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Oracle Certified Professional Java SE 7 Programmer Exams 1Z0-804 and 1Z0-805: A Comprehensive OCPJP 7 Certification Guide (Expert's Voice in Java) 2013th Edition
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Top Customer Reviews
The authors also do not distinguish the difference between widening of primitive types and upcasting of classes.
The sum() method on page 166 creates n Double object wrappers, instead of using primitive double variable etc. and so on.
This book also contains many groundless optimization tips, for example it states that final classes in Java are more efficient, because "the method calls are resolved in compiler time" . That is wrong for Hotspot JVM, because it's smart enough to apply analogous optimization looking whether the method is effectively overriden in subclass or not - it's done during the classloading and has nothing to do with final keyword.
You should not justify twisting your code only by a hypothesis that there may exist some JVM where some specific optimization *may* work.
P.S. sorry for my English I'm not a native speaker.
Otherwise, this was a good study aid. It seems comprehensive.
Update- I completed this book the first time. It's like 650 pages. I will re-read it and then take the enthuware mock exams I bought (which they updated for me recently). I like the book, I like the writing style, I believe in the content, and it's nice to have somebody gather this information for me in a way that helps me target the exam. I'll update this when I get results on my exam. My recommendation is to read it twice, and I'm following my own recommendation. 650 pages is a lot of information to take in.
Update- After reading this book twice, taking and reviewing both included exams, reading the online Oracle.com Javadocs for the OCP JP SE 7 certification, getting a wee bit of practical experience, and taking and reviewing all 5+1 associated Enthuware exams, I passed the 804 exam on my first try. I got a 70%, where 65% is a passing score. This book was an important introductory step toward getting this certification. The study process up to today (June 9 2014 pass) took me 6 months of part-time study.
I recommend studying this book as a part of the above steps to prepare for the 804 exam.
Most Recent Customer Reviews
A good book, It come just like the description, but maybe a "like new" book is better choice!Published 12 months ago by Cristian Rodriguez
Even with the errata provided by the writers, the book still have errors. The writers appears to be not supporting this book anymore, because I wrote a question to writers, asking... Read morePublished 14 months ago by Thufir
I read this book and it helped me to pass in the exam 1Z0-804 in May, 7, 2015 with 73%.
In the end of the book there are two mock exams and I got 70% and 68%. Read more
My corrections are inside <>
p. 40, #32: Glob pattern in answer does not match pattern in question.
p. 97, ch. Read more