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

[Phil Race]

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.

src/demo/share/java2d/J2DBench/build.xml line 42:

> 40:   <property name="resources"  location="resources"/>
> 41: 
> 42:   <condition property="source" value="8">

This would be inconsistent with the Make target. It doesn't seem right to update just the ant-based target.

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PR Review Comment: https://git.openjdk.org/jdk/pull/26077#discussion_r2183618460