RFR: 8359808: JavaRuntimeURLConnection should only connect to non-directory resources [v3]

[David Beaumont]

On Fri, 20 Jun 2025 16:20:37 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> src/java.base/share/classes/sun/net/www/protocol/jrt/JavaRuntimeURLConnection.java line 119:
>> 
>>> 117:     public long getContentLengthLong() {
>>> 118:         try {
>>> 119:             return getResourceNode().size();
>> 
>> Having getResourceNode() return the (lazily fetched) node avoids the reader needing to know/reason about how "connect()" has the side-effect of making the "resource" field non-null.
>
> It looks like ExplodedImage.PathNode.size() throws UncheckedIOException. That might need mapping back to IOException to get the -1 return consistently.

Done. That's a good spot (I comment it since it's a real gotcha otherwise).

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PR Review Comment: https://git.openjdk.org/jdk/pull/25871#discussion_r2161351498