Reflexão Java – Obtenha todos os métodos na hierarquia

Utilitário estático rápido para obter todos os métodos declarados na hierarquia de classes.

/**
     * Gets an array of all methods in a class hierarchy walking up to parent classes
     * @param objectClass the class
     * @return the methods array
     */
    public static Method[] getAllMethodsInHierarchy(Class<?> objectClass) {
        Set<Method> allMethods = new HashSet<Method>();
        Method[] declaredMethods = objectClass.getDeclaredMethods();
        Method[] methods = objectClass.getMethods();
        if (objectClass.getSuperclass() != null) {
            Class<?> superClass = objectClass.getSuperclass();
            Method[] superClassMethods = getAllMethodsInHierarchy(superClass);
            allMethods.addAll(Arrays.asList(superClassMethods));
        }
        allMethods.addAll(Arrays.asList(declaredMethods));
        allMethods.addAll(Arrays.asList(methods));
        return allMethods.toArray(new Method[allMethods.size()]);
    }