adplus-dvertising
frame-decoration

Question

Which of these class is superclass of every class in Java?

a.

String class

b.

Object class

c.

Abstract class

d.

ArrayList class

Answer: (b).Object class

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. Which of these class is superclass of every class in Java?

Similar Questions

Discover Related MCQs

Q. Which of these method of Object class can clone an object?

Q. Which of these method of Object class is used to obtain class of an object at run time?

Q. Which of these keywords can be used to prevent inheritance of a class?

Q. Which of these keywords cannot be used for a class which has been declared final?

Q. Which of these class relies upon its subclasses for complete implementation of its methods?

Q. Which of these keywords are used to define an abstract class?

Q. Which of these is not abstract?

Q. If a class inheriting an abstract class does not define all of its function then it will be known as?

Q. Which of these packages contains abstract keyword?

Q. Which of this keyword must be used to inherit a class?

Q. A class member declared protected becomes a member of subclass of which type?

Q. Which of these is correct way of inheriting class A by class B?

Q. What is not type of inheritance?

Q. Using which of the following, multiple inheritance in Java can be implemented?

Q. All classes in Java are inherited from which class?

Q. In order to restrict a variable of a class from inheriting to subclass, how variable should be declared?

Q. If super class and subclass have same variable name, which keyword should be used to use super class?

Q. Static members are not inherited to subclass.

Q. Which of the following is used for implementing inheritance through an interface?

Q. Which of the following is used for implementing inheritance through class?