RFR: 8264734: SA's Address subclasses could use better hashCode() implementation

[Chris Plummer]

On Thu, 15 Apr 2021 15:44:15 GMT, Mitsuru kariya <github.com+2217224+kariya-mitsuru at openjdk.org> wrote:

> …tation

Please update all copyright dates to 2021. Only the latest year need to be updated. For example:

`  * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.`

 becomes
  
`  * Copyright (c) 2002, 2021, Oracle and/or its affiliates. All rights reserved.`

Also, please give a proper description of the PR. Right now it just says "…tation"

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Changes requested by cjplummer (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/3522