Oracle Java SE 11 Developer (1Z0-819日本語版) : 1Z0-819日本語

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Exam Code: 1z0-819-JPN

Exam Name: Java SE 11 Developer (1Z0-819日本語版)

Updated: Oct 25, 2026

Q & A: 297 Questions and Answers

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1Z0-006 exam is for those that have completed the Database Foundations, Database Design and Programming with SQL (Oracle Academy training), Oracle Database 12c Administration Workshop or Oracle Database Introduction to SQL training. Passing this exam gives the certification credential demonstrating your understanding of the different types of database models and components. And, you will enhance knowledge of database components, concepts and design, implementation of business roles, SQL language and queries, and ERD modeling and languages to manage data and transactions.

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  • Preferably have completed all or part of my Java Masterclass here on Udemy (or another Java course)
  • Be a professional programmer with Java experience

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Oracle 1Z0-819日本語 Exam Syllabus Topics:

SectionObjectives
Java I/O and NIO- File handling
  • 1. FileReader and FileWriter
    • 2. NIO file APIs
      Generics and Collections- Generics
      • 1. Generic classes and methods
        • 2. Wildcards
          - Java Collections Framework
          • 1. List, Set, Map interfaces
            • 2. Sorting and searching
              Exception Handling- Error handling in Java
              • 1. Checked and unchecked exceptions
                • 2. Try-catch-finally blocks
                  JDBC and Database Connectivity- Database access
                  • 1. JDBC API usage
                    • 2. SQL execution from Java
                      Functional Programming- Lambda Expressions
                      • 1. Lambda syntax and usage
                        • 2. Functional interfaces
                          Concurrency- Multithreading
                          • 1. Thread lifecycle
                            • 2. Executor framework
                              Streams API- Stream operations
                              • 1. Collectors
                                • 2. Intermediate and terminal operations
                                  Java Class Design- Polymorphism
                                  • 1. Dynamic binding
                                    • 2. Method overriding
                                      - Encapsulation and Inheritance
                                      • 1. Inheritance hierarchies
                                        • 2. Class structure and modifiers

                                          Oracle Java SE 11 Developer (1Z0-819日本語版) Sample Questions:

                                          Question #1

                                          @Deprecated とマークされたクラスについて正しい記述はどれですか?

                                          • A. クラスの作成者は、いかなる形でもクラスを使用することを推奨しません。
                                          • B. 非推奨のクラスの代わりに使用できる別のクラスが常に存在します。
                                          • C. クラスは拡張できません。
                                          • D. クラスを使用すると実行時にエラーが発生することが保証されます。
                                          • E. このクラスを使用すると、Java コンパイラから警告が出されます。
                                          Reveal Solution  Discussion  0

                                          Correct Answer: A,E  🗳️

                                          Question #2

                                          組織では、クラウド顧客にmlib.jarを提供しています。mlib.jarのコードクリーンアッププロジェクトに取り組んでいる際、顧客が次のようなメソッドを使用しているのを目にしました。

                                          顧客がアクセス可能な方法の要件を満たすには、この方法にどのようなセキュリティ対策を追加する必要がありますか?

                                          • A. enableService を非公開にします。
                                          • B. new Socket への呼び出しを AccessController.doPrivileged ブロックで囲みます。
                                          • C. ソケットを開く前に、hostName および portNumber パラメータを検証するメソッドを作成します。
                                          • D.
                                          Reveal Solution  Discussion  0

                                          Correct Answer: B  🗳️

                                          Question #3

                                          有効な注釈の使用法はどれですか? (3 つ選択してください。)

                                          • A. var myString = (@NonNull String) str;
                                          • B. Function<String, String> func = (@NonNull var x) -> x.toUpperCase();
                                          • C. var obj = new @Interned MyObject();
                                          • D. 関数<String, String> func = (var @NonNull x) -> x.toUpperCase();
                                          • E. 関数<String, String> func = (@NonNull x) -> x.toUpperCase();
                                          • F. var v = "Hello" + (@Interned) "World"
                                          Reveal Solution  Discussion  0

                                          Correct Answer: C,D,E  🗳️

                                          Question #4

                                          与えられた条件:

                                          このコマンドで実行します:
                                          java メイン 1 2 3
                                          このクラスの出力は何ですか?

                                          • A. 何もない
                                          • B. コンパイルに失敗しました。
                                          • C. java.lang.ArrayIndexOutOfBoundsException がスローされます。
                                          • D. 1) 12) 23) 3
                                          • E. 1) 1つ
                                          Reveal Solution  Discussion  0

                                          Correct Answer: D  🗳️

                                          Question #5

                                          与えられた条件:

                                          正しいのは次のうちどれですか?(2つ選択してください。)

                                          • A. 出力は正確に 2 1 3 4 5 になります。
                                          • B. forEach() を forEachOrdered() に置き換えると、プログラムは 1 2 3 4 5 を出力します。
                                          • C. forEach() を forEachOrdered() に置き換えると、プログラムは 2 1 3 4 5 を出力します。
                                          • D. プログラムは 1 4 2 3 を出力しますが、順序は予測できません。
                                          • E. forEach() を forEachOrdered() に置き換えると、プログラムは 2 1 3 4 5 を出力しますが、順序は予測できません。
                                          Reveal Solution  Discussion  0

                                          Correct Answer: B,D  🗳️

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