I am writing some eclipse emf code and would like to print the content of an EObject (not store it to disk).

Here is what I try:

  public static void print(EObject obj) {
    Resource eResource = obj.eResource();
    try {
      eResource.save(System.out, null);
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

but that gives a NullPointerException. I have tried this instead:

  public static void print(EObject obj) {
    ResourceSet resourceSet = new ResourceSetImpl();
    resourceSet.getResourceFactoryRegistry().getProtocolToFactoryMap()
        .put("*", new XMIResourceFactoryImpl());
    Resource resource = resourceSet.createResource(URI.createURI("dummyfile.xml"));
    resource.getContents().add(obj);
    try {
      resource.save(System.out, null);
    } catch (IOException ioe) {
      ioe.printStackTrace();
    }
  }

This works, but is it not possible to print to screen without specifying a dummy URI??