Oracle Java SE 11 Developer (1Z0-819日本語版) : 1Z0-819日本語
- Exam Code: 1Z0-819日本語
- Exam Name: Java SE 11 Developer (1Z0-819日本語版)
- Updated: Oct 23, 2026
- Q & A: 297 Questions and Answers
About Oracle Java SE 11 Developer (1Z0-819日本語版) : 1Z0-819日本語 Exam
Java SE 11 Developer (1Z0-819日本語版) pdf study material
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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:
- Use primitives and wrapper classes, including, operators, parentheses, type promotion and casting
- Use local variable type inference, including as lambda parameters
- Handle text using String and StringBuilder classes
Reference: https://education.oracle.com/java-se-11-developer/pexam_1Z0-819?intcmp=WWOUBLOGPOSTLADJAVA082913
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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:
- Create and use enumerations
- Secure resource access including filesystems, manage policies and execute privileged code
- Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
- Initialize objects and their members using instance and static initialiser statements and constructors
- Define and use fields and methods, including instance, static and overloaded methods
- Utilize polymorphism and casting to call methods, differentiate object type versus reference type
- Develop code that mitigates security threats such as denial of service, code injection, input validation and ensure data integrity
- 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
- Create and use subclasses and superclasses, including abstract classes
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How much Java SE 11 Developer Exam Number: 1Z0-819 costs
- Examination Fees: $250 USD
- Length of Exam: 85 min
- No. of Questions: 60 Questions
- Passing Score: 60% or higher
- Examination Name: Java SE 11 Developer Exam Number: 1Z0-819
- Types of questions: Performance Based Questions
What is Java SE 11 Developer Exam Number: 1Z0-819 Certification Exam and Retake policy
Oracle Cloud Certification credentials are only valid for a period of 18 months from the date you earn the credential. The certification will become inactive at the end of 18 months. However, for Oracle candidates, it is necessary to hold an active certification in order to have access to various certification benefits including, using Oracle certification logos, certificates, scoring reports, digital badges, and certification verification.
To stay current, candidates have to re-certify themselves with the latest version of the exam. Oracle Cloud Certifications include various titles with levels that are Oracle Certified Associate, Specialist, and Professional. Moreover, the Oracle Cloud Certifications are updated continuously throughout the year for keeping current with major product and service releases and re-released on an annual basis with a new title.
Oracle 1Z0-819日本語 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Generics and Collections | - Generics
|
| Topic 2: Java I/O and NIO | - File handling
|
| Topic 3: JDBC and Database Connectivity | - Database access
|
| Topic 4: Concurrency | - Multithreading
|
| Topic 5: Functional Programming | - Lambda Expressions
|
| Topic 6: Java Class Design | - Polymorphism
|
| Topic 7: Exception Handling | - Error handling in Java
|
| Topic 8: Streams API | - Stream operations
|
Oracle Java SE 11 Developer (1Z0-819日本語版) Sample Questions:
ある企業には、次のパッケージを含む Java 8 jar ファイルを使用した既存の販売アプリケーションがあります。
com.company.customer;
com.company.customer.orders;
com.company.customer.info;
com.company.sales;
com.company.sales.leads;
com.company.sales.closed;
com.company.orders;
com.company.orders.pending;
com.company.orders.shipped.
この jar ファイルを顧客、売上、注文の 3 つのモジュールにモジュール化するには、どの module-info.java が正しいでしょうか?
- A.
- B.
- C.
- D.
Correct Answer: C 🗳️
結果はどうなりましたか？
- A. 9001: java.io.FileNotFoundException: MyFile.txt-MyFile.txt
- B. 9001: アプリケーション エラー-9001-MyFile.txt
- C. 1 行目でコンパイルが失敗します。
- D. 9001: アプリケーション エラー-9001-MyFile.txt
9001: java.io.FileNotFoundException: MyFile.txt-MyFile.txt
Correct Answer: C 🗳️
Stream で forEach 操作の代わりに peek 操作を使用するのはなぜでしょうか?
- A. 現在の項目を処理し、void を返します
- B. ストリームの先頭からアイテムを削除します
- C. ストリームの末尾からアイテムを削除します
- D. 現在のアイテムを処理してストリームを返す
Correct Answer: D 🗳️
TripleThis.java の場合:
TripleThis.java をコンパイルすると、次のコンパイラ警告が表示されます。
注意: TripleThis.java はチェックされていない、または安全でない操作を使用します。
どの 2 つの置換を同時に実行すると、このコンパイラの警告が削除されますか?
- A. 12行目をpublic static <T> void printValue (Function<T, T> f, T num ) {, に置き換えます。
- B. 12 行目を public static void printValue function<Integer> f, int num) { に置き換えます。
- C. 9 行目を function<Integer>, Integer> = X -> { return (integer) x * 3; } に置き換えます。
- D. 12 行目を public static int printValue function<Integer, Integer>, f, T num { に置き換えます。
- E. 9行目をfunction<Integer> tripler = x-> - { return (Integer) X * 3 ; }に置き換えます。
Correct Answer: D,E 🗳️
アクセス修飾子に関する正しい記述はどれですか?
- A. ローカル変数は final 修飾子を使用して宣言できます。
- B. 抽象メソッドは private 修飾子を使用して宣言できます。
- C. 内部クラスは public 修飾子を使用して宣言できません。
- D. インターフェースは protected 修飾子を使用して宣言できます。
- E. インスタンス変数は、static 修飾子を使用して宣言できます。
Correct Answer: A 🗳️
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