2. Packages

Important

Prerequisite Information

This chapter assumes that the reader has a knowledge of basic Unix commands and experience working with a command-line text editor (e.g. emacs, vi, etc.). To get the most out of this chapter, you should follow along, take notes, execute any given commands, run any code examples, and repeat as necessary. Simply reading (or skimming) is not sufficient for learning this material.

Course-Specific Learning Outcomes

• LO1.a: Navigate and modify files, directories, and permissions in a multi-user Unix-like environment.

• LO1.c: Create and modify text files and source code using a powerful terminal-based text editor such as Emacs or Vi.

• LO1.d: Use shell commands to compile new and existing software solutions that are organized into multi-level packages and have external dependencies.

Chapter Contents

Chapter Contents

• 2.1. Introduction
• 2.2. Setting up the Environment
• 2.3. Default Package
• 2.4. Named Package
• 2.5. Code Dependencies
• 2.6. Further Important Notes
  • 2.6.1. Setting the Class Path
  • 2.6.2. Import Statements
  • 2.6.3. The java.lang Package