This project contains both a gradle plugin to support translating Java to Objective-C with J2objc, with dependency and packaging support for Xcode using Cocoapods.
To see how to run the Gradle plugin against a basic project, check out Basic Quickstart.
After the quickstart, see more tutorials in the menu under “Basic Quickstart/Tutorials”.
The libraries included in this org are going to be very core, Java-only libraries. Junit and mockito come straight out of the J2objc project itself.
More info about core J2objc libraries and the Gradle plugin.