This repository contains the source code for the Representer used by the Java track on Exercism. It takes a Java exercise solution submitted by a student and transforms it into a normalized representation.

If you want to contribute to the Java Representer, please refer to the Contributing Guide.

Start by building the JAR using Gradle:

./gradlew build

Then, run the Java Representer using build/libs/java-representer.jar. For example, to create a representation for a solution to the leap exercise, run:

java -jar build/libs/java-representer.jar leap /path/to/leap /path/to/output/folder

The Representer output can be found in the following files inside the /path/to/output/folder directory:

• representation.txt - Contains the normalized representation of the Java code inside the solution.
• mapping.json - Contains a mapping between the generated placeholders used in the representation and the original identifiers.
• representation.json - Contains metadata.

To run the Java Representer using Docker, first build and tag the Docker image:

docker build -t exercism/java-representer .

Then, run the image and mount the directory of the solution to represent. For example, to create a representation for a solution to the leap exercise, run:

docker run -v /path/to/leap:/input -v /path/to/output/folder:/output exercism/java-representer leap /input /output

The Representer output can be found in the following files inside the /path/to/output/folder directory:

• representation.txt - Contains the normalized representation of the Java code inside the solution.
• mapping.json - Contains a mapping between the generated placeholders used in the representation and the original identifiers.
• representation.json - Contains metadata.

To run the unit tests:

./gradlew test

To run the smoke tests using Docker:

bin/run-tests-in-docker.sh