Krishna Srinivasan wrote:There is not much difference in terms of exam topics between 7 & 8. If you have some more time for the preparation, then prepare OCA 8 and write it. doing latest certification always good.
This is true for the OCA. There are a few extra topics on 8.
For the OCP, there are likely to be more differences. Based on the upgrade exam, we can inform Nashorn and much about functional programming is on the exam.
It's not clear to me whether you can take the OCA 7 and OCP 8. (And before anyone cites any statements from Oracle on this, it's not clear to me, because this seems like the type of thing they might change their mind on before the exam gets released.) I recommend taking both the OCA 7 and OCP 7 to match your study materials. You can still learn the Java 8 concepts independently. I recommend "Java SE 8 for the Really Impatient" for that.