RFR: 8375712: Convert java/lang/runtime tests to use JUnit [v2]

[Aggelos Biboudis]

On Wed, 21 Jan 2026 19:43:36 GMT, Chen Liang <liach at openjdk.org> wrote:

>> Jan Lahoda has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase.
>
> test/jdk/java/lang/runtime/ExactnessConversionsSupportTest.java line 52:
> 
>> 50: public class ExactnessConversionsSupportTest {
>> 51: 
>> 52:     public void main(String[] args) {
> 
> Let's remove this main method altogether.

Agreed! 🚀

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PR Review Comment: https://git.openjdk.org/jdk/pull/29350#discussion_r2720279900