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Last Updated: Aug 21, 2026
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Oracle 1z0-809 Korean Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Concurrency | 12% | - Use Executors, Callable, Future - Use java.util.concurrent components - Control thread lifecycle and synchronization - Create threads: Thread class, Runnable, ExecutorService |
| Topic 2: Generics and Collections | 15% | - Use generic classes, interfaces, and methods - Use Collections Framework: List, Set, Map, Queue - Analyze type safety and type erasure - Sort and search collections |
| Topic 3: Advanced Java Class Design | 10% | - Create inner classes: static, local, nested, anonymous - Use abstract classes and methods - Use final keyword - Use enumerated types |
| Topic 4: JDBC | 5% | - Connect to database - Process resultsets - Execute queries and updates |
| Topic 5: Java I/O and NIO.2 | 8% | - Use Path, Files, FileSystem API - Read/write with java.io API - Stream operations on files |
| Topic 6: Java Class Design | 15% | - Create singleton and immutable classes - Implement inheritance including visibility modifiers and composition - Use static keyword in blocks, variables, methods, classes - Implement polymorphism - Implement encapsulation - Override hashCode, equals, and toString methods |
| Topic 7: Exceptions and Assertions | 8% | - Create custom exceptions - Use try-catch, multi-catch, finally - Use assertions - Use try-with-resources |
| Topic 8: 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 |
| Topic 9: Java Stream API | 15% | - Describe Stream interface and pipeline - Filter, map, and process streams - Use terminal operations: collect, reduce, count - Work with Optional class |
| Topic 10: Localization | 5% | - Use Locale class - Format numbers, dates, messages - Work with resource bundles |
| Topic 11: Java SE 8 Date/Time API | 7% | - Format and parse dates/times - Use LocalDate, LocalTime, LocalDateTime, Instant - Work with Period, Duration, time zones |
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