Package Names and Locating Classes

• Use packages to avoid name clashes
  java.util.Timer vs. javax.swing.Timer
• Package names should be unambiguous
• Recommendation: start with reversed domain name
  com.horstmann.bigjava
  edu.sjsu.cs.walters: for Bertha Walters' classes (walters@cs.sjsu.edu)
• Path name should match package name
  com/horstmann/bigjava/Financial.java
• Path name starts with class path
  export CLASSPATH=/home/walters/lib:.
  set CLASSPATH=c:\home\walters\lib;.
• Class path contains the base directories that may contain package directories