gistfile1.java

   @Override
   public DirectoryResource getSourceFolder()
   {
      MavenCoreFacet mavenFacet = project.getFacet(MavenCoreFacet.class);
      Build build = mavenFacet.getPOM().getBuild();
      String srcFolderName;
      if (build != null && build.getSourceDirectory() != null) {
         srcFolderName = build.getSourceDirectory();
      } else {
         srcFolderName = "src" + File.separator + "main" + File.separator + "java";
      }
      DirectoryResource projectRoot = project.getProjectRoot();
      return projectRoot.getChildDirectory(srcFolderName);
   }