© Kishori Sharan and Adam L. Davis 2022
K. Sharan, A. L. DavisBeginning Java 17 Fundamentalshttps://doi.org/10.1007/978-1-4842-7307-4_11

11. Object and Objects Classes

Kishori Sharan1   and Adam L. Davis2
(1)
Montgomery, AL, USA
(2)
Oviedo, FL, USA
 
In this chapter, you will learn:

  • The hierarchical class structure in Java

  • That the Object class is the superclass of all other classes

  • How to use methods of the Object class with detailed examples

  • How to reimplement methods of the Object class in your class

  • How to check two objects for equality

  • The difference between immutable and mutable objects

  • How to use the utility methods of the Objects class to deal with null values gracefully

  • A brief introduction to lambda expressions

All classes in this chapter are a member ...

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