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Updated: Sep 16, 2026
No. of Questions: 209 Questions & Answers with Testing Engine
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To prepare for the exam, candidates need to have a good understanding of Java SE 8 features and their applications. They should also be familiar with Java development tools and frameworks, such as Eclipse, Maven, and Spring. There are many resources available to help candidates prepare for the exam, including online courses, study guides, practice tests, and forums.
The 1z1-809 exam is a multiple-choice exam that covers various topics related to Java programming, such as Lambda Expressions, Collections and Generics, Concurrency, JDBC API, and much more. 1z1-809-KR exam consists of 85 questions that must be completed within 150 minutes, and candidates must score at least 65% to pass the exam. 1z1-809-KR exam is available in various languages, including English, Japanese, and Simplified Chinese.
If you are an experienced Java developer looking to take your career to the next level, the Oracle 1z1-809 Certification Exam is an excellent choice. It is a globally recognized certification that demonstrates your expertise in Java SE 8 and is highly valued by employers.
Oracle 1z0-809 Korean Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Concurrency | 12% | - Use java.util.concurrent components - Create threads: Thread class, Runnable, ExecutorService - Control thread lifecycle and synchronization - Use Executors, Callable, Future |
| Topic 2: Advanced Java Class Design | 10% | - Create inner classes: static, local, nested, anonymous - Use enumerated types - Use final keyword - Use abstract classes and methods |
| Topic 3: Java I/O and NIO.2 | 8% | - Stream operations on files - Use Path, Files, FileSystem API - Read/write with java.io API |
| Topic 4: Java SE 8 Date/Time API | 7% | - Format and parse dates/times - Work with Period, Duration, time zones - Use LocalDate, LocalTime, LocalDateTime, Instant |
| Topic 5: Localization | 5% | - Use Locale class - Format numbers, dates, messages - Work with resource bundles |
| Topic 6: Exceptions and Assertions | 8% | - Use try-with-resources - Use try-catch, multi-catch, finally - Create custom exceptions - Use assertions |
| Topic 7: Java Stream API | 15% | - Work with Optional class - Filter, map, and process streams - Describe Stream interface and pipeline - Use terminal operations: collect, reduce, count |
| Topic 8: Java Class Design | 15% | - Implement inheritance including visibility modifiers and composition - Override hashCode, equals, and toString methods - Use static keyword in blocks, variables, methods, classes - Create singleton and immutable classes - Implement polymorphism - Implement encapsulation |
| Topic 9: Generics and Collections | 15% | - Analyze type safety and type erasure - Use generic classes, interfaces, and methods - Sort and search collections - Use Collections Framework: List, Set, Map, Queue |
| Topic 10: JDBC | 5% | - Process resultsets - Connect to database - Execute queries and updates |
| Topic 11: Lambda Expressions and Functional Interfaces | 15% | - Use primitive and binary variants of functional interfaces - Use method references - Create and use lambda expressions - Use built-in functional interfaces: Predicate, Consumer, Function, Supplier |
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