DHIS 2 Support Commons is a Java utility library.
Browse the Javadocs.
This library is published to the central Maven repository and can be used in your Maven POM file like this:
<dependency>
<groupId>org.hisp.dhis</groupId>
<artifactId>dhis2-support-commons</artifactId>
<version>1.1</version>
</dependency>
The library requires Java 7. It depends on the Apache Commons Lang 3 and Apache JEXL libraries.