Java SecurityException: signer information does not match

Question

I recompiled my classes as usual, and suddenly got the following error message. Why? How can I fix it?

java.lang.SecurityException: class \"Chinese_English_D         


        

Answer 1

I am having this problem with Eclipse and JUnit 5. My solution is inspired by the previous answer by user2066936 It is to reconfig the ordering of the import libraries:

1. Right click the project.
2. Open [Java Build Path].
3. Click Order and Export.
4. Then push JUNIT to upper priority.