Installing the Java Native Rendering Library
Step 1: Verify System Requirements
Make sure your system satisfies the requirements listed in the Overview. In particular, if you are running macOS 10.10 (Yosemite), make sure you have updated the Java Runtime Support framework.
Step 2: Download
Download the JAR file here.
Step 3: Install
Copy the JAR file to an appropriate location and add it to your classpath.