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Class Cast Exception While Switching Tabs in Java Build Path

java.lang.ClassCastException: class org.eclipse.swt.custom.CTabFolder cannot be cast to class org.eclipse.swt.widgets.TabFolder (org.eclipse.swt.custom.CTabFolder and ...
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After upgrade to 1.43.0 launching a java class with runner fails with class not found

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.