Does Method.hashCode() consider the method's parameter types?

Question

The Javadocs say:

Returns a hashcode for this Method. The hashcode is computed as the exclusive-or of the hashcodes for the underlying method's declaring class name and the method's name.

Conspicuously absent from this description are the types of the Method's parameter types - does this mean that two methods on the same class with the same name, but different parameters, would have the same hashCode()?

Answer 1

You are right - methods with the same name and the same declaring class have, as documented, the same hash-code. Which, I agree, is a bit counter-intuitive.

The code in Sun's JDK:

public int hashCode() {
    return getDeclaringClass().getName().hashCode() ^ getName().hashCode();
}

But hashCode() isn't a sign for equality. The equals(..) method takes into account arguments.