$ java -version
java -version
openjdk version "11.0.7" 2020-04-14
OpenJDK Runtime Environment (build 11.0.7+10-post-Ubuntu-2ubuntu218.04)
OpenJDK 64-Bit Server VM (build 11.0.7+10-post-Ubuntu-2ubuntu218.04, mixed mode, sharing)
$ git clone https://github.com/mudathirmahgoub/Kind2JavaClient
$ cd Kind2JavaClient
$ ./gradlew build
$ java -jar build/libs/Kind2JavaClientMain.jar files/a1.json