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The components of package names always correspond to the final components
of the path that specifies the directory in which the corresponding
compilation units reside. The initial components of the path are taken
from the value of CLASSPATH, an operating-system environment variable. Suppose,
for example, that you are working in a Windows environment, that the
value of the CLASSPATH environment variable includes the
d:\phw path, and that the package name for your program is
onto.java.entertainment. Then, the compilation units of the package
reside in the d:\phw\onto\java\entertainment directory:
*-- From the CLASSPATH variable | | *-- From the package name v v ------ ----------------------- d:\phw\onto\java\entertainment
If you are working in a Unix environment, the value of the
CLASSPATH environment variable includes /usr/phw, and the
package name is onto.java.entertainment, then the compilation units
of the package are in the /usr/phw/onto/java/entertainment
directory.