Is Java SE8 Silver useful for Java development work? ??

Whether Java SE8 Silver is useful for business! ??

I passed Java SE 8 Silver a while ago, so I'll write down how I studied and whether it was useful for my work.

Java development experience: 4 years Study period: 2 weeks (1 hour on weekdays, 2 hours on holidays) Score: 82% (pass line 65%)

Assumed reader

--Those who are considering taking the Java SE8 Silver exam --Those who are studying Java SE8 Silver --Those who are wondering if programming qualifications are useful for their work

What is Java SE8 Silver?

The official name is "Oracle Certified Java Programmer, Silver SE 8 Certification".

The qualification evaluation purpose level is as follows (Oracle official quote)

It is a qualification for development beginners who has the basic programming knowledge required for Java application development and can perform development work under the guidance of advanced users. The purpose is to evaluate not only everyday programming skills, but also the ability to respond to situations that occur in various projects.

Is Java SE8 Silver useful for business?

I will suddenly come to a conclusion. I personally think it's very useful. First of all, there are many situations where you do not have to rely on IDE (Integrated Development Environment) error messages, and development efficiency has improved. Also, when I pointed out the review as a reviewer, I had a clear technical perspective. I think that the parts that I seemed to understand but did not understand became clearer and the range of my knowledge expanded.

ex) I didn't know that there are 3 types of exception handling, with a fluffy "exception" understanding. ⇛ It is now possible to code to separate the level of exception handling as needed.

Why i wanted to get

When I was taking an inventory of my skills, I was worried whether I could clearly say "I can do Java!" To the Java skills I have used in development. Therefore, I decided to take Java SE8 Silver mentioned above so that it can be evaluated as having a certain skill even from the perspective of a third party.

Books used for study

It is commonly known as Kuromoto. I used it because it was the best word of mouth when I looked at the passing experiences of various people. Certainly, if you thoroughly understand this book, you will definitely pass. I solved the problem repeatedly until I understood each chapter a couple of times.

Thorough capture Java SE 8 Silver problem collection 1Z0-808 correspondence

Main questions / viewpoints

I will describe the main question points. For your information You need to understand the syntax of operators, loops, etc., from Java data types, creating classes to defining methods.

Java basics

--Class declaration --How to write package import (static import) --Java execution command

java type manipulation

--Data type (primitive type) --Relationship between class and instance

By the way, I posted a table that summarizes the data types lightly on Qiita before, so for reference https://qiita.com/yutaka_oshiro/items/fa8fb01118584b9101db

Operator and judgment structure

--Increment operator and decrement operator --Logical operators, priorities --if statement --Switch statement --Ternary operator

Array

--Array initialization, declaration, generation --Multidimensional array

Loop structure

Encapsulation

--Method definition --static method

Inheritance, implementation

--Class inheritance

Exception handling

--try-catch statement, try-catch-finally statement --Checked and unchecked exceptions, errors --Exception class

New API in Java 8

--Lambda expression

Impressions about the exam

Examination procedure

The procedure for taking the exam is very troublesome. Reference site below https://qiita.com/yskuma6684/items/b8604d6e5572490a13a8

I think it is better to register in CertView so that you can see the pass immediately.

Impressions of the exam

I can assure you that you can pass Kuromoto if you understand all the explanations. The problem of the mock problem was almost the same, and there were many problems that only the variable name and the class name were changed and the positions of the options were exactly the same. Also, the exam time is two and a half hours, and there is a possibility that it will be a long time with 77 questions, so I thought it was better to sleep well. When I got off the building at the venue after the exam was over, I received an email with a pass / fail result. It is early!

If you want to learn about Java or test your skills, please take the test!

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