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Hello guys!

1. How much harder is OCPJP 8 than OCPJP 7? Is your book focused on OCPJP 8 exam or on the upgrade exam?
2. How much should I prepare, considering that I've scored 90 for OCPJP 7? Can I skip any chapters in the book to be ready sooner?
3. How many lambda related questions are in the new exam? Is your book focused on lambda or it's a solid book for any OCA 7- programmer?
 
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Hi Silviu Burcea,

1. How much harder is OCPJP 8 than OCPJP 7? Is your book focused on OCPJP 8 exam or on the upgrade exam?


I have both OCPJP 7 as well as OCPJP 8 certifications; for me, both exams were of same difficulty level. But preparing for OCPJP 8 exam took more time than preparing for OCPJP 7 exam.

Our book is focused more on OCPJP 8 exam (specifically, 1Z0-809 exam). When designing the book, we carefully thought about supporting 1Z0-810 and 1Z0-813 ("Upgrade to Java SE 8 OCP" and "Java SE 6 and all prior versions"). Though the book covers all the topics, if we mention these exams in the title, then we thought we should ideally have practice exams for these certification paths. That will require three mock exams, i.e., for 1Z0-809, 1Z0-810 and 1Z0-813 exams. For this reason, we did not mention that our book supports all these three exams. However, the book is good for preparing for all these three exams (assuming that you can get mock tests from other sources for the upgrade exam).

2. How much should I prepare, considering that I've scored 90 for OCPJP 7? Can I skip any chapters in the book to be ready sooner?


Wow, 90% is an amazing score!!

Unlike Java 5/6 to Java 7 which was mostly easy for me and relatively effortless, transition from Java 7 to Java 8 was much more difficult for me. Though I had exposure to functional programming constructs because of programming in Groovy, still there was a steep learning curve for me to understand lambdas as supported in Java 8, functional interfaces, and stream API. Date and Time API is fun and amazing, but it was also completely new to me (I have not used Joda API in the past). So, I underestimated the effort required to learn Java 8 language and library additions and the book revision also took much more time (the book got released just a couple of months back). To cut the long story short: Please don't underestimate the time or effort required to learn Java 8 language and library features.

That said, since you already have OCPJP 7 certification, you can straightaway skip half of the chapters covered in our book, including class design, JDBC, localization, Java I/O and Java NIO.2, and exceptions and assertions. For other chapters like Generics and Collections, because of lambdas and streams, there are considerable changes in the exam topics. So, you still need to prepare for these topics.

3. How many lambda related questions are in the new exam? Is your book focused on lambda or it's a solid book for any OCA 7- programmer?


There were many lambda related questions in the new exam. Also, numerous questions on stream API and Date/Time API. The book is not focused on lambdas - it is a book focused on OCPJP 8 exam. And it's a solid book for those who have already cleared the OCAJP 8 exam (which is a pre-requisite for the OCPJP 8) exam.

I really like Java 8 features and I have become a big fan of Java streams (especially parallel streams) and the date/time API. So, certification or not, I recommend you to get updated with Java 8, and I am sure you won't regret for that!
 
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