RFR: 8345431: Detect duplicate entries in jar files with jar --validate [v3]

[Christian Stein]

On Tue, 29 Apr 2025 14:36:37 GMT, Henry Jen <henryjen at openjdk.org> wrote:

>> This PR check the jar file to ensure entries are consistent from the central directory and local file header. Also check there is no duplicate entry names that could override the desired content by accident.
>
> Henry Jen has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Rename checkHasCenEntry to checkAnyCenEntry

test/jdk/tools/jar/ValidatorTest.java line 2:

> 1: /*
> 2:  * Copyright (c) 2025, 2025, Oracle and/or its affiliates. All rights reserved.

Suggestion:

 * Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.


One year is enough here, right?

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PR Review Comment: https://git.openjdk.org/jdk/pull/24430#discussion_r2066717887