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Question:
(a) What are the main differences between an object and a class? Illustrate with appropriate examples.
(b) Differentiate between a global variable and a local variable. You may use a simple Java program to illustrate your answer.
(c) What do you understand by the term ‘constructor' in Java? Explain your answer with an appropriate example.
(d) Declare and initialise an array of type float of size 5 to store the marks obtained by a student at his examinations. Initialise the array with the following values {65, 57, 75, 49, 88}.
Write the code fragments in Java to find:
(i) the average mark obtained by the student at the examinations. (ii) the highest mark obtained by the student. (iii) the lowest mark obtained.
Explain the term - Garbage Collection Java performs garbage collection and eliminates the need to free objects explicitly. When an object has no references to
Mike sells on the average 15 newspapers per week (Monday – Friday). Find the probability that 2.1 In a given week he will sell all the newspapers [7] 2.2 In a given day he will se
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Super() Constructer: It is used to call constructor of parent class. Should be the first statement in the body of constructor. Using this we can access private variables
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No, java is not fully object oriented language due to it does not support "multiple inheritance" and "pointers" which are used in C++. But, by using Interfaces we can execute multi
What is difference between Design and System Architecture? System architecture is the conceptual design which defines the structure and/or behavior of a system. Whereas designs
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