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

  • Exam Code: 1Z0-819日本語
  • Exam Name: Java SE 11 Developer (1Z0-819日本語版)
  • Updated: Nov 02, 2026
  • Q & A: 297 Questions and Answers

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About Oracle 1Z0-819日本語 Exam

Understanding functional and technical aspects of Java SE 11 Developer Exam Number: 1Z0-819

The following will be discussed in the ORACLE 1Z0-006 exam dumps:

  • Handle text using String and StringBuilder classes
  • Use primitives and wrapper classes, including, operators, parentheses, type promotion and casting
  • Use local variable type inference, including as lambda parameters

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Understanding functional and technical aspects of Java SE 11 Developer Exam Number: 1Z0-819

The following will be discussed in the ORACLE 1Z0-006 exam dumps pdf:

  • Create worker threads using Runnable and Callable, and manage concurrency using an ExecutorService and java.util.concurrent API
  • Perform decomposition and reduction, including grouping and partitioning on sequential and parallel streams
  • Sort collections and arrays using Comparator and Comparable interfaces
  • Use Java Streams to filter, transform and process data
  • Develop thread-safe code, using different locking mechanisms and java.util.concurrent API
  • Use a Java array and List, Set, Map and Deque collections, including convenience methods
  • Implement functional interfaces using lambda expressions, including interfaces from the java.util.function package
  • Use generics, including wildcards

Reference: https://education.oracle.com/java-se-11-developer/pexam_1Z0-819?intcmp=WWOUBLOGPOSTLADJAVA082913

Understanding functional and technical aspects of Java SE 11 Developer Exam Number: 1Z0-819

The following will be discussed in the ORACLE 1Z0-006 exam dumps:

  • Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
  • Declare and instantiate Java objects including nested class objects, and explain objects' - lifecycles (including creation, dereferencing by reassignment, and garbage collection)
  • Understand variable scopes, apply encapsulation and make objects immutable
  • Develop code that mitigates security threats such as denial of service, code injection, input validation and ensure data integrity
  • Define and use fields and methods, including instance, static and overloaded methods
  • Secure resource access including filesystems, manage policies and execute privileged code
  • Initialize objects and their members using instance and static initialiser statements and constructors
  • Create and use subclasses and superclasses, including abstract classes
  • Utilize polymorphism and casting to call methods, differentiate object type versus reference type
  • Create and use enumerations

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Oracle 1Z0-819日本語 Exam Syllabus Topics:

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

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

                                          Question #1

                                          与えられた条件:

                                          Point クラスをコンパイルする JsonField アノテーションの正しい定義は何ですか?

                                          • A.
                                          • B.
                                          • C.
                                          Reveal Solution  Discussion  0

                                          Correct Answer: C  🗳️

                                          Question #2

                                          次のコードフラグメントがあるとします:

                                          結果はどうなりましたか?

                                          • A. 1
                                          • B. コンパイルは行で失敗します
                                          • C. コンパイルは 16 行目で失敗します。
                                          • D. 10
                                          • E. コンパイルは 13 行目で失敗します。
                                          Reveal Solution  Discussion  0

                                          Correct Answer: D  🗳️

                                          Question #3

                                          与えられた条件:

                                          これらのオブジェクトの安全なシリアル化はどれですか? (2 つ選択してください。)

                                          • A. インスタンスをシリアル プロキシに置き換えるには、writeReplace ではなく readResolve のみを実装します。
                                          • B. フィールドを一時的として宣言します。
                                          • C. インスタンスをシリアル プロキシに置き換えるには、readResolve ではなく writeReplace のみを実装します。
                                          • D. serialPersistentFields 配列フィールドを定義します。
                                          • E. クラスを抽象化します。
                                          Reveal Solution  Discussion  0

                                          Correct Answer: A,D  🗳️

                                          Question #4

                                          次のコードフラグメントがあるとします:

                                          結果はどうなりましたか?

                                          • A. 2 4 6 8 10
                                          • B. 1 3 5 7 9
                                          • C. 2 4 6 8
                                          • D. 1 3 5 7 9 11
                                          Reveal Solution  Discussion  0

                                          Correct Answer: B  🗳️

                                          Question #5

                                          正しい var 宣言はどれですか? (2 つ選択してください。)

                                          • A. var names = new ArrayList<>();
                                          • B. var var = "hello";
                                          • C. ここで y = null;
                                          • D. var _ = 100;
                                          • E. 変数 a;
                                          Reveal Solution  Discussion  0

                                          Correct Answer: A,B  🗳️

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