How to fix java module error "Caused by: java.lang.reflect.InaccessibleObjectException: module java.base does not "opens java.util" to unnamed module"
The error message you're seeing, (Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field private final java.util.Comparator java.util.TreeMap.comparator accessible: module java.base does not "open…