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Apply it on any computer, no limitation — one purchase, long-term benefit. The Oracle Java SE 8 Programmer II (1z0-809 Korean Version) exam training at ActualTestsIT: 209 practice questions for the 1z0-809 Korean exam, 365 days of updates.

Oracle 1z0-809 Korean Exam Syllabus Topics:

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

Oracle 1z0-809 Korean Exam: Standout Answers

The Oracle Java SE 8 Programmer II (1z0-809 Korean Version) blueprint spans 12 domains — including Java File I/O, Lambda Built-in Functional Interfaces, Advanced Java Class Design. The complete outline above lists every subtopic; work them from heaviest to lightest.

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Candidates must first pass Oracle Certified Associate Java SE 8 Programmer (1Z0-808). Eligibility rules change over time, so verify the current requirements on the official page (official 1z0-809 Korean exam page) before registering.

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The Oracle Java SE 8 Programmer II (1z0-809 Korean Version) is Oracle's certification exam for Java SE, at the Professional level. A compelling certification highlights you — from common to standout. Related credentials include Oracle Certified Professional, Java SE 8 Programmer.

Oracle Java SE 8 Programmer II (1z0-809 Korean Version) Sample Questions:

/Message.properties 리소스의 내용이 주어지면:
greet = 좋은 하루 보내세요!
resources/Message_de_DE.properties의 내용이 주어지면:
greet = 안녕하세요!
C:\src\App.java의 코드 조각은 다음과 같습니다.

  • A. 런타임에 java.util.MissingResourceException이 발생합니다.
  • B. 안녕하세요!
  • C. 안녕하세요!
  • D. 컴파일 오류가 발생했습니다. 컴파일이 성공적으로 이루어지도록 n1 줄을 다음과 같이 바꾸세요.
    ResourceBundle 번들 = ResourceBundle.getBundle("/resources/Message.properties", locale);
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

주어진 코드 조각:
클래스 호출자는 Callable<String> {을 구현합니다.
문자열 str;
공개 호출자(문자열 s) {this.str=s;}
공개 문자열 call() 예외 발생 { return str.concat("호출자");}
}
클래스 러너는 Runnable {을 구현합니다.
문자열 str;
공개 러너(문자열 s) {this.str=s;}
공개 무효 실행() { System.out.println(str.concat("실행자"));}
}
그리고
공개 정적 무효 주(String[] 인수) InterruptedException, ExecutionException { ExecutorService es = Executors.newFixedThreadPool(2); 미래 f1 = es.submit(새 발신자("호출")); 미래 f2 = es.submit(새로운 러너("실행")); 문자열 str1 = (문자열) f1.get(); 문자열 str2 = (문자열) f2.get();//라인 n1 System.out.println(str1+ ":" + str2);
}
결과는 무엇입니까?

  • A. 인쇄 후 프로그램 종료:Run RunnerCall Caller : Run
  • B. n1행에서 컴파일 오류가 발생합니다.
  • C. 프로그램이 다음을 인쇄합니다. Run RunnerCall Caller : null그리고 프로그램이 종료되지 않습니다.
  • D. 런타임에 실행이 발생합니다.
Reveal Solution  Discussion  0

Correct Answer: C  🗳️


결과는 무엇입니까?

  • A. 100
  • B. 7행에서 컴파일 오류가 발생합니다.
  • C. 8행에서 컴파일 오류가 발생합니다.
  • D. 15행에서 ​​컴파일 오류가 발생합니다.
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

주어진:

그리고 코드 조각:

ColorSorter 클래스의 어떤 정의가 블록 목록을 정렬합니까?

  • A.
  • B.
  • C.
  • D.
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Student 테이블의 구조가 주어졌을 때:
학생(ID INTEGER, 이름 VARCHAR)
STUDENT 테이블의 레코드가 주어지면:

주어진 코드 조각:

다음과 같이 가정합니다.
결과는 무엇입니까?

  • A. 프로그램이 Status: false를 인쇄하지만 Student 테이블의 레코드는 삭제되지 않습니다.
  • B. 런타임에 SQLException이 발생합니다.
  • C. 프로그램이 Status: false를 인쇄하고 두 개의 레코드가 Student 테이블에서 삭제됩니다.
  • D. 프로그램이 Status: true를 인쇄하고 두 개의 레코드가 Student 테이블에서 삭제됩니다.
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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