Steps to Reproduce ______ Open Configure Build Path Click Edit option for Is modular Now click Switch to Tabs It won't open :) Stack trace - java.lang.ClassCastException: class ...

Don't let the occurrence of a RuntimeException in Java bring your code to a standstill. Here are 10 examples of how to avoid runtime exceptions in Java.

I have upgraded to version 1.43.0. But in all of my existing projects running a java class fails with a class not found exception. Example.