UIDefaultsClass

 public Object run() {
                    try {
                        Class c;
                        Object cl;
                        // See if we should use a separate ClassLoader
                        if (table == null || !((cl = table.get("ClassLoader"))
                                               instanceof ClassLoader)) {
                            cl = Thread.currentThread().
                                        getContextClassLoader();
                            if (cl == null) {
                                // Fallback to the system class loader.
                                cl = ClassLoader.getSystemClassLoader();
                            }
                        }
                        c = Class.forName(className, true, (ClassLoader)cl);
                        if (methodName != null) {
                            Class[] types = getClassArray(args);
                            Method m = c.getMethod(methodName, types);
                            return MethodUtil.invoke(m, c, args);
                        } else {
                            Class[] types = getClassArray(args);
                            Constructor constructor = c.getConstructor(types);
                            return constructor.newInstance(args);
                        }
                    } catch(Exception e) {
                        // Ideally we would throw an exception, unfortunately
                        // often times there are errors as an initial look and
                        // feel is loaded before one can be switched. Perhaps a
                        // flag should be added for debugging, so that if true
                        // the exception would be thrown.
                    }
                    return null;
                }