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Live example


If you want to see a live example of the capabilities of the Java Ecosystem, you can have a look at Sonar on Sonar.

Description / Features

The Java Ecosystem is a set of Sonar plugins used to monitor the quality of Java projects within Sonar.


The Java Ecosystem is provided with Sonar.

As any other plugins, you can update it through the Update Center or download new version into the SONAR_HOME/extensions/plugins directory. Then restart the Sonar server.


Run a Sonar Analysis

To launch a Sonar analysis of your Java project, it is recommended to use:

Sample projects for each analyzer are available on GitHub that can be browsed or downloaded: /projects/languages/java

Tests and Code Coverage

The default code coverage engine for unit tests can be set in Settings > Configuration > General Settings > Java > Code coverage plugin property.

By default the code coverage engine is JaCoCo but CoberturaEmma or Clover can also be used.

To see how to deal with unit tests and code coverage for Java project in Sonar, see Code Coverage by Unit Tests for Java Project tutorial.

To see how to deal with integration tests and code coverage for Java project in Sonar, see Code Coverage by Integration Tests for Java Project tutorial.

Advanced Parameters

Documentation on advanced parameters is available on the Analysis Parameters page.

Advanced parameters specific to Java are:

KeyDescriptionDefault value


Deactivate Java bytecode analysis. The Java bytecode is analyzed by Sonar in order to extract dependencies between packages and files. These dependencies are used for instance to display the DSM (Dependency System Matrix). This bytecode analysis can be deactivated.


Java version of the source code. This property is not used by the Sonar core but can be used by Java Sonar plugin like the PMD plugin. 

1.7 since Sonar 2.12



Extending Coding Rules using XPath

New coding rules can be added using XPath. See the related documentation.

To navigate the AST, download the SSLR Java Toolkit.

Change Log


Release 1.1 (15 issues)

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