On Mon, 8 Jun 2026 14:19:38 GMT, Dusan Balek <[email protected]> wrote:
> Automatic cleanup on FileSystem::close could be problematic. Consider the
> following code snippet:
>
> ```
> FileSystem fs = FileSystems.newFileSystem(URI.create("jrt:/"),
> Map.of("java.home", targetJavaHome));
> FileSystemProvider provider = fs.provider();
> fs.close(); // URLClassLoader is closed automatically now
> ...
> FileSystem newFs = provider.newFileSystem(URI.create("jrt:/"), Map.of());
> // Now any call to newFs instance that require additional class loading
> crashes
> ```
Ah my mistake, it creates a ClassLoader for each jrt provider, not each jrt
file system. So you are right, the close delegate to the URLClassLoader.
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PR Comment: https://git.openjdk.org/jdk/pull/31417#issuecomment-4650074065
