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Question:
(a) Explain the importance of abstract classes in Java with an appropriate example.
(b) Explain what is meant by an interface in Java? Use a simple example to illustrate your answer.
(c) A GUI may contain text-fields, buttons, and other labels. A button usually triggers an event on the GUI. Explain the different processes in registering an event and handling the action performed by the button in Java.
(d) Write the code for a GUI which will allow a user to enter two numbers and then compute the product by clicking on a button. The result can be displayed in a text-field or as a label on the GUI.
differende between action listener and event listener
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The Action Class is type of the Model and is a wrapper around the business logic. The purpose of Action Class is to change the HttpServletRequest to the business logic. To use the
Your task is to design a scheduler for the Sheridan Rail Corporation which keeps track of all daily scheduled trips for the railway. Users can add new trips as well as perform sea
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how to write a program to assign value of variable age and print if person is major.
tag shows all the errors. iterates over ActionErrors request attribute.
i nedd servlet basics
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