Shape3D zero = new Shape3D( geom0, app0 );
Shape3D one  = new Shape3D( geom1, app1 );
Shape2D two  = new Shape2D( geom2, app2 );
. . .
Switch sw = new Switch( );
sw.setCapability( Switch.ALLOW_SWITCH_WRITE );
sw.addChild( zero );
sw.addChild( one );
sw.addChild( two );