检查超类是否是java.lang.Object

Question

I use

if (clazz.getSuperclass().getName() == "java.lang.Object")

Is there a better way?

Answer 1

if ( clazz.getSuperclass( ) == Object.class )

There are 2 problems with your original implementation:

1. getSuperclass may return null and you get NPE when you call getName
2. You use identity equality with a String ( == instead of equals ). Strangely enough it may work in this case as "java.lang.Object" string is probably internalized.

Answer 2

怎么样

if (clazz.getSuperclass().equals(java.lang.Object.class))