The JXR plugin produces a cross-reference of the project's sources. The generated reports make it easier for the user to reference or find specific lines of code. It is also handy when used with the PMD plugin for referencing errors found in the code.
The JXR plugin has 2 goals:
Instructions on how to use the JXR Plugin can be found here.
To provide you with better understanding on some usages of the Javadoc plugin, you can take a look into the following examples: