I have finally upgraded from SJC-P to Oracle certification. The motivation for taking the test was that the company said, "Let's save it!" Personally, I had only ** knowledge of Java 1.5 **, so I worked on it as a study of Java 8 + multiple reviews.
As a result ... Study period: 1 month (Weekdays. I used all my working hours.) Result: I feel like I managed to pass.
Upgrade to Java SE 8 OCP ( Java SE 6 and all prior versions) Because it is an upgrade from SJC-P.
** 1. Study with Kuromoto ** [Kuromoto](https://www.amazon.co.jp/%E5%BE%B9%E5%BA%95%E6%94%BB%E7%95%A5-Java-Gold-%E5%95 % 8F% E9% A1% 8C% E9% 9B% 86-1Z0-809 / dp / 4295000035) to solve the problem ⇒ Understand the explanation ⇒ Solve the comprehensive problem ⇒ Understand the explanation. ⇒ Solve the DL comprehensive problem ⇒ Understand the explanation. Was repeated twice. The second result went to a pretty good line, so this is perfect, isn't it? And the illusion. However, there was a flickering word "purple book" on the net, so I was alert and decided to buy a purple book.
** 2. Study with purple books ** [Purple](https://www.amazon.co.jp/%E3%82%AA%E3%83%A9%E3%82%AF%E3%83%AB%E8%AA%8D%E5% AE% 9A% E8% B3% 87% E6% A0% BC% E6% 95% 99% E7% A7% 91% E6% 9B% B8-Java% E3% 83% 97% E3% 83% AD% E3% 82% B0% E3% 83% A9% E3% 83% 9E-Gold-SE-EXAMPRESS / dp / 479814682X / ref = pd_lpo_sbs_14_t_1 / 355-7173565-4802505? _Encoding = UTF8 & psc = 1 & refRID = PK2FKVDKCFGHVC2C7FQ In order to test the power of the book, I immediately did a comprehensive problem. result···
** Miserable **
I'm done! I understand! I was reminded that this is actually a very small part. The black book and the purple book have exactly the same composition, but the problem is raised differently. I'm really glad I bought it because it became clear that I didn't understand what I was missing.
** 3. View API ** Familiar classes such as Map and List have added functions in Java8, so I read them. I'm not a genius, so I wrote each one in my notebook, but I can't remember it completely ...
** 4. Solve Oracle campaign problems ** It helped me a lot. The same content as the campaign question appeared in the exam a little. .. ..
** 5. Trial run ** As for Stream and NIO2, it's the first technology I've encountered, so anyway I did a trial run. If you try it out, things that are difficult to understand with your head will come in. If you have an environment, please come!
I was really confused ... Muzui ... The first Pearson VUE. I didn't understand and the frustration didn't stop ... Please do your best to apply with reference to this. How to apply for the Oracle Certified Java Programmer Exam and how to get a certificate / receipt
I don't think there was any strange chance, but there was a problem that I couldn't understand Japanese. I struggled. Stream, NIO2, try-with-resource, Fork / Join, localization, etc. often appeared. Such a niche There were some problems that I shouted in my heart, "I don't know the method !!"
The email will arrive in about 5 minutes. There is a link to CertView in the email, so click on it to log in to CertView. At this stage I realize I don't have an Oracle account and I hurry to create one. Perhaps because of that, I couldn't log in to CertView, and after an hour, I managed to log in and see the results. (I regret that I should have done it properly in advance ...)
The content of the exam is different between the 1Z0-813 exam and the 1Z0-809, but by studying the 1Z0-809 It was very meaningful because I was able to study new features of Java 8 and important new features before that.
I have to study Java8 ... When I was fluffy, I didn't know what to study and how to study, so I didn't study after all. I think I learned systematically through this 1Z0-813 qualification study!
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