RFR: 8364361: [process] java.lang.Process should implement close and be AutoCloseable

[Francesco Andreuzzi]

On Tue, 5 Aug 2025 18:21:24 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

> The teardown of a Process launched by `ProcessBuilder` includes the closing of streams and ensuring the termination of the process is the responsibility of the caller. The `Process.close()` method provides a clear and obvious way to ensure all the streams are closed and the process terminated.
> 
> The try-with-resources statement is frequently used to open streams and ensure they are closed on exiting the block. By implementing `AutoClosable.close()` the completeness of closing the streams and process termination can be done by try-with-resources.
> 
> The actions of the `close()` method are to close each stream and destroy the process if it has not terminated.

src/java.base/share/classes/java/lang/Process.java line 663:

> 661:             // TBD: Log exceptions closing streams
> 662:             IOException ex = new IOException("exception closing process streams");
> 663:             exceptions.forEach((e) -> ex.addSuppressed(e));

Suggestion:

            exceptions.forEach(ex::addSuppressed);

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PR Review Comment: https://git.openjdk.org/jdk/pull/26649#discussion_r2255041896