If I have multiple files of the same name on classpath (e.g. I have multiple .jar with log4j.properties), what are the rules JVM follows to chose one?
Java: Which of multiple resources on classpath JVM takes?
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3 Answers
I am contributing a proven case that if classpath is, say, all jars in a folder, and you want to prioritize one (or some) of them, this does not work:
Windows:
bin/prioritized.jar;bin/*
Linux:
bin/prioritized.jar:bin/*
It appears that the first path bin/prioritized.jar is ignored just because the second one with a wildcard includes it in its own scope. This is what effectivelly breaks the specified order of classpaths.
Therefore, in order to have multiple resources prioritized (tested on Java 10.0.1), you need to put them in non-overlapping scopes and then they will work.
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