Instant Download Oracle : 1z0-809日本語 Questions & Answers as PDF & Test Engine
Updated: Aug 06, 2026
No. of Questions: 209 Questions & Answers with Testing Engine
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Oracle Java SE 8 Programmer I can act as a prerequisite for this 1Z0-809 exam.
Difficulty in writing 1Z0-809 Exam
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Oracle 1z0-809日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Java Stream API | 15% | - Describe Stream interface and pipeline - Use terminal operations: collect, reduce, count - Filter, map, and process streams - Work with Optional class |
| Topic 2: Advanced Java Class Design | 10% | - Use enumerated types - Use final keyword - Use abstract classes and methods - Create inner classes: static, local, nested, anonymous |
| Topic 3: Exceptions and Assertions | 8% | - Create custom exceptions - Use assertions - Use try-with-resources - Use try-catch, multi-catch, finally |
| Topic 4: Localization | 5% | - Use Locale class - Work with resource bundles - Format numbers, dates, messages |
| Topic 5: Java SE 8 Date/Time API | 7% | - Use LocalDate, LocalTime, LocalDateTime, Instant - Work with Period, Duration, time zones - Format and parse dates/times |
| Topic 6: JDBC | 5% | - Execute queries and updates - Process resultsets - Connect to database |
| Topic 7: Lambda Expressions and Functional Interfaces | 15% | - Use primitive and binary variants of functional interfaces - Use method references - Use built-in functional interfaces: Predicate, Consumer, Function, Supplier - Create and use lambda expressions |
| Topic 8: Generics and Collections | 15% | - Sort and search collections - Analyze type safety and type erasure - Use generic classes, interfaces, and methods - Use Collections Framework: List, Set, Map, Queue |
| Topic 9: Java I/O and NIO.2 | 8% | - Stream operations on files - Read/write with java.io API - Use Path, Files, FileSystem API |
| Topic 10: Concurrency | 12% | - Control thread lifecycle and synchronization - Use Executors, Callable, Future - Create threads: Thread class, Runnable, ExecutorService - Use java.util.concurrent components |
| Topic 11: Java Class Design | 15% | - Implement encapsulation - Implement polymorphism - Use static keyword in blocks, variables, methods, classes - Create singleton and immutable classes - Override hashCode, equals, and toString methods - Implement inheritance including visibility modifiers and composition |
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