Oracle 1z0-809-KR - Java SE 8 Programmer II (1z0-809 Korean Version)
Updated: Jul 22, 2026
Q & A: 209 Questions and Answers
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Updated: Jul 22, 2026
Q & A: 209 Questions and Answers
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Oracle Java SE 8 Programmer II 1Z0-809 Exam is related to Oracle Java SE and credits toward Oracle Certified Professional and Java SE 8 Programmer Certification. This exam is part second of the Java SE 8 Programmer. This exam validates the ability to develop code that uses the static keyword on blocks, variables, methods and chases, implements and intends interfaces and use the at override annotation, search for data by using search methods of the stream classes, save results to a collection. It also validates the ability to create and manage date-based and time-based events including a combination of date and time int a single object. Java EE Developers, Web Developers and Java Developers usually hold or pursue this certification and you can expect the same job role after completion of this certification.
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.
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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Java I/O and NIO.2 | 8% | - Stream operations on files - Read/write with java.io API - Use Path, Files, FileSystem API |
| Topic 2: JDBC | 5% | - Execute queries and updates - Process resultsets - Connect to database |
| Topic 3: Java Class Design | 15% | - Use static keyword in blocks, variables, methods, classes - Create singleton and immutable classes - Implement inheritance including visibility modifiers and composition - Implement encapsulation - Override hashCode, equals, and toString methods - Implement polymorphism |
| Topic 4: 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 5: Exceptions and Assertions | 8% | - Use assertions - Use try-with-resources - Use try-catch, multi-catch, finally - Create custom exceptions |
| Topic 6: Java Stream API | 15% | - Filter, map, and process streams - Use terminal operations: collect, reduce, count - Work with Optional class - Describe Stream interface and pipeline |
| Topic 7: Localization | 5% | - Format numbers, dates, messages - Work with resource bundles - Use Locale class |
| Topic 8: Concurrency | 12% | - Use Executors, Callable, Future - Use java.util.concurrent components - Create threads: Thread class, Runnable, ExecutorService - Control thread lifecycle and synchronization |
| Topic 9: Generics and Collections | 15% | - Sort and search collections - Analyze type safety and type erasure - Use Collections Framework: List, Set, Map, Queue - Use generic classes, interfaces, and methods |
| Topic 10: Advanced Java Class Design | 10% | - Use final keyword - Use enumerated types - Use abstract classes and methods - Create inner classes: static, local, nested, anonymous |
| Topic 11: Java SE 8 Date/Time API | 7% | - Work with Period, Duration, time zones - Format and parse dates/times - Use LocalDate, LocalTime, LocalDateTime, Instant |
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