Why you should not take the Oracle exam 1z0-808. Actually, I have gotten some pretty good past questions from https://www.gratisexam.com/. The problem was, I suspected the answers were questionable. So I have built them using NetBean, many of them, here https://1drv.ms/u/s!Aje-DdIVpfjSinK3jqS3ihfsGgnW?e=qw2FP5. During the exam most of the questions came out but I did not make it.
This means if I follow the wrong answers in https://www.gratisexam.com/ I might have passed. I believe Oracle does not verify the answers using their own compiler after the Java update and so. This is unethical art.
Their support site is completely hopeless. Give you a link to feedback but no proper reply. Do not go for this exam.