polyglot-java 
polyglot-java demonstrates how to integrate different JVM languages into a multi-module Maven build.
Covered Languages
- Clojure (http://clojure.org/)
- Gosu (http://gosu-lang.org/)
- Groovy (http://groovy.codehaus.org/)
- Java (http://java.oracle.com/)
- Kotlin (http://kotlinlang.org/)
- Python (http://www.jython.org/)
- Ruby (http://jruby.org/)
- Scala (http://www.scala-lang.org/)
- Xtend (http://www.eclipse.org/xtend/)
Requirements
Java 1.7.0
$ export JAVA_HOME=/opt/jdk-1.7.0
$ export PATH=$JAVA_HOME/bin:$PATH
$ java -version
java version "1.7.0_51"
...
Maven 3.0
$ export MAVEN_OPTS=-XX:MaxPermSize=128m
$ export M2_HOME=/opt/maven-3.0
$ export PATH=$M2_HOME/bin:$PATH
$ mvn --version
Apache Maven 3.0.5 (r01de14724cdef164cd33c7c8c2fe155faf9602da; 2013-02-19 14:51:28+0100)
...
Usage
$ git clone https://github.com/vakuum/polyglot-java.git
Execute
$ cd polyglot-java
$ cat all/src/main/java/polyglot/All.java
$ mvn clean install -DskipTests
$ mvn exec:java --projects all
...
Hello, I am Java!
Clojure: Hello Java!
Gosu: Hello Java!
Groovy: Hello Java!
Java: Hello Java!
Kotlin: Hello Java!
Python: Hello Java!
Ruby: Hello Java!
Scala: Hello Java!
Xtend: Hello Java!
...
Execute a specific module
$ cd polyglot-java
$ mvn clean install -DskipTests
$ mvn exec:java --projects clojure
...
Clojure: Hello Clojure!
...
$ mvn exec:java --projects gosu
...
Gosu: Hello Gosu!
...
$ mvn exec:java --projects groovy
...
Groovy: Hello Groovy!
...
$ mvn exec:java --projects java
...
Java: Hello Java!
...
$ mvn exec:java --projects kotlin
...
Kotlin: Hello Kotlin!
...
$ mvn exec:java --projects python
...
Python: Hello Python!
...
$ mvn exec:java --projects ruby
...
Ruby: Hello Ruby!
...
$ mvn exec:java --projects scala
...
Scala: Hello Scala!
...
$ mvn exec:java --projects xtend
...
Xtend: Hello Xtend!
...
Executable JAR
$ cd polyglot-java
$ mvn clean install -DskipTests
$ mvn assembly:assembly --projects all -DskipTests
$ java -jar all/target/polyglot-java.jar
...
Hello, I am Java!
Clojure: Hello Java!
Gosu: Hello Java!
Groovy: Hello Java!
Java: Hello Java!
Kotlin: Hello Java!
Python: Hello Java!
Ruby: Hello Java!
Scala: Hello Java!
Xtend: Hello Java!
...
Tests
$ cd polyglot-java
$ cat all/src/test/java/polyglot/TestAll.java
$ mvn clean install -DskipTests
$ mvn test --projects all
...
Tests run: 10, Failures: 0, Errors: 0, Skipped: 0
...
License
Copyright (c) 2012-2014 Clemens Fuchslocher, released under the MIT license.