- Series: Expert's Voice in Java
- Paperback: 656 pages
- Publisher: Apress; 1st ed. edition (February 26, 2013)
- Language: English
- ISBN-10: 9781430247647
- ISBN-13: 978-1430247647
- ASIN: 1430247649
- Product Dimensions: 7.4 x 1.5 x 9.3 inches
- Shipping Weight: 2.6 pounds (View shipping rates and policies)
- Average Customer Review: 45 customer reviews
- Amazon Best Sellers Rank: #1,504,864 in Books (See Top 100 in Books)
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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) 1st ed. Edition
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About the Author
S G Ganesh is a practitioner working in the area of code quality management at Siemens Corporate Research and Technologies in Bangalore. He previously worked in HP's C++ compiler team and was also a member of the C++ standardization committee. His areas of interests include OO design, design patterns, and programming languages.He is a Software Engineering Certified Instructor (IEEE certification) and has an OCPJP 7 certification.
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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.
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.
Otherwise, this was a good study aid. It seems comprehensive.