There are a lot of confusion among Java programmers and Oracle Java Certification aspirants related to various Java 8 certifications e.g. what are exam codes, which exams they should go for, whether they are eligible for Java SE 8 upgrade exams, and what should they do if they have just passed Java SE 7 Programmer II certification. I will try to answer each of these questions here, but to get it right let's first clear the confusion about various Java SE 8 exams There are four Java 8 certifications available in Oracle's site:

1) Oracle Certified Associate, Java SE 8 Programmer OCAJP8, exam code 1Z0-808
2) Oracle Certified Professional, Java SE 8 Programmer OCPJP8, exam code 1Z0-809
3) Oracle Certified Professional, Java SE 8 Programmer (upgrade), exam code 1Z0-810
4) Upgrade to Java SE 8 OCP ( Java SE 6 and all prior versions) - exam code 1Z0-813