Answers for "exception in thread "main" java.lang.classcastexception: class java.lang.string cannot be cast to class course (java.lang.string is in module java.base of loader 'bootstrap'; course is in unnamed module of loader 'app')"

class java.lang.Integer cannot be cast to class java.lang.Long (java.lang.Integer and java.lang.Long are in module java.base of loader 'bootstrap')

// on my case, instead of casting I did:

Long variable = Long.valueOf(variable.get("Attribute").toString());

Posted by: Guest on October-24-2020

Code answers related to "exception in thread "main" java.lang.classcastexception: class java.lang.string cannot be cast to class course (java.lang.string is in module java.base of loader 'bootstrap'; course is in unnamed module of loader 'app')"