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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.
What will be the output of this programme? Write comments where you find "//" symbol in the following code? function doSomething() { // 1 setTimeout('doSomething()',10000
what is class constant of trigo triangle abc.
Describe Graphics Objects ? In Java all drawing takes place via a Graphics object. This is an example of the class java.awt.Graphics. Initially the Graphics object you use w
i''ve done an application that calculates simplex methods i need to add big m method can any one help me?
I have to Create a program that determine the shipping cost for an order based on he following chart: From To Price $0.00 $19.99 $2.95 $20.00 $49.99 $3.95
Explain Subclasses and Polymorphism ? Car and Motorcycle are subclasses of MotorVehicle. If you instantiate a Car or a Motorcycle along with new, you can use in which object a
How to Returning Multiple Values From Methods ? It is not probable to return more than one value from techniques. You cannot, for example, return the licensePlate, speed and m
The non-final functions are clone (), finalize (), toString (), equals () , hashCode () and. The other methods like wait (), getClass (), notifyAll (), notify () etc are final
write a program to find the minimum no of colors to fill a board where some of the elements of different color are already placed.
The RMI architecture is based on one significant principle: the definition of behavior and the execution of that behavior are separate concepts. RMI allows the code that describes
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