Eclipse not finding main method when trying to export to runnable JAR

Question

I am trying to include some external dependencies in my JAR file when I export from eclipse, so I'm using the "Runnable JAR" export option. But when I choose my configuration to export and click "Finish", I get these errors . That configuration runs completely fine when I use Right Click > Run As on the class, and my main method is right here in the file I told Eclipse to look in. What could I be doing wrong when I export?

Here's my run configuration.

Answer 1

事实证明，JDK 9之后的最新Java版本会导致Eclipse出现某种问题，并且我能够在切换到JDK 8后导出。