Use Objects.hash() or own hashCode() implementation?

Question

I have recently discovered the Objects.hash() method.

My first thought was, that this tidies up your hashCode() implementation a lot. See the following

Answer 1

Note that the parameter of Objects.hash is Object.... This has two main consequences:

• Primitive values used in the hash code calculation have to be boxed, e.g. this.id is converted from long to Long.
• An Object[] has to be created to invoke the method.

The cost of creating of these "unnecessary" objects may add up if hashCode is called frequently.