on the client side.
Joined: Sep 22, 2005
In Struts, java bean which extends ActionForm acts like a transform object between view (jsp) and action (servlet). so u can directly access the properties defined in jsp. on a return from servlet, it is useful in displaying the values of properties using BEAN or HTML tag of struts.