CHAPTER 9
Creating Packages and Using Access Specifiers
What is a package in Java? In Java, package is a collection of related classes and interfaces. Just like we organize our files into folders, we normally have a Documents folder to keep all document files, a Music folder to keep all music files, a Videos folder to keep all video files; similarly we organize our classes and interfaces in Java into various packages.
In the earlier chapters and exercises, we have defined a few classes like the Rectangle
and the Cuboid
classes in Chapter 6 and then the Account
, SavingsAccount
and the CurrentAccount
classes in Exercise 8.1. Now the classes like Rectangle
and Cuboid
are related to geometrical shapes, and the Account
, SavingsAccount
and the CurrentAccount ...
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