Getting a list of accessible methods for a given class via reflection

Question

Is there a way to get a list of methods that would be accessible (not necessarily public) by a given class? The code in question will be in a completely different class.

Answer 1

As cletus and PSpeed has already answered - you need to traverse the inheritance tree of classes.

This is the way I do it, but without handling package private methods:

public static Method[] getAccessibleMethods(Class clazz) {
   List result = new ArrayList();

   while (clazz != null) {
      for (Method method : clazz.getDeclaredMethods()) {
         int modifiers = method.getModifiers();
         if (Modifier.isPublic(modifiers) || Modifier.isProtected(modifiers)) {
            result.add(method);
         }
      }
      clazz = clazz.getSuperclass();
   }

   return result.toArray(new Method[result.size()]);
}

I am using it in a backwards-compatibility checker where I know that the classes that might be affected will not be in the same package anyway.