Extra Credit Assignment 2

Software development

What is the value stored in x in following lines of code? int x, y, z; x = 0; y = 1; x = y = z = 8; a) 0 b) 1 c) 9 d) 8

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3. Which of the following is a method having same name as that of its class? a) finalize b) delete c) class d) constructor

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Which of these have highest precedence? a) () b) ++ c) * d) >>

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Which of these keywords can be used to prevent Method overriding? a) static b) constant c) protected d) final

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Which of these is correct way of calling a constructor having no parameters, of superclass A by subclass B? a) super(void); b) superclass.(); c) super.A(); d) super();

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Which of these class is superclass of every class in Java? a) String class b) Object class c) Abstract class d) ArrayList class

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Which of these keywords can be used to prevent inheritance of a class? a) super b) constant c) Class d) final

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Which of these class relies upon its subclasses for complete implementation of its methods? a) Object class b) abstract class c) ArrayList class d) None of the mentioned

4. Which of the following statements are incorrect? a) static methods can call other static methods only. b) static methods must only access static data. c) static methods can not refer to this or super in any way. d) when object of class is declared, each object contains its own copy of static variables.

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Which of these keywords is used to prevent content of a variable from being modified? a) final b) last c) constant d) static

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