RFR: 8359808: JavaRuntimeURLConnection should only connect to non-directory resources [v4]

[David Beaumont]

On Tue, 24 Jun 2025 14:48:31 GMT, Alan Bateman <alanb at openjdk.org> wrote:

>> David Beaumont has updated the pull request incrementally with three additional commits since the last revision:
>> 
>>  - Remove redundant fast-path check.
>>  - Change method name.
>>  - Feedback changes (maybe some still to be done).
>
> src/java.base/share/classes/sun/net/www/protocol/jrt/JavaRuntimeURLConnection.java line 113:
> 
>> 111:     public long getContentLengthLong() {
>> 112:         // Note: UncheckedIOException is thrown by the Node subclass in
>> 113:         // ExplodedImage (this not obvious, so worth calling out).
> 
> This protocol handler is for images build, not exploded builds. ImageReaderFactory.getImageReader will fail if you attempt it with an exploded build. So I don't think we need this comment or the catch of UIOE.

Roger suggested I add the catch for the `UncheckedIOException` because of it. Maybe chat with him to see if this could somehow end up seeing an ExplodedImage build?

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PR Review Comment: https://git.openjdk.org/jdk/pull/25871#discussion_r2164354818