Chapter 8: Packages

The following pages have the complete source code and examples from Chapter 8, Packages, from the Java Developer's Resource.

Related classes can be combined into packages. Packages can be stored anywhere in the user's CLASSPATH and made available to different classes. Java provides a number of packages with many dozens of classes that handle input and output, networking, mathematical functions, graphical user interfaces and more. This chapter shows you how to unlock the power of Java's packages.

In this chapter you learn

What a package is
What packages are available
How to import a class or package
How to do high school math in Java

Example 8.1: java.lang.Math