void methods declared with the final keyword does what?

Question

sample code:
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public final void setName(String name) { this.name = name; }
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since void doesn't return any value, then why can the final keyword be used with it?
I don't really get it.

Answer 1

the final keyword ensures a method cannot be overridden whether void or not

Answer 2

Brains is right, if you would try to override the method in the subclass that would give an error, for example...

class A {
public final void a() {}
}

class B extends A {
public final void a() {} //Error
}