To prepare, we need to do the following:

1. Create a new Maven project.
2. Download the en-token.bin file from http://opennlp.sourceforge.net/models-1.5/. Save it at the root directory of the project.
3. Add the following POM dependency to your project:

<dependency>
    <groupId>org.apache.opennlp</groupId>
    <artifactId>opennlp-tools</artifactId>
    <version>1.9.0</version>
</dependency>