// The code example uses the DummyFileSystem, so the material files are not created.
// The path to the documents directory.
String MyDir = RunExamples.getDataDir();
// Initialize Scene object
Scene scene = new Scene();
// Create a child node
scene.getRootNode().createChildNode("sphere", new Sphere()).setMaterial(new PhongMaterial());
// Set saving options
ObjSaveOptions opt = new ObjSaveOptions();
opt.setFileSystem(new DummyFileSystem());
// Save 3D scene
scene.save(MyDir + "DiscardSavingMaterial_out.obj", opt);