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Questions about basics in Java Core

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Java Core. Basics

Java Core. Basics

Question 1 of 2

1

What is the general meaning of Object in java?

Select one of the following:

  • Object is the root-super class of any object in Java. All objects extend this class by default, even if there is no extends-section in signature of class.

  • Everything in Java is an object.

  • Object is an ordinary class. It has number of useful methods like equals, hashCode, toString. If any new class require to use these methods or override them it must contain "extends Object" section in it's signature.

Explanation

Question 2 of 2

5

List all methods in Object class which are allowed to be extended or overridden

Select one or more of the following:

  • getClass

  • hashCode, equals

  • toString

  • clone

  • finalize

  • wait, notify, notifyAll

  • getMethods

  • valueOf

  • sleep, notify, notifyAll

  • equalsIgnoreCase

Explanation

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