Oracle 1z1-809-JPN exam dumps : Java SE 8 Programmer II (1z0-809日本語版)

  • Exam Code: 1z1-809-JPN
  • Exam Name: Java SE 8 Programmer II (1z0-809日本語版)
  • Updated: Sep 12, 2026     Q & A: 209 Questions and Answers

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Oracle 1z1-809 is a professional certification exam designed for Java SE 8 programmers who want to advance their career in the field of software development. Java SE 8 Programmer II (1z0-809日本語版) certification exam is considered to be one of the most sought-after exams in the Java development community. 1z1-809-JPN exam measures the candidate's knowledge, skills, and abilities to work with Java SE 8 programming language.

To pass the Oracle 1z1-809 exam, candidates must have a thorough understanding of Java programming concepts and be able to apply them to real-world scenarios. They must also be familiar with Java SE 8 features such as Lambda expressions and the Stream API. Additionally, candidates should have experience with database development using JDBC and be able to implement localization and internationalization features in Java applications.

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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Oracle 1z0-809日本語 Exam Syllabus Topics:

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

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