XML by Example

Package

Java programs are organized in packages. Java packages play a role simi-

lar to XML namespaces: They prevent naming conflicts.

Packages are declared with the package statement, as in the following

example:

package com.psol.lel;

A package is also a logical unit that groups related classes. Therefore, you

can place all the classes of one application in a single package. In this case,

the

lel package stands for “local end of line.” Large applications may be

split over several packages.

To avoid conflicts in the name of packages, their names should always start

with your domain name in reverse order.

Imports

The name of a class is its package name followed ...