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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.
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| Section | Weight | Objectives |
|---|---|---|
| Concurrency | 12% | - Use Executors, Callable, Future - Create threads: Thread class, Runnable, ExecutorService - Control thread lifecycle and synchronization - Use java.util.concurrent components |
| Java Stream API | 15% | - Work with Optional class - Filter, map, and process streams - Use terminal operations: collect, reduce, count - Describe Stream interface and pipeline |
| Java SE 8 Date/Time API | 7% | - Use LocalDate, LocalTime, LocalDateTime, Instant - Work with Period, Duration, time zones - Format and parse dates/times |
| Localization | 5% | - Use Locale class - Format numbers, dates, messages - Work with resource bundles |
| JDBC | 5% | - Execute queries and updates - Process resultsets - Connect to database |
| 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 |
| Java Class Design | 15% | - Create singleton and immutable classes - Implement inheritance including visibility modifiers and composition - Implement polymorphism - Override hashCode, equals, and toString methods - Implement encapsulation - Use static keyword in blocks, variables, methods, classes |
| Java I/O and NIO.2 | 8% | - Stream operations on files - Use Path, Files, FileSystem API - Read/write with java.io API |
| Generics and Collections | 15% | - Use Collections Framework: List, Set, Map, Queue - Sort and search collections - Analyze type safety and type erasure - Use generic classes, interfaces, and methods |
| Exceptions and Assertions | 8% | - Use try-catch, multi-catch, finally - Use try-with-resources - Use assertions - Create custom exceptions |
| Advanced Java Class Design | 10% | - Use enumerated types - Use abstract classes and methods - Create inner classes: static, local, nested, anonymous - Use final keyword |
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