Eclipse Java IDE JUnit5: junit.jupiter.api.Assertions is not accessible

Question

I\'m new to the whole programming stuff but here\'s my problem:

I used to add my JUnit test cases in Eclipse by right clicking on the project, and just add New >

Answer 1

You use the Java Platform Module System (JPMS) by having a module-info.java file in the default package probably without the required requires <module>; statement. JPMS was introduced in Java 9.

Do one of the following:

• Delete the module-info.java file (if needed, you can recreate it via right-clicking the project folder and choosing Configure > Create module-info.java)
• In module-info.java add the corresponding requires statement, e.g. by going to the line with the import statement and using the corresponding Quick Fix (Ctrl+1)