Sams Teach Yourself Java™ in 24 Hours, Fifth Edition

Chapter 11. Describing What Your Object Is Like

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WHAT YOU’LL LEARN IN THIS HOUR:

• Creating variables for an object or class

• Using methods with objects and classes

• Calling a method and returning a value

• Creating constructors

• Sending arguments to a method

• Using this to refer to an object

• Creating new objects

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As you learned during last hour’s introduction to object-oriented programming (OOP), an object is a way of organizing a program so it has everything it needs to accomplish a task. Objects consist of attributes and behavior.

Attributes are the information stored within an object. They can be variables such as integers, characters, and Boolean values, or objects such as String and Calendar objects. Behavior is the groups ...