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

  • Exam Code: 1z0-809 Korean
  • Exam Name: Java SE 8 Programmer II (1z0-809 Korean Version)
  • Updated: Aug 02, 2026   Q&As: 209 Questions and Answers

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About Oracle 1z0-809 Korean Exam

What is the duration of the 1Z0-809 Exam
  • Length of Examination: 150 minutes
  • Passing Score: 65%
  • Number of Questions: 85
  • Format: Multiple choices, multiple answers

Reference: https://education.oracle.com/pls/web_prod-plq-dad/db_pages.getpage?page_id=5001&get_params=p_exam_id:1Z0-809

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Given that this exam is at the professional level of certification, candidates have a large amount of work to do. Therefore, the first thing that is recommended is to thoroughly review the complete list of topics available on the official exam page, which includes:
  • Java Concurrency. The candidates must be able to create worker threads, as well as to use parallel Fork/Join Framework and parallel Streams.
  • Exceptions and Assertions. In other words, how to use try-catch and throw statements, alongside creating custom exceptions and Auto-closeable resources.
  • Stream API. It means the code development that uses optional class, Stream data, and calculation methods in addition to sorting a collection using Stream API.
  • NIO.2, Path Interface, and Files Class.
  • Localization. In particular how to read and set the locale by using the Locale object, to create and read a Properties file, and to build a recourse bundle for each locale.
  • Advanced Class Design. Specifically, candidates must demonstrate skills in how to implement encapsulation, polymorphism, and inheritance.
  • Generics and Collections. This allows the candidate to create and use a generic class as well as ArrayList, TreeSet, TreeMap, and ArrayDeque objects.
  • I/O Fundamentals. It means the skill of reading and writing data from the console.

To apply for this Oracle certification test, you should first pay $245 for a voucher. After that, go to Pearson VUE and log into your account. Enter the exam code, which should be 1Z0-809, and follow the instructions that will pop up.

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Oracle 1z0-809 Korean Exam Syllabus Topics:
SectionWeightObjectives
Generics and Collections15%- Sort and search collections
- Use Collections Framework: List, Set, Map, Queue
- Analyze type safety and type erasure
- Use generic classes, interfaces, and methods
Advanced Java Class Design10%- Use abstract classes and methods
- Use enumerated types
- Use final keyword
- Create inner classes: static, local, nested, anonymous
Java I/O and NIO.28%- Read/write with java.io API
- Stream operations on files
- Use Path, Files, FileSystem API
Localization5%- Work with resource bundles
- Format numbers, dates, messages
- Use Locale class
Java SE 8 Date/Time API7%- Format and parse dates/times
- Work with Period, Duration, time zones
- Use LocalDate, LocalTime, LocalDateTime, Instant
Concurrency12%- Control thread lifecycle and synchronization
- Use Executors, Callable, Future
- Create threads: Thread class, Runnable, ExecutorService
- Use java.util.concurrent components
Java Stream API15%- Filter, map, and process streams
- Work with Optional class
- Use terminal operations: collect, reduce, count
- Describe Stream interface and pipeline
JDBC5%- Connect to database
- Execute queries and updates
- Process resultsets
Exceptions and Assertions8%- Use try-with-resources
- Use assertions
- Use try-catch, multi-catch, finally
- Create custom exceptions
Lambda Expressions and Functional Interfaces15%- Create and use lambda expressions
- Use primitive and binary variants of functional interfaces
- Use method references
- Use built-in functional interfaces: Predicate, Consumer, Function, Supplier
Java Class Design15%- Use static keyword in blocks, variables, methods, classes
- Override hashCode, equals, and toString methods
- Implement encapsulation
- Implement inheritance including visibility modifiers and composition
- Create singleton and immutable classes
- Implement polymorphism

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