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Last Updated: Aug 08, 2026
No. of Questions: 209 Questions & Answers with Testing Engine
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1Z0-809 Exam topics
Candidates must know the exam topics before they start of preparation. Because it will really help them in hitting the core. Our Oracle 1Z0-809 exam dumps will include the following topics:
- Exceptions and Assertions
- Java File I/O (NIO.2)
- Advanced Java Class Design
- Localization
- Java Class Design
- Java Stream API
- Java I/O Fundamentals
- Generics and Collections
- Use Java SE 8 Date/Time API
- Lambda Built-in Functional Interfaces
- Java Concurrency
- Building Database Applications with JDBC
Oracle 1z0-809 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: JDBC | 5% | - Process resultsets - Connect to database - Execute queries and updates |
| Topic 2: Java Stream API | 15% | - Filter, map, and process streams - Describe Stream interface and pipeline - Work with Optional class - Use terminal operations: collect, reduce, count |
| Topic 3: Localization | 5% | - Work with resource bundles - Format numbers, dates, messages - Use Locale class |
| Topic 4: Concurrency | 12% | - Create threads: Thread class, Runnable, ExecutorService - Control thread lifecycle and synchronization - Use Executors, Callable, Future - Use java.util.concurrent components |
| Topic 5: Lambda Expressions and Functional Interfaces | 15% | - Use built-in functional interfaces: Predicate, Consumer, Function, Supplier - Use method references - Use primitive and binary variants of functional interfaces - Create and use lambda expressions |
| Topic 6: Java Class Design | 15% | - Use static keyword in blocks, variables, methods, classes - Override hashCode, equals, and toString methods - Implement encapsulation - Create singleton and immutable classes - Implement polymorphism - Implement inheritance including visibility modifiers and composition |
| Topic 7: Generics and Collections | 15% | - Use Collections Framework: List, Set, Map, Queue - Analyze type safety and type erasure - Sort and search collections - Use generic classes, interfaces, and methods |
| Topic 8: Exceptions and Assertions | 8% | - Create custom exceptions - Use try-with-resources - Use assertions - Use try-catch, multi-catch, finally |
| Topic 9: Java I/O and NIO.2 | 8% | - Stream operations on files - Use Path, Files, FileSystem API - Read/write with java.io API |
| Topic 10: Advanced Java Class Design | 10% | - Create inner classes: static, local, nested, anonymous - Use abstract classes and methods - Use enumerated types - Use final keyword |
| 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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