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As the textbook says, the Object class is the "Cosmic Superclass" for Java.

Every class in Java ultimately extends from the Object class.  It is the top of the Java inheritance hierarchy, which means that there is only a single inheritance tree in Java.  (In C++, this is not true;  there are as many inheritance trees as you wish to invent -- you get a forest, not a single tree.)

To get a good feel for what is in the Object class, click on this link: http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html , which will show you the Object class for Java 5/1.5.  Browse over it, to see what it supplies.

Here, we will talk about some of the features it provides.

This page was last modified on 02 October, 2007