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Question:
(a) Differentiate between the following terms using suitable examples of your own:-
(i) inheritance v/s composition (ii) subclass v/s superclass (iii) software re-usability v/s data encapsulation
(b) Discuss why casting a superclass reference to a subclass reference is potentially dangerous. Use appropriate examples to support your answer.
(c) (i) Explain why Java does not support multiple inheritance.
(ii) What feature of Java helps to simulate multiple inheritance. Use a suitable example of your own to illustrate your answer.
(d) (i) Write down an inheritance hierarchy for classes Quadrilateral, Trapezoid, Parallelogram, Rectangle, Square. Use Quadrilateral as the superclass of the hierarchy.
(ii) Identify a maximum number of subclass levels in your hierarchy. (iii) The private data members of Quadrilateral should include the (x,y) coordinate pairs for the four endpoints of the Quadrilateral.
(iv) Write down a driver program that instantiates and displays objects of each of these classes.
Hello, My friend Roshan from India told me that you provide a high quality programming service which is why I''m here. I would like you to make a clone of an android app the app
To simplify complex class diagrams you may group classes into packages.
Implement the compare method of the following class RectangleComparator. The method compares two rectangles. The method should return: A positive integer if the area of the first r
We have to create a world class that contains a 2d array then create an abstract class called organism that contains move() method the organism should move randomly one step at the
Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b.
how to program
write a program to find the area under thecurve y=f(x)between x=a and x=b, integrate y=f(x) between the limits of a and b. the area under a curve between two points can be found by
the textbok is Introduction to Java™ Programming, Brief Version, Eighth Edition Week 8 Exercises Chapter 8 Programming Exercises from Pages 295 - 299. Do Exercise Problems 2,
Question Using 3 level of nested for loop, write a program that will produce the output as below.
program
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