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Oracle 1z0-809日本語 Actual Tests : Java SE 8 Programmer II (1z0-809日本語版)

1z0-809日本語 actual test

About Best Oracle 1z0-809日本語 Exam Practice Material

In 2026, failing the 1z0-809日本語 exam still means paying the registration fee all over again. A Actual4test practice package with 209 up-to-date Oracle Java SE 8 Programmer II (1z0-809日本語版) questions costs far less than a single retake.

Oracle 1z0-809日本語 Exam Overview:

Certification Vendor:Oracle
Exam Name:Java SE 8 Programmer II
Exam Number:1Z0-809
Exam Price:$245 USD
Related Certifications:Oracle Certified Professional, Java SE 8 Programmer
Certificate Validity Period:Does not expire
Exam Duration:120 minutes
Real Exam Qty:68
Passing Score:65%
Exam Format:Multiple Choice
Available Languages:Chinese Simplified, English
Sample Questions:Oracle 1z0-809日本語 Sample Questions
Exam Way:Online proctored exam or test center delivery
Pre Condition:Candidates must first pass Oracle Certified Associate Java SE 8 Programmer (1Z0-808).
Official Syllabus URL:https://education.oracle.com/java-se-8-programmer-ii/pexam_1Z0-809

Oracle 1z0-809日本語 Exam Syllabus Topics:

SectionObjectives
Topic 1: Localization- Internationalization
  • 1. Handle localization properties
  • 2. Format dates and numbers
  • 3. Use Locale and ResourceBundle
Topic 2: Building Database Applications with JDBC- Database connectivity
  • 1. Process ResultSet data
  • 2. Use JDBC drivers and connections
  • 3. Execute SQL statements
Topic 3: Java Class Design- Object-oriented principles
  • 1. Use static variables, methods, and initialization blocks
  • 2. Create singleton and immutable classes
  • 3. Implement inheritance and polymorphism
  • 4. Implement encapsulation
  • 5. Override equals, hashCode, and toString
Topic 4: Lambda Built-in Functional Interfaces- Functional programming
  • 1. Use Predicate, Consumer, Function, and Supplier
  • 2. Use UnaryOperator and BinaryOperator
  • 3. Use primitive functional interfaces
Topic 5: Java Concurrency- Multithreading
  • 1. Create and manage threads
  • 2. Use ExecutorService
  • 3. Use synchronized blocks and locks
  • 4. Use concurrent collections
Topic 6: Exceptions and Assertions- Error handling
  • 1. Use try-catch and try-with-resources
  • 2. Use assertions
  • 3. Create custom exceptions
Topic 7: Java I/O Fundamentals- Input and output
  • 1. Read and write files
  • 2. Use BufferedReader and BufferedWriter
  • 3. Use serialization
Topic 8: Java File I/O- NIO.2 API
  • 1. Read file attributes
  • 2. Use Path and Files classes
  • 3. Traverse directory structures
Topic 9: Java Stream API- Stream processing
  • 1. Collect and group stream results
  • 2. Sort and filter data using streams
  • 3. Use Optional
  • 4. Use map, flatMap, and peek
  • 5. Use findFirst, findAny, and match methods
Topic 10: Advanced Java Class Design- Advanced object-oriented features
  • 1. Develop Lambda expressions
  • 2. Use the final keyword
  • 3. Use abstract classes and interfaces
  • 4. Use enum types
  • 5. Create nested and inner classes
Topic 11: Java SE 8 Date/Time API- Date and time handling
  • 1. Use LocalDate, LocalTime, and LocalDateTime
  • 2. Format and parse date values
  • 3. Use Period and Duration
Topic 12: Generics and Collections- Collections framework
  • 1. Create and use generic classes
  • 2. Use ArrayList, TreeSet, TreeMap, and ArrayDeque
  • 3. Iterate collections with Streams and forEach
  • 4. Use Comparator and Comparable

Everything You Want to Know About the Oracle 1z0-809日本語 Exam

The 1z0-809日本語 exam (Java SE 8 Programmer II (1z0-809日本語版)) is the official Oracle exam that leads to the Java SE certification, a credential at the Professional level. Related certifications include Oracle Certified Professional, Java SE 8 Programmer. Actual4test provides 209 practice questions to help you prepare for it with confidence.

The 1z0-809日本語 exam contains 68 questions and gives you 120 minutes to finish them. Before exam day, divide the total time by the question count so you know the pace you need to keep, and flag difficult items instead of getting stuck on them. Running at least one full timed session in the Actual4test test engine is the best way to make that time pressure feel familiar.

You need 65% to pass, and the official registration fee is $245 USD. Keep in mind that a failed attempt means paying that fee in full again, so it pays to test yourself first. When your scores on the Actual4test timed practice tests stay consistently above the passing line, you are ready to book the exam.

