Exam Name: Java SE 11 Developer (1Z0-819日本語版)
Certification Provider: Oracle
Corresponding Certification: Oracle Java SE
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Timed tests, performance marking, mistakes pointed out — really like the real test. The Oracle Java SE 11 Developer (1Z0-819日本語版) APP engine at Actual4dump: 297 practice questions for the 1Z0-819日本語 exam in 2026.
Oracle 1Z0-819日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Secure Coding in Java SE Application | 5% | - Secure sensitive data - Validate user input - Prevent Denial of Service (DoS) attacks - Prevent SQL injection and other attacks |
| Topic 2: Database Applications with JDBC | 5% | - Describe the advantages of using a connection pool - Execute queries and process results - Connect to a database using JDBC - Use parameterized queries |
| Topic 3: Annotations | 5% | - Describe the purpose of annotations - Create custom annotations - Apply standard annotations to classes and methods |
| Topic 4: Concurrency | 10% | - Use ExecutorService to concurrently execute tasks - Use parallel streams to improve performance - Identify potential threading problems - Create worker threads using Runnable and Thread objects - Use java.util.concurrent atomic classes and ForkJoinPool - Use synchronized blocks and the volatile keyword |
| Topic 5: Working with Java data types | 12% | - Differentiate between object reference variables and primitive variables - Read or write to object fields - Manipulate data using the StringBuilder class and its methods - Call methods on objects - Create and manipulate strings - Declare and initialize variables - Explain an object's lifecycle (creation, dereferencing via garbage collection) |
| Topic 6: Working with Java OOP | 15% | - Implement polymorphism - Apply the final keyword to classes, methods, and fields - Create inner classes and use them within other classes - Implement encapsulation - Use abstract classes and interfaces - Implement inheritance - Apply the static keyword to methods and fields |
| Topic 7: Controlling Program Flow | 10% | - Use Java control statements - Use if and if/else statements - Use for, while, and do/while loops - Use break and continue statements - Use switch statements |
| Topic 8: Working with Streams and Lambda expressions | 13% | - Use functional interfaces with lambda expressions - Describe the Stream interface and pipeline - Filter a collection using lambda expressions - Use method references with streams - Use the Stream API to perform terminal operations - Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods |
| Topic 9: Working with Arrays and Collections | 8% | - Sort elements in a collection - Use generic types and diamond operator - Create a list, set, map, or queue collection - Search for elements in a collection - Iterate through a collection - Filter a collection using lambda expressions |
| Topic 10: Exception Handling and Localization | 10% | - Use standard exception classes - Use assertions - Describe the advantages of exception handling - Use resource bundles and locale classes for internationalization - Create try-catch blocks and understand exception propagation - Create and throw custom exceptions |
| Topic 11: Java Platform Module System | 10% | - Explain the default modules and class path - Declare module dependencies - Use jdeps to determine dependencies - Migrate applications to use modules - Explain the concept of module exports and requires - Deploy and execute modules |
| Topic 12: I/O (Fundamentals and NIO2) | 7% | - Use Stream API with files - Use NIO2 API to work with file systems and file attributes - Read and write console and file input/output using Java I/O system - Use Path interface to manipulate file paths |
Oracle Java SE 11 Developer (1Z0-819日本語版) Exam FAQ — Worry-Free Answers
The Oracle Java SE 11 Developer (1Z0-819日本語版) is Oracle's certification exam for Oracle Java SE, at the Professional level. It's demanding enough to intimidate — timed practice is the cure. Related credentials include Oracle Certified Professional: Java SE 11 Developer.
90 minutes for 80 questions. The Actual4dump APP engine imitates the real test — set timed exams, mark performance, point out mistakes — so exam day feels rehearsed.
The Oracle Java SE 11 Developer (1Z0-819日本語版) blueprint spans 12 domains — including Working with Java OOP (15%), Working with Arrays and Collections (8%), Exception Handling and Localization (10%). The complete outline above lists every subtopic; our IT staff keep the material aligned daily.
Oracle recommends but does not require candidates to first obtain the Oracle Certified Professional: Java SE 11 Programmer I (1Z0-815) certification. However, 1Z0-819 can be taken directly without 1Z0-815. Eligibility rules change over time, so verify the current requirements on the official page (official 1Z0-819日本語 exam page) before registering.
$245 USD per attempt, 68% to pass. Retakes cost the full fee — practice whenever you want with the 297 practice questions for the 1Z0-819日本語 exam at Actual4dump.
Soon after payment you receive the Oracle Java SE 11 Developer (1Z0-819日本語版) material by automatic email — about a minute, with Credit Card payment and a strict information system keeping money and data safe; our 7*24 service replies within 2 hours, even on official holidays. If you fail the corresponding 1Z0-819日本語 exam within 60 days of purchase, we refund in full: send a scanned enrollment slip plus the official Score Report PDF within 2 days of the exam, processed within 7 days. Excluded: exams within 3 days of purchase, candidate names that don't match the payer, and free or expired products. Or exchange for two equal-value products free.
Yes — download the free Oracle Java SE 11 Developer (1Z0-819日本語版) demo and feel the engine before paying. Purchases include 365 days of free updates by email; renew afterward at 50% off.
Oracle Java SE 11 Developer (1Z0-819日本語版) Sample Questions:
与えられた条件:
var fruits = List.of("リンゴ", "オレンジ", "バナナ", "レモン");
文字 n を含む最初の要素を調べたいのですが、どの文でこれを実行できますか？
- A. fruits.stream().filter(f -> f.contains("n")).forEachOrdered(System.out::print);
- B. 文字列結果 = fruits.stream().filter(f -> f.contains("n")).findAny();
- C. オプション<String> result = fruits.stream().filter(f -> f.contains ("n")).findFirst();
- D. オプション<String> result = fruits.stream().anyMatch(f -> f.contains("n"));
Correct Answer: A 🗳️
Explanation: Only visible for Actual4dump 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 4 6 8
- B. 1 3 5 7 9 11
- C. 2 4 6 B 10
- D. 13 5 7 9
Correct Answer: B 🗳️
与えられた条件:
そしてコマンド:
これらのコマンドを実行するとどのような結果になりますか?
- A.
- B.
- C.
- D.
Correct Answer: A 🗳️
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. 12
- B. 123
- C. 23
- D. 13
Correct Answer: C 🗳️
Explanation: Only visible for Actual4dump members. You can sign-up / login (it's free).
与えられた条件:
ラムダ式で使用できるインターフェースはどれですか? (2 つ選択してください。)
- A. MyInterface1
- B. MyInterface4
- C. MyInterface2
- D. MyInterface3
- E. MyInterface5
Correct Answer: C,E 🗳️
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