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Given that this exam is at the professional level of certification, candidates have a large amount of work to do. Therefore, the first thing that is recommended is to thoroughly review the complete list of topics available on the official exam page, which includes:
- Stream API. It means the code development that uses optional class, Stream data, and calculation methods in addition to sorting a collection using Stream API.
- Exceptions and Assertions. In other words, how to use try-catch and throw statements, alongside creating custom exceptions and Auto-closeable resources.
- Java Concurrency. The candidates must be able to create worker threads, as well as to use parallel Fork/Join Framework and parallel Streams.
- Localization. In particular how to read and set the locale by using the Locale object, to create and read a Properties file, and to build a recourse bundle for each locale.
- Advanced Class Design. Specifically, candidates must demonstrate skills in how to implement encapsulation, polymorphism, and inheritance.
- NIO.2, Path Interface, and Files Class.
- Generics and Collections. This allows the candidate to create and use a generic class as well as ArrayList, TreeSet, TreeMap, and ArrayDeque objects.
- I/O Fundamentals. It means the skill of reading and writing data from the console.
To apply for this Oracle certification test, you should first pay $245 for a voucher. After that, go to Pearson VUE and log into your account. Enter the exam code, which should be 1Z0-809, and follow the instructions that will pop up.
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Certification Path
Oracle Java SE 8 Programmer I can act as a prerequisite for this 1Z0-809 exam.
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Oracle 1z0-809 Korean Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Localization | 5% | - Format numbers, dates, messages - Work with resource bundles - Use Locale class |
| Topic 2: Advanced Java Class Design | 10% | - Create inner classes: static, local, nested, anonymous - Use final keyword - Use abstract classes and methods - Use enumerated types |
| Topic 3: JDBC | 5% | - Connect to database - Process resultsets - Execute queries and updates |
| Topic 4: Java I/O and NIO.2 | 8% | - Read/write with java.io API - Use Path, Files, FileSystem API - Stream operations on files |
| Topic 5: Exceptions and Assertions | 8% | - Use try-catch, multi-catch, finally - Use try-with-resources - Use assertions - Create custom exceptions |
| Topic 6: Lambda Expressions and Functional Interfaces | 15% | - Use method references - Use built-in functional interfaces: Predicate, Consumer, Function, Supplier - Use primitive and binary variants of functional interfaces - Create and use lambda expressions |
| Topic 7: Concurrency | 12% | - Create threads: Thread class, Runnable, ExecutorService - Control thread lifecycle and synchronization - Use java.util.concurrent components - Use Executors, Callable, Future |
| Topic 8: Java SE 8 Date/Time API | 7% | - Use LocalDate, LocalTime, LocalDateTime, Instant - Work with Period, Duration, time zones - Format and parse dates/times |
| Topic 9: Generics and Collections | 15% | - Use generic classes, interfaces, and methods - Use Collections Framework: List, Set, Map, Queue - Sort and search collections - Analyze type safety and type erasure |
| Topic 10: Java Class Design | 15% | - Implement inheritance including visibility modifiers and composition - Override hashCode, equals, and toString methods - Create singleton and immutable classes - Use static keyword in blocks, variables, methods, classes - Implement encapsulation - Implement polymorphism |
| Topic 11: Java Stream API | 15% | - Describe Stream interface and pipeline - Work with Optional class - Filter, map, and process streams - Use terminal operations: collect, reduce, count |
