Class file has wrong version 52.0, should be 50.0

Question

I\'m trying to compile my project in IntelliJ idea. I\'m using a class in an external jar file and on compilation receiving the above error.

I understand that it\'s

Answer 1

If you are using javac to compile, and you get this error, then remove all the .class files

rm *.class     # On Unix-based systems

and recompile.

javac fileName.java