aleksandra jovanovic wrote:How much harder is to prepare for the 816 exam compared to the 815?
Like many things in programming, it depends. Specifically, it depends on
How much Java you knew coming into the 815. If you knew a lot, preparing for the 815 isn't as hard because you are "just" learning gotchas. If you are new to Java, preparing for the 815 is very hardHow familiar you are with the APIs covered on the 816. If you are an expert in Files IO or Concurrency, you'll find those parts easier
aleksandra jovanovic wrote:Is there a great difference in the depth of the needed knowledge?
There are some topics that are deeper like inner classes and exceptions. But it's more about APIs and not depth.
aleksandra jovanovic wrote:Is *a lot* more thorough topic coverage needed?
I found the 816 to be a little easier than the 809. The focus was more on APIs and less on trick questions about elements of Java. So learn the APIs well!
aleksandra jovanovic wrote:Would preparing one exam after another be easier?
Yes! Less time to forget the things you learned in the first exam.