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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:
- Advanced Class Design. Specifically, candidates must demonstrate skills in how to implement encapsulation, polymorphism, and inheritance.
- NIO.2, Path Interface, and Files Class.
- I/O Fundamentals. It means the skill of reading and writing data from the console.
- Generics and Collections. This allows the candidate to create and use a generic class as well as ArrayList, TreeSet, TreeMap, and ArrayDeque objects.
- Exceptions and Assertions. In other words, how to use try-catch and throw statements, alongside creating custom exceptions and Auto-closeable resources.
- 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.
- Java Concurrency. The candidates must be able to create worker threads, as well as to use parallel Fork/Join Framework and parallel Streams.
- 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.
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.
Oracle 1z0-809日本語 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Generics and Collections | - Generic Types and Methods - Java Collections Framework |
| Topic 2: Advanced Object-Oriented Concepts | - Abstract Classes and Interfaces - Nested and Inner Classes |
| Topic 3: Concurrency | - Threading and Runnable - Concurrency Utilities |
| Topic 4: Java I/O | - File I/O (NIO.2) - Serialization |
| Topic 5: Database Access | - JDBC API - SQL Operations via Java |
| Topic 6: Exceptions and Assertions | - Assertions - Exception Handling |
| Topic 7: Functional Programming | - Lambda Expressions - Functional Interfaces |
| Topic 8: Java Class Design | - Polymorphism and Method Overriding - Inheritance and Encapsulation |
| Topic 9: Streams API | - Parallel Streams - Stream Operations |
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