[Java] I fell into Java Silver (crying)

6 minute read

I took the Java Silver exam the other day.
The result is “64%” …
(Pass if 65% or more)
Whew! !! ?? Shock! !! 1% difference or Majikayo …
If you answered one more question correctly, you passed w
The examination fee is not stupid and I want to die w

I’m not so confident, but I was wondering if I could manage with 65-70%.
By the way, we
・ Early 30s
・ No Java work experience
・ Study period over 3 weeks
・ I just changed jobs from a different industry to SES
・ HTML, css, JS, PHP can be tampered with
Condition

Immediately after changing jobs, corona sickness occurred,
It seems that he usually put in a project within a few weeks after joining the company.
Closed after waiting at home for a while
Situation

I have a lot of time to study, so it ’s even more disappointing.
I thought it wasn’t suitable for this world …
I want to take it even

Some may say that the qualification itself is not worth it,
For me, I have no experience of overcoming the barrier of taking university entrance exams
I have lived almost independently of the act of “studying continuously”
At least obtained in the process of acquiring qualifications
・ Basic knowledge before work
・ Habit of continuous learning
The spirit of supplementing

Impression that the content of the test was just unpleasant.
According to the reputation, Kuromoto there were many issues that are almost as questions, while solved until every nook and corner
If you keep in mind the reasons for those correct and incorrect answers, it seems that you will accept them normally.

Then why did you fall this time? I would have to make a temporary structure and analyze it.
Cause:
Countermeasures

  1. Careless mistake:
    Read the problem carefully. In Kuromoto’s mock exam, there were one or two careless mistakes each time. The content is simple only for such problems, and the probability of making a mistake is low.

  2. The review of the weak points is sweet:
    It is a mock exam that you can roughly grasp the structure and pass, and it is easy to answer correctly because you are used to the problem.
    Repeat to improve understanding.

Example) Problems such as nesting for statements in a multidimensional array

arrayRoup.java



public class Main {
  public static void main(String[] args) {
    int[] array = new int[][] { {1, 2}, {2, 3, 4} };
    int[] total = 0;
    for(int i = 0; i < array.length; i++;) {
      for (  ?  ) {  // insert code
         total += array[i][j];
      }
    }
    System.out.println(total);
  }
}
//How to display "10" on the console? What code to put in

  1. The way of studying is wrong in the first place:
    Books used
    ・ Purple book
    The textbook existence, each function and test range are briefly described.
<a href="https://hb .afl.rakuten.co.jp / ichiba / 1aecd7df.780bbf06.1aecd7e0.a0859005 /? pc = https% 3A% 2F% 2Fitem.rakuten.co.jp% 2Fbook% 2F13678410% 2F & link_type = picttext & ut = eyJwYWdlIjoiaXRlbSIsInR5cGUiOiJwaWN0dGV4dCIsInNpemUiOiI4MHg4MCIsIm5hbSI6MSwibmFtcCI6InJpZ2h0IiwiY29tIjoxLCJjb21wIjoiZG93biIsInByaWNlIjoxLCJib3IiOjEsImNvbCI6MSwiYmJ0biI6MSwicHJvZCI6MH0% 3D "target = "_blank" rel = "nofollow sponsored noopener" style = "word-wrap: break-word;"> <img src = "https://hbb.afl.rakuten.co.jp/hgb/1aecd7df.780bbf06.1aecd7e0. a0859005 /? me_id = 1213310 & item_id = 17766326 & pc = https% 3A% 2F% 2Fthumbnail.image.rakuten.co.jp% 2F% 400_mall% 2Fbook% 2Fcabinet% 2F2739% 2F9784798142739.jpg% 3F_ex% 3D80x80 & s = 80 0 "style =" margin: 2px "alt =" [Regarding the product price, the information has changed at the time when the link was created and at the moment. There may be cases. ] "title =" [Regarding product prices, information may have changed at the time the link was created and at this time. ] "> </a>

