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Last Updated: Aug 03, 2026
No. of Questions: 209 Questions & Answers with Testing Engine
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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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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:
- Generics and Collections
- Building Database Applications with JDBC
- Java I/O Fundamentals
- Exceptions and Assertions
- Localization
- Use Java SE 8 Date/Time API
- Advanced Java Class Design
- Java Class Design
- Lambda Built-in Functional Interfaces
- Java File I/O (NIO.2)
- Java Stream API
- Java Concurrency
Oracle 1z0-809 Korean Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Concurrency | 12% | - Use Executors, Callable, Future - Control thread lifecycle and synchronization - Use java.util.concurrent components - Create threads: Thread class, Runnable, ExecutorService |
| Java SE 8 Date/Time API | 7% | - Use LocalDate, LocalTime, LocalDateTime, Instant - Format and parse dates/times - Work with Period, Duration, time zones |
| Advanced Java Class Design | 10% | - Create inner classes: static, local, nested, anonymous - Use final keyword - Use abstract classes and methods - Use enumerated types |
| JDBC | 5% | - Execute queries and updates - Connect to database - Process resultsets |
| Java Class Design | 15% | - Implement encapsulation - Create singleton and immutable classes - Implement inheritance including visibility modifiers and composition - Use static keyword in blocks, variables, methods, classes - Override hashCode, equals, and toString methods - Implement polymorphism |
| 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 |
| Exceptions and Assertions | 8% | - Use try-with-resources - Create custom exceptions - Use assertions - Use try-catch, multi-catch, finally |
| Java Stream API | 15% | - Work with Optional class - Describe Stream interface and pipeline - Filter, map, and process streams - Use terminal operations: collect, reduce, count |
| Java I/O and NIO.2 | 8% | - Use Path, Files, FileSystem API - Stream operations on files - Read/write with java.io API |
| Localization | 5% | - Use Locale class - Format numbers, dates, messages - Work with resource bundles |
| Lambda Expressions and Functional Interfaces | 15% | - Use method references - Create and use lambda expressions - Use primitive and binary variants of functional interfaces - Use built-in functional interfaces: Predicate, Consumer, Function, Supplier |
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What kinds of study material TopExamCollection provides?
Test Engine: 1z0-809 Korean study test engine can be downloaded and run on your own devices. Practice the test on the interactive & simulated environment.
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