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  1. AP Computer Science A
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Object Superclass

Sophie Anderson

Sophie Anderson

4 min read

Next Topic - Unit 10 Overview

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Study Guide Overview

This study guide covers the Object superclass in Java, including its role as the root of all classes. It explores key Object methods: hashCode(), equals(), and toString(). The guide explains their default behavior and the importance of overriding them for custom functionality.

#Introduction to the Object Superclass

Now that we have learned about inheritance, what even allows our classes and objects that we have created to work the way they do? Where do the general characteristics of all objects come from? The answer lies in the Object class.

The Object class is the superclass of all other classes as well as arrays and other data types. The Object class is part of the java.lang package.

When we call a constructor to a "top-level class" that the coder hasn't declared a superclass for, the Object cons...

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Question 1 of 9

What is the superclass of all other classes in Java? 🚀

String

Object

Class

System