Java - Object-Oriented Programming (OOPS) Concept - Inheritance Quiz

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#	Quiz
1 Discuss	Inheritance Which of this keyword must be used to inherit a class? 1] super 2] this 3] extent 4] extends Solution
10 Discuss	Inheritance Which of the following is used in implementing inheritance through class? 1] inherited 2] using 3] extends 4] implements Solution
11 Discuss	Inheritance Which of the following is used for implementing inheritance through an interface? 1] inherited 2] using 3] extends 4] implements Solution
12 Discuss	Inheritance Static members are not inherited to subclass. 1] True 2] False Solution
13 Discuss	Inheritance If super class and subclass have same variable name, which keyword should be used to use super class? 1] super 2] this 3] upper 4] classname Solution
14 Discuss	Inheritance In order to restrict a variable of a class from inheriting to subclass, how variable should be declared? 1] Protected 2] Private 3] Public 4] Static Solution
15 Discuss	Inheritance All classes in Java are inherited from which class? 1] java.lang.class 2] java.class.inherited 3] java.class.object 4] java.lang.object Solution
16 Discuss	Inheritance Using which of the following, multiple inheritance in Java can be implemented? 1] Interfaces 2] Multithreading 3] Protected methods 4] Private methods Solution
2 Discuss	Inheritance What will be the output of the following Java program? `class A { public int i; public int j; A() { i = 1; j = 2; } } class B extends A { int a; B() { super(); } } class super_use { public static void main(String args[]) { B obj = new B(); System.out.println(obj.i + " " + obj.j) } }` 1] 1 2 2] 2 1 3] Runtime Error 4] Compilation Error Solution
3 Discuss	Inheritance What will be the output of the following Java program? `class A { int i; } class B extends A { int j; void display() { super.i = j + 1; System.out.println(j + " " + i); } } class inheritance { public static void main(String args[]) { B obj = new B(); obj.i=1; obj.j=2; obj.display(); } }` 1] 2 2 2] 3 3 3] 2 3 4] 3 2 Solution
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