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blend4j is a partial reimplementation of the Python library bioblend for the JVM. bioblend for Python is a library for scripting interactions with Galaxy, CloudMan, and BioCloudCentral.


blend4j's JavaDocs contain some quick usage examples. Many more examples can be found in Aaron Petkau's blend4j tutorials and the integration tests. Examples of using blend4j in larger open source projects include Molgenis integration by Dennis Hendriksen and the TraIT Workflow Runner for use with tranSMART by Freek de Bruijn.

blend4j requires Java 8+ to function.


blend4j can be built with Apache Maven.

    % git clone git://
    % cd blend4j
    % mvn compile


Build Status

blend4j can be tested with Apache Maven.

    % mvn test 

In this default mode, blend4j will use the galaxy-bootstrap library to download, configure, and run an instance of Galaxy for testing (requiring an Internet connection). blend4j can be tested against an existing instance using the following Java system properties.

    % mvn -Dtest.galaxy.key=<key> -Dtest.galaxy.instance=<url> test

The above example will run a variety of tests and make various assumptions - some which may not be true for the supplied API key. Maven can be configured to run a specific test or tests.


The easiest way to obtain blend4j is using Maven Central.

For instance, if a project is using Maven, a blend4j dependency can be added by adding the following to the dependencies section of the project's pom.xml file.


Similar dependencies can be specified if using Ivy, Grape, Gradle, Buildr, or SBT. See mvnrepository for more details.

The latest blend4j jars can be downloaded from the Maven Central Repository.


The code is freely available under the Apache License Version 2.0.


blend4j is a JVM partial reimplementation of the Python library bioblend for interacting with Galaxy, CloudMan, and BioCloudCentral.




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