- 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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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:
- Implement serialization and deserialization techniques on Java objects
- Create and use subclasses and superclasses, including abstract classes
- Initialize objects and their members using instance and static initialiser statements and constructors
- Declare and instantiate Java objects including nested class objects, and explain objects' lifecycles (including creation, dereferencing by reassignment, and garbage collection)
- Create and use enumerations
- Define and use fields and methods, including instance, static and overloaded methods
- Handle file system objects using java.nio.file API
- Utilize polymorphism and casting to call methods, differentiate object type versus reference type
- Declare, use, and expose modules, including the use of services
- Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
- Deploy and execute modular applications, including automatic modules
- Connect to and perform database SQL operations, process query results using JDBC API Annotations
- Create, apply, and process annotations
- Read and write console and file data using I/O Streams
- Understand variable scopes, apply encapsulation and make objects immutable
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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:
- 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
The benefit in Obtaining the 1Z0-819 Exam Certification
- Java SE 11 Developer Exam provides practical experience to candidates from all the aspects to be a proficient worker in the organization
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Reference: https://education.oracle.com/java-se-11-developer/pexam_1Z0-819?intcmp=WWOUBLOGPOSTLADJAVA082913
How much Java SE 11 Developer Exam Number: 1Z0-819 costs
- Passing Score: 60% or higher
- Examination Name: Java SE 11 Developer Exam Number: 1Z0-819
- Types of questions: Performance Based Questions
- Examination Fees: $250 USD
- Length of Exam: 85 min
- No. of Questions: 60 Questions
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Oracle 1Z0-819日本語 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| JDBC and Database Connectivity | - Database access
|
| Streams API | - Stream operations
|
| Concurrency | - Multithreading
|
| Java Class Design | - Encapsulation and Inheritance
|
| Exception Handling | - Error handling in Java
|
| Generics and Collections | - Generics
|
| Functional Programming | - Lambda Expressions
|
| Java I/O and NIO | - File handling
|
Oracle Java SE 11 Developer (1Z0-819日本語版) Sample Questions:
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.
Correct Answer: B 🗳️
どのコードが正しいですか?
- A. 実行可能 r = "Message" -> System.out.println();
- B. 実行可能 r = () -> {System.out.println("Message");};
- C. 実行可能 r = {System.out.println("Message")};
- D. 実行可能 r = () -> System.out::print;
- E. 実行可能 r = -> System.out.println("Message");
Correct Answer: B 🗳️
次のコードフラグメントがあるとします:
パス currentFile = Paths.get("/scratch/exam/temp.txt");
パス outputFile = Paths get("/scratch/exam/new.txt");
パスディレクトリ = Paths.get("/scratch/");
Files.copy(現在のファイル、出力ファイル);
Files.copy(出力ファイル、ディレクトリ);
Files.delete (出力ファイル);
/scratch/exam/temp.txt ファイルは存在します。/scratch/exam/new.txt および /scratch/new.txt ファイルは存在しません。
結果はどうなりましたか？
- A. /scratch/exam/new.txt のコピーが /scratch ディレクトリに存在し、/scratch/exam/new.txt は削除されます。
- B. プログラムは NoSuchFileException をスローします。
- C. プログラムは FileaAlreadyExistsException をスローします。
- D. /scratch/exam/new.txt と /scratch/new.txt が削除されます。
Correct Answer: B 🗳️
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与えられた条件:
jdeps -jdkinternals C:\workspace4\SimpleSecurity\jar\classes.jar
期待される出力を説明するものはどれですか?
- A. jdeps は、-jdkinternals オプションをコンソールに出力するために -summary または -verbose オプションのいずれかが必要であることを示すエラー メッセージを出力します。
- B. jdeps は、参照されているすべての JDK 内部 API のモジュール依存関係とパッケージ名を一覧表示します。見つかった場合は、代替案がコンソールに出力されます。
- C. -jdkinternals オプションは、.jar 内のすべてのクラスを分析し、すべてのクラス レベルの依存関係を出力します。
- D. -jdkinternals オプションは、.jar 内のすべてのクラスを分析し、JDK 内部 API へのクラスレベルの依存関係を検索します。依存関係が見つかった場合は、結果と代替案がコンソールに出力されます。
Correct Answer: D 🗳️
Explanation: Only visible for ITPassLeader members. You can sign-up / login (it's free).
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. 2：3
- B. 3 : 0
- C. 2 : -1
- D. -1 : 2
Correct Answer: C 🗳️
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