### Question:
Sphere3d { public void create () { final SimpleUniverse simpleUniverse = new SimpleUniverse(); final BranchGroup branchGroup = new BranchGroup(); final Sphere sphere = new Sphere(mRadius); branchGroup.addChild(sphere); final DirectionalLight lightDirection = J3DUtils.createDefaultLight(); branchGroup.addChild(lightDirection); simpleUniverse.getViewingPlatform().setNominalViewingTransform(); simpleUniverse.addBranchGraph(branchGroup); } Sphere3d(final float radius); void create(); float getRadius(); void setRadius(final float radius); public float mRadius; }### Answer:
@Test public void test () { final Sphere3d sphere3d = new Sphere3d(.5f); sphere3d.create(); }