June 1999
Intermediate to advanced
512 pages
9h 58m
English
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Chapter 4. Classes and Objects
Java is an object-oriented programming language. To execute a Java program on the Java virtual machine, the JVM provides support for a number of basic object-oriented programming constructs. In this chapter we will explore that part of the JVM instruction set that facilitates an object-oriented programming style.
What Is an Object?
An object is an entity with four properties:
It has an identity. An object is not the same object as any other object.
It has a class. Each object is a member of exactly one class.
It may have fields. A field is a slot for storing values. All objects of the same class have the same fields. When you alter the fields of an object, it does not affect any other object.
It may have methods invoked ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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