Candidates must first pass Oracle Certified Associate Java SE 8 Programmer (1Z0-808). Requirements can change over time, so always double-check the latest eligibility rules before you register on the official Oracle exam page.

Yes. Actual4test offers a free 1z0-809日本語 PDF demo so you can check the quality of the practice questions before purchasing. After you buy, your product comes with 365 days of free updates, and if it expires you can renew the update service at a 50% discount from your member zone.

Your purchase is protected by our 100% Money Back Guarantee. If you take the corresponding 1z0-809日本語 exam within 60 days of purchase and do not pass, send us a scan of your enrollment slip and the official Score Report PDF within two days of the exam, and the full refund will be processed within seven days. The candidate name must match the payer name; exams taken within three days of purchase, free materials, and expired orders are not eligible. If you would rather not refund, you can exchange your product for two free products of equal value and keep the update service on your original purchase. Delivery itself is instant: your material is available for download and is emailed to you within one minute of payment. If nothing arrives within two hours, contact our support team. There is no limit on how many computers you may install it on.

The 1z0-809日本語 syllabus is organized into 12 exam domains. Among the first three are Java Class Design, Java Stream API, Java SE 8 Date/Time API. For the complete breakdown of topics and subtopics, see the Exam Topics section above.

Oracle Java SE 8 Programmer II (1z0-809日本語版) Sample Questions:

Question 1

与えられた:

どのオプションが失敗しますか?

A. Foo<String, Integer> mark = new Foo<Object, Object> ("Steve", 100);
B. Foo<String, String> grade = new Foo <> ("John", "A");
C. Foo<String, String> pair = Foo.<String>twice ("Hello World!");
D. Foo<Object, Object> percentage = new Foo<Object, Object>("Steve", 100);


Question 2

与えられた:
class Book {
int id;
String name;
public Book (int id, String name) {
this.id = id;
this.name = name;
}
public boolean equals (Object obj) { //line n1
boolean output = false;
Book b = (Book) obj;
if (this.id = = b.id) {
output = true;
}
return output;
}
}
and the code fragment:
Book b1 = new Book (101, "Java Programing");
Book b2 = new Book (102, "Java Programing");
System.out.println (b1.equals(b2)); //line n2
どの文が真実ですか?

A. プログラムはtrueを出力します。
B. コンパイルエラーが発生します。To ensure successful compilation, replace line n1 with:boolean equals (Book obj) {
C. プログラムはfalseを出力します。
D. A compilation error occurs. To ensure successful compilation, replace line n2 with:System.out.println (b1.equals((Object) b2));


Question 3

Given the definition of the Country class:
public class country {
public enum Continent {ASIA, EUROPE}
String name;
Continent region;
public Country (String na, Continent reg) {
name = na, region = reg;
}
public String getName () {return name;}
public Continent getRegion () {return region;}
}
and the code fragment:
List<Country> couList = Arrays.asList (
new Country ("Japan", Country.Continent.ASIA),
new Country ("Italy", Country.Continent.EUROPE),
new Country ("Germany", Country.Continent.EUROPE));
Map<Country.Continent, List<String>> regionNames = couList.stream ()
.collect(Collectors.groupingBy (Country ::getRegion,
Collectors.mapping(Country::getName, Collectors.toList()))));
System.out.println(regionNames);
What is the output?

A. {EUROPE = [Germany], EUROPE = [Italy], ASIA = [Japan]}
B. {ASIA = [Japan], EUROPE = [Italy, Germany]}
C. {EUROPE = [Germany, Italy], ASIA = [Japan]}
D. {EUROPE = [Italy, Germany], ASIA = [Japan]}


Question 4

与えられた条件:

関数インターフェースを使用してリファクタリングされたコードはどれですか?

A.

B.

C.

D.


Question 5

Given the code fragment:
public static void main (String[] args) throws IOException {
BufferedReader brCopy = null;
try (BufferedReader br = new BufferedReader (new
FileReader("employee.txt"))) { //
line n1
br.lines().forEach(c -> System.out.println(c));
brCopy = br;//line n2
}
brCopy.ready(); //line n3;
}
BufferedReaderのreadyメソッドが閉じたBufferedReaderで呼び出されたときに例外をスローし、employee.txtがアクセス可能で有効なテキストを含んでいると仮定します。
結果は何ですか?

A. 行n2でコンパイルエラーが発生します。
B. コンパイルエラーはn3行目で発生します。
C. コードは、employee.txtファイルの内容を出力し、n3行目に例外をスローします。
D. 行n1でコンパイルエラーが発生します。


Solutions:

Question 1
Answer: D
Question 2
Answer: C
Question 3
Answer: B
Question 4
Answer: D
Question 5
Answer: C

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