Building a scala app with maven (that has java source mixed in)

Question

I have an application where I would like to have mixed Java and Scala source (actually its migrating a java app to scala - but a bit at a time).

I can make this wor

Answer 1

Using the maven scala plugin, a config like the one below will work for a project that mixes java and scala source (scala source of course goes in the /scala directory, as mentioned by someone else).

You can run run mvn compile, test etc... and it will all work as normal. Very nice (it will run scalac first automatically).

For a great IDE, IntelliJ 8 works nicely: add in the scala plug in, then add a scala facet, and then adjust the compile setting for scala to run scalac first (critical if you have circular dependencies with scala and java source).

4.0.0
demo
scala-java-app
0.0.1-SNAPSHOT
jar
scala-java-app

    
        scala-tools.org
        Scala-tools Maven2 Repository
        http://scala-tools.org/repo-releases
    


    
        scala-tools.org
        Scala-tools Maven2 Repository
        http://scala-tools.org/repo-releases
    


    
        
            org.scala-tools
            maven-scala-plugin
            

                
                    compile
                    
                        compile
                    
                    compile
                
                
                    test-compile
                    
                        testCompile
                    
                    test-compile
                
                
                   process-resources
                   
                     compile
                   
                
            
        
        
            maven-compiler-plugin
            
                1.5
                1.5
            
        
      


    
        org.scala-lang
        scala-library
        2.7.2
    
    
        junit
        junit
        3.8.1
        test