Don't drop exceptions, use try with resources
In one place Orekit still uses code that was written before try-with-resources was introduced. This code will silently ignore some exception instead of throwing them or adding them as suppressed exceptions.
Location:
ClasspathCrawler(ClassLoader, String...)
Hipparchus also has a couple reported in https://github.com/Hipparchus-Math/hipparchus/issues/71