On Mon, 1 May 2023 13:06:24 GMT, Jim Laskey <[email protected]> wrote:
>> Add flexible main methods and anonymous main classes to the Java language.
>
> Jim Laskey has updated the pull request incrementally with two additional
> commits since the last revision:
>
> - Anonymous main classes renamed to unnamed classes
> - Add test
src/java.base/share/classes/sun/launcher/LauncherHelper.java line 872:
> 870: Method mainMethod = null;
> 871: try {
> 872: mainMethod = MainMethodFinder.findMainMethod(mainClass);
The `MainMethodFinder.findMainMethod(...)` throws a `NoSuchMethodException`
when it can't find the regular `public static void main(String[])` or, when
preview is enabled, any other eligible main methods. That will now mean that
the next line here which catches a `NoSuchMethodException` can potentially end
up aborting with a (very confusing) error message about JavaFX application. We
should perhaps change that catch block to something like:
} catch (NoSuchMethodException nsme) {
if (!PreviewFeatures.isEnabled()) {
// invalid main or not FX application, abort with an error
abort(null, "java.launcher.cls.error4", mainClass.getName(),
JAVAFX_APPLICATION_CLASS_NAME);
} else {
// abort with something more clear error?
}
-------------
PR Review Comment: https://git.openjdk.org/jdk/pull/13689#discussion_r1185905158
