- Exam Code: 1Z0-819
- Exam Name: Java SE 11 Developer (1Z0-819日本語版)
- Certification Provider: Oracle
- Corresponding Certification:Oracle Java SE
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How to book the Java SE 11 Developer Exam Number: 1Z0-819
You register with an Oracle partner pearsonvue.com, tie your Oracle account, choose whether you want to pass in the center or from home. If you choose the option from home, you will be followed through the camera and microphone throughout the exam, there should be no one in the room, you can not talk to anyone and look only at the screen, the Internet must be stable, without troubles, otherwise, the result will be canceled.
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Average Salary of Java SE 11 Developer Exam Number: 1Z0-819 Certified Professionals
The average salary is between $71k and $103k.
Reference: https://education.oracle.com/java-se-11-developer/pexam_1Z0-819?intcmp=WWOUBLOGPOSTLADJAVA082913
Oracle 1Z0-819日本語 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: JDBC and Database Connectivity | - Database access
|
| Topic 2: Streams API | - Stream operations
|
| Topic 3: Concurrency | - Multithreading
|
| Topic 4: Generics and Collections | - Generics
|
| Topic 5: Exception Handling | - Error handling in Java
|
| Topic 6: Java Class Design | - Encapsulation and Inheritance
|
| Topic 7: Java I/O and NIO | - File handling
|
| Topic 8: Functional Programming | - Lambda Expressions
|
Oracle Java SE 11 Developer (1Z0-819日本語版) Sample Questions:
次のメソッド宣言を考えてみましょう。
A) 「セッション認証の設定」+ ユーザー
B) 「セッション認証の設定」 + stmt.enquoteIdentifier(user)
<EXPRESSION> の正しい置き換えは A と B のどちらですか。また、その理由は何ですか。
- A. B、呼び出しコードによって提供されるすべての値は引用符で囲む必要があるため。
- B. A、識別子を引用符で囲む必要がないためです。
- C. A と B は機能的に同等です。
- D. B、呼び出しコードによって提供された値を引用符で囲むことで SQL インジェクションを防ぐことができるためです。
- E. A、呼び出しコードによって提供されたユーザーの値をそのまま送信するためです。
Correct Answer: E 🗳️
与えられた条件:
コンパイルから警告を削除するにはどのアノテーションを使用する必要がありますか?
- A. mainメソッドとprintメソッドに@SuppressWarningsを設定します
- B. mainメソッドに@SuppressWarnings("unchecked")、printメソッドに@SafeVarargs
- C. mainメソッドとprintメソッドに@SuppressWarnings("all")を設定します
- D. mainメソッドに@SuppressWarnings("rawtypes")、printメソッドに@SafeVarargs
Correct Answer: B 🗳️
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このコードをコンパイルするには、3 行目に独立して挿入されたどの 2 つのステートメントを使用しますか?
- A. 新しい House <Petdog> () を返します。
- B. 新しい House<Dog> () を返します。
- C. 新しい House<admin1>() を返します。
- D. 新しい House<A> () を返します。
- E. 新しい House<?>() を返します。
Correct Answer: B,C 🗳️
与えられた条件:
プレイヤーのスコアの平均を計算します。
1 行目に挿入されたどのステートメントがこれを実現しますか?
- A. players.stream().map(a -> a.score).average();
- B. players.stream().mapToInt(a -> a.score).average().orElse(0.0);
- C. players.stream().average().orElse(0.0);
- D. players.stream().mapToDouble(a -> a.score).average();
Correct Answer: B 🗳️
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