import dynamic_cast.*; public class dynamic_cast_runme { static { try { System.loadLibrary("dynamic_cast"); } catch (UnsatisfiedLinkError e) { System.err.println("Native code library failed to load. See the chapter on Dynamic Linking Problems in the SWIG Java documentation for help.\n" + e); System.exit(1); } } public static void main(String argv[]) { Foo f = new Foo(); Bar b = new Bar(); Foo x = f.blah(); Foo y = b.blah(); // Note it is possible to downcast y with a Java cast. String a = dynamic_cast.do_test((Bar)y); if (!a.equals("Bar::test")) { System.err.println("Failed!"); System.exit(1); } } }