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Java 1Z0-809 Free Test is a test created to demonstrate all the features of our Java8 Professional Web Simulator. You will be able to access 25 full questions and will have 44 minutes to finish the test.
There are several components you can interact with when you take our mock exams:
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For more info visit: Oracle Java8 1Z0-809 Exam Reference
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Oracle 1z0-809 Korean Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Generics and Collections | 15% | - Use generic classes, interfaces, and methods - Analyze type safety and type erasure - Use Collections Framework: List, Set, Map, Queue - Sort and search collections |
| Concurrency | 12% | - Control thread lifecycle and synchronization - Use Executors, Callable, Future - Create threads: Thread class, Runnable, ExecutorService - Use java.util.concurrent components |
| Lambda Expressions and Functional Interfaces | 15% | - Use built-in functional interfaces: Predicate, Consumer, Function, Supplier - Create and use lambda expressions - Use method references - Use primitive and binary variants of functional interfaces |
| Java SE 8 Date/Time API | 7% | - Use LocalDate, LocalTime, LocalDateTime, Instant - Work with Period, Duration, time zones - Format and parse dates/times |
| Localization | 5% | - Format numbers, dates, messages - Work with resource bundles - Use Locale class |
| Java Stream API | 15% | - Describe Stream interface and pipeline - Use terminal operations: collect, reduce, count - Filter, map, and process streams - Work with Optional class |
| Java Class Design | 15% | - Use static keyword in blocks, variables, methods, classes - Implement inheritance including visibility modifiers and composition - Create singleton and immutable classes - Override hashCode, equals, and toString methods - Implement polymorphism - Implement encapsulation |
| Advanced Java Class Design | 10% | - Create inner classes: static, local, nested, anonymous - Use final keyword - Use abstract classes and methods - Use enumerated types |
| Exceptions and Assertions | 8% | - Use assertions - Use try-catch, multi-catch, finally - Use try-with-resources - Create custom exceptions |
| JDBC | 5% | - Process resultsets - Connect to database - Execute queries and updates |
| Java I/O and NIO.2 | 8% | - Use Path, Files, FileSystem API - Stream operations on files - Read/write with java.io API |
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