Try Oracle : 1z0-809日本語 valid & accurate questions and answers
Last Updated: Oct 13, 2026
No. of Questions: 209 Questions & Answers with Testing Engine
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Oracle 1z0-809日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Concurrency | 12% | - Use Executors, Callable, Future - Control thread lifecycle and synchronization - Use java.util.concurrent components - Create threads: Thread class, Runnable, ExecutorService |
| Topic 2: Localization | 5% | - Use Locale class - Work with resource bundles - Format numbers, dates, messages |
| Topic 3: Java SE 8 Date/Time API | 7% | - Work with Period, Duration, time zones - Format and parse dates/times - Use LocalDate, LocalTime, LocalDateTime, Instant |
| Topic 4: Generics and Collections | 15% | - Sort and search collections - Use generic classes, interfaces, and methods - Analyze type safety and type erasure - Use Collections Framework: List, Set, Map, Queue |
| Topic 5: Java Class Design | 15% | - Override hashCode, equals, and toString methods - Create singleton and immutable classes - Implement encapsulation - Implement polymorphism - Implement inheritance including visibility modifiers and composition - Use static keyword in blocks, variables, methods, classes |
| Topic 6: Java Stream API | 15% | - Describe Stream interface and pipeline - Filter, map, and process streams - Use terminal operations: collect, reduce, count - Work with Optional class |
| Topic 7: Advanced Java Class Design | 10% | - Use abstract classes and methods - Create inner classes: static, local, nested, anonymous - Use enumerated types - Use final keyword |
| Topic 8: Lambda Expressions and Functional Interfaces | 15% | - Use method references - Use primitive and binary variants of functional interfaces - Create and use lambda expressions - Use built-in functional interfaces: Predicate, Consumer, Function, Supplier |
| Topic 9: Java I/O and NIO.2 | 8% | - Stream operations on files - Read/write with java.io API - Use Path, Files, FileSystem API |
| Topic 10: Exceptions and Assertions | 8% | - Use try-catch, multi-catch, finally - Use assertions - Create custom exceptions - Use try-with-resources |
| Topic 11: JDBC | 5% | - Process resultsets - Connect to database - Execute queries and updates |
Your Oracle Java SE 8 Programmer II (1z0-809日本語版) Questions, Answered
Registration for the Oracle Java SE 8 Programmer II (1z0-809日本語版) goes through the official channels listed here:
As for the format, the 1z0-809日本語 exam is delivered Online proctored or onsite at Pearson VUE test centers — pick whichever fits your situation when you schedule.
The official Oracle Java SE 8 Programmer II (1z0-809日本語版) blueprint is divided into 11 domains, led by Exceptions and Assertions (8%), Advanced Java Class Design (10%), and Concurrency (12%). The full domain-by-domain breakdown is in the syllabus section above — that is the checklist your study plan should follow.
The passing score for the 1z0-809日本語 exam is 65%, and registering officially costs USD $245. That fee buys exactly one attempt — if you fall short, the retake is charged in full again, no discount for a second try. The practical move is to measure yourself first: drill the 209 practice questions at Exams-boost under timed conditions until your mock scores clear the bar with room to spare, then book your seat.
You can. Exams-boost publishes a free PDF demo of the 1z0-809日本語 practice questions — download it, work through it, and decide on evidence rather than promises. Once you own the full product, 365 days of free updates are included, and an expired product can have its update service renewed at a 50% discount from your member zone.
The 1z0-809日本語 exam — officially the Java SE 8 Programmer II (1z0-809日本語版) — is how Oracle verifies that you can apply its technologies in real working scenarios, and passing it earns you the Oracle Certified Professional, Java SE 8 Programmer certification, a credential at the Professional level. Employers recognize it because it is vendor-issued and skills-based. Candidates often continue toward related credentials such as Oracle Certified Associate, Java SE 8 Programmer once this one is in hand.
Yes — Oracle lists these training options for the Oracle Java SE 8 Programmer II (1z0-809日本語版):
Courseware teaches the concepts; repetition makes them exam-proof. Combine whichever course you choose with the 209 practice questions from Exams-boost and you cover both halves of preparation.
You will face 68 questions within 120 minutes on the 1z0-809日本語 exam. Do the math once and the lesson is clear: dwell too long on a hard item and the clock eats your easy points later. The fix is rehearsal, not luck — take full-length timed mocks in the Exams-boost desktop or online test engine until pacing becomes automatic, and learn to flag a question, move on, and return with fresh eyes.
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Must pass 1Z0-808 (Java SE 8 Programmer I) to earn the certification
Vendor policies shift from time to time, so treat this as your starting point and verify the current criteria on the official Oracle exam page before you schedule anything.
Oracle Java SE 8 Programmer II (1z0-809日本語版) Sample Questions:
コードの断片を考えると：
結果は何ですか？
- A. A compilation error occurs at line n2.
- B. A compilation error occurs because the IOException isn't declared to be thrown or caught?
- C. A compilation error occurs at line n1.
- D. The code reads the password without echoing characters on the console.
Correct Answer: C 🗳️
ベンダーは、どの3つのオブジェクトに対してJDBCドライバーの実装を提供する必要がありますか？
- A. Connection
- B. Time
- C. Statement
- D. DriverManager
- E. ResultSet
- F. SQLException
- G. Date
Correct Answer: A,C,E 🗳️
Explanation: Only visible for Exams-boost members. You can sign-up / login (it's free).
Given:
interface Doable {
public void doSomething (String s);
}
Which two class definitions compile?
- A. public class Action implements Doable {
public void doSomething(Integer i) { }
public String doThis(Integer j) { }
} - B. public abstract class Work implements Doable { public abstract void doSomething(String s) { } public void doYourThing(Boolean b) { }
} - C. public class Job implements Doable {
public void doSomething(Integer i) { }
} - D. public abstract class Task implements Doable { public void doSomethingElse(String s) { }
} - E. public class Do implements Doable {
public void doSomething(Integer i) { }
public void doSomething(String s) { }
public void doThat (String s) { }
}
Correct Answer: D,E 🗳️
次のコードフラグメントを考えてみましょう:
List<String> empDetails = Arrays.asList("100, Robin, HR",
「200、メアリー、管理サービス」
「101、ピーター、HR」);
empDetails.stream()
.filter(s->s.contains("1"))
.sorted()
.forEach(System.out::println); //行n1
結果はどうなりましたか？
- A. 100、ロビン、HR101、ピーター、HR200、メアリー、AdminServices
- B. 100、ロビン、HR200、メアリー、AdminServices101、ピーター、HR
- C. 100、ロビン、HR101、ピーター、HR
- D. E. 行 n1 でコンパイル エラーが発生します。
Correct Answer: C 🗳️
コードの断片を考えると：
class Employee {
Optional<Address> address;
Employee (Optional<Address> address) {
this.address = address;
}
public Optional<Address> getAddress() { return address; }
}
class Address {
String city = "New York";
public String getCity { return city: }
public String toString() {
return city;
}
}
and
Address address = null;
Optional<Address> addrs1 = Optional.ofNullable (address);
Employee e1 = new Employee (addrs1);
String eAddress = (addrs1.isPresent()) ? addrs1.get().getCity() : "City Not available"; What is the result?
- A. New York
- B. null
- C. A NoSuchElementException is thrown at run time.
- D. City Not available
Correct Answer: D 🗳️
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