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Question:
(a) Java does not support multiple inheritance but does provide the concept of ‘interface'. Explain how interfaces can help a programmer to implement multiple inheritance in their programs. Explain with suitable Java examples.
(b) What is an abstract class in Java? Describe the importance of implementing these classes in programs. Illustrate with an example of your own.
(c) Show the Java approach to event processing by explaining how event handling works in Java. Use an example to support your answer.
(d) Describe what is a ‘Listener' in Java using an appropriate example?
Type casting defines treating a variable of one type as though it is another type. When up casting primitives as given below from left to right, automatic conversion happens. Bu
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A Padovan string P(n) for a natural number n is defined as: P(0)=''X'' P(1)=''Y'' P(2)=''Z'' for a string characters ''X'',''Y'',''Z'' only,and given value of n,write a program th
Sequence diagrams are communication diagrams which detail what messages are sent and when. The sequence diagrams are placed according to time. The time performs as you move from to
In order to provide portable and reliable EJB elements, the following restrictions apply to EJB code implementation: 1. Avoid using static non-final fields. Defin
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Design and implement a class called Sphere that contains instance data that represents the sphere''s diameter, and include getter and setter methods for the diameter. Include metho
1 occurrence of "oog", and 1 occurrence each of "goog", "oogo",
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Cryptography, the study of secret writing, has been around for a very long time, from simplistic techniques to sophisticated mathematical techniques. No matter what the form howeve
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