What is a Java Package?
A Java package is a set of classes which are grouped together.
This grouping helps to organize Java classes and codevent multiple Java classes with the same name.
Using Java Packages
To use a package in your Java source code, you must either import the package or use the fully qualified class name each time you use a class.
Using Fully Qualified Class Names
This example uses the Ammunition class from the ballistics package:
ballistics.Ammunition caliber = new ballistics.Ammunition();As you can imagine, using fully qualified class names can become a bit of a hassle.
Importing Classes
import java.util.ArrayList; // Import the ArrayList class from the java.util package import java.util.*; // Import all public classes from the java.util package
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