How to study the 1Z0-809 Exam
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The Oracle 1Z0-809 exam is intended for those individuals who want to get the Oracle Certified Professional, Java SE 8 Programmer certification. The potential candidates for this test are those IT specialists who have some years of experience with Java SE 8 platform and hold the Oracle Certified Associate, Java SE 8 Programmer credential.
The Oracle 1Z0-809 is a 150-minute test with 85 questions, that are mainly of a multiple-choice format, but there may also be other types, such as drag and drop, simulations, or scenario-based. This certification exam is available in the English language and the passing score for it is 65%. However, you need to try to get more than that.
Oracle 1z0-809日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Java SE 8 Date/Time API | 7% | - Work with Period, Duration, time zones - Format and parse dates/times - Use LocalDate, LocalTime, LocalDateTime, Instant |
| Topic 2: Java Stream API | 15% | - Filter, map, and process streams - Work with Optional class - Describe Stream interface and pipeline - Use terminal operations: collect, reduce, count |
| Topic 3: Generics and Collections | 15% | - Use Collections Framework: List, Set, Map, Queue - Use generic classes, interfaces, and methods - Analyze type safety and type erasure - Sort and search collections |
| Topic 4: Java I/O and NIO.2 | 8% | - Read/write with java.io API - Use Path, Files, FileSystem API - Stream operations on files |
| Topic 5: Lambda Expressions and Functional Interfaces | 15% | - Use method references - Use built-in functional interfaces: Predicate, Consumer, Function, Supplier - Use primitive and binary variants of functional interfaces - Create and use lambda expressions |
| Topic 6: Java Class Design | 15% | - Create singleton and immutable classes - Implement polymorphism - Implement encapsulation - Implement inheritance including visibility modifiers and composition - Use static keyword in blocks, variables, methods, classes - Override hashCode, equals, and toString methods |
| Topic 7: JDBC | 5% | - Process resultsets - Execute queries and updates - Connect to database |
| Topic 8: Localization | 5% | - Format numbers, dates, messages - Work with resource bundles - Use Locale class |
| Topic 9: Exceptions and Assertions | 8% | - Use try-with-resources - Create custom exceptions - Use assertions - Use try-catch, multi-catch, finally |
| Topic 10: Concurrency | 12% | - Use Executors, Callable, Future - Control thread lifecycle and synchronization - Use java.util.concurrent components - Create threads: Thread class, Runnable, ExecutorService |
| Topic 11: Advanced Java Class Design | 10% | - Create inner classes: static, local, nested, anonymous - Use enumerated types - Use final keyword - Use abstract classes and methods |
