RFR: 8361216: Do not fork javac in J2DBench ant build

[Eric Caspole]

On Tue, 1 Jul 2025 19:30:21 GMT, Eric Caspole <ecaspole at openjdk.org> wrote:

> Build J2DBench in ant using JAVA_HOME, not using fork to possibly pick a different javac from the PATH.

Could we move J2DBench under test next to micro/ ? It's not a demo, it's a benchmark but somehow it ended up under demos. It should remain available to contributors.

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PR Comment: https://git.openjdk.org/jdk/pull/26077#issuecomment-3032886850