<a href="https://hb.afl.rakuten.co.jp/ichiba/1aecd7df.780bbf06.1aecd7e0.a0859005/? pc = https% 3A% 2F% 2Fitem.rakuten.co.jp% 2Fbook% 2F13678410% 2F & link_type = picttext & ut = eyJwYWdlIjoiaXRlbSIsInR5cGUiOiJwaWN0dGV4dCIsInNpemUiOiI4MHg4MCIsIm5hbSI6MSwibmFtcCI6InJpZ2h0IiwiY29tIjoxLCJjb21wIjoiZG93biIsInByaWNlIjoxLCJib3IiOjEsImNvbCI6MSwiYmJ0biI6MSwicHJvZCI6MH0% 3D "target =" _ blank "rel =" nofollow sponsored noopener "style =" word-wrap: break-word ; "> Java Programmer Silver SE 8 Exam Number: 1Z0-808 (Oracle Certification Textbook) [Michiko Yamamoto (Programming)] </a>
Price: 4180 yen (tax included, free shipping) (as of 8/7/2020)


・ Kuromoto
The strongest guy who wasn’t told.
Others have told me to do this n billion times.
In particular, you should deepen your understanding of the structure by repeating the places where the correct answer rate is low.
I found the wording of the commentary a little difficult for beginners like myself.

<a href="https: // hb .afl.rakuten.co.jp / ichiba / 1aecd7df.780bbf06.1aecd7e0.a0859005 /? pc = https% 3A% 2F% 2Fitem.rakuten.co.jp% 2Fbook% 2F13532355% 2F & link_type = picttext & ut = eyJwYWdlIjoiaXRlbSIsInR5cGUiOiJwaWN0dGV4dCIsInNpemUiOiI4MHg4MCIsIm5hbSI6MSwibmFtcCI6InJpZ2h0IiwiY29tIjoxLCJjb21wIjoiZG93biIsInByaWNlIjoxLCJib3IiOjEsImNvbCI6MSwiYmJ0biI6MSwicHJvZCI6MH0% 3D "target = "_blank" rel = "nofollow sponsored noopener" style = "word-wrap: break-word;"> <img src = "https://hbb.afl.rakuten.co.jp/hgb/1aecd7df.780bbf06.1aecd7e0. a0859005 /? me_id = 1213310 & item_id = 17733587 & pc = https% 3A% 2F% 2Fthumbnail.image.rakuten.co.jp% 2F% 400_mall% 2Fbook% 2Fcabinet% 2F9939% 2F9784844339939.jpg% 3F_ex% 3D80x80 & s = 80 0 "style =" margin: 2px "alt =" [Regarding the product price, the information has changed at the time when the link was created and at the moment. There may be cases. ] "title =" [Regarding product prices, information may have changed at the time the link was created and at this time. ] "> </a>

<a href="https://hb.afl.rakuten.co.jp/ichiba/1aecd7df.780bbf06.1aecd7e0.a0859005/? pc = https% 3A% 2F% 2Fitem.rakuten.co.jp% 2Fbook% 2F13532355% 2F & link_type = picttext & ut = eyJwYWdlIjoiaXRlbSIsInR5cGUiOiJwaWN0dGV4dCIsInNpemUiOiI4MHg4MCIsIm5hbSI6MSwibmFtcCI6InJpZ2h0IiwiY29tIjoxLCJjb21wIjoiZG93biIsInByaWNlIjoxLCJib3IiOjEsImNvbCI6MSwiYmJ0biI6MSwicHJvZCI6MH0% 3D "target =" _ blank "rel =" nofollow sponsored noopener "style =" word-wrap: break-word ; "> Thorough capture Java SE 8 Silver" 1Z0-808 "corresponding question collection Exam number 1Z0-808 [Sumito Shiga] </a>
Price: 3520 yen (tax included, free shipping) (as of 8/7/2020)


・ Introduction to Java that you can understand clearly
Anyway, it’s easy to understand. I read a lot including other languages, but this series is good for beginners
Super important
・ Inheritance
・ Polymorphism
·Encapsulation
It stands at the entrance of “object-oriented” in the first place.
I was impressed with this “object-oriented” for small fish like myself.
By the way, the lambda expression is not here Practice

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I intend to study as it is.
However, there was not enough output.
Or rather, I used too much paper and pen in the classroom

If there is information that I studied (updated) that day, I should send it, so
Assuming a beginner like yourself as a virtual target, write a text that will explain
Just should be different
Input → Output → Sublimation
Knowledge “crystallizes” by repeating this
Should be

I just didn’t practice what was said to be rotten in self-development books

I change what I study in a cycle of about 2 to 3 weeks
SQL failed (Bronz basics, which seemed to be less difficult, were abolished, so take the 12c basics)

Java failed

Lpic

CCNA

Feeling
Spec too low ww

It doesn’t seem to be a helpful article
Let’s use it as a memorandum and growth record

I want to take Java silver again within the next week and pass it

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