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'This contains a helloWorld-type simple application and perhaps other examples. You need sbt 0.13 to build it, and this will pull daffodil's jars and everything else they depend on to your machine automatically. If you have sbt then just typing the command "sbt run" in the root directory where you cloned this will do all of it. Look in the src/main/java/HelloWorld.java file to see how the Java API works.
Create a Project for Your Schema
Please follow the pattern described in Standard DFDL Schema Project Layout. This makes testing and packaging the schema very easy, insures no name conflicts on classpaths if multiple schemas are used together, and so forth.