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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:
- Exceptions and Assertions. In other words, how to use try-catch and throw statements, alongside creating custom exceptions and Auto-closeable resources.
- I/O Fundamentals. It means the skill of reading and writing data from the console.
- 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.
- 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.
- Generics and Collections. This allows the candidate to create and use a generic class as well as ArrayList, TreeSet, TreeMap, and ArrayDeque objects.
- NIO.2, Path Interface, and Files Class.
- Advanced Class Design. Specifically, candidates must demonstrate skills in how to implement encapsulation, polymorphism, and inheritance.
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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Oracle 1z0-809 (Java SE 8 Programmer II) certification exam is designed for professionals with intermediate to advanced knowledge of Java programming language. Java SE 8 Programmer II (1z0-809日本語版) certification exam is a step up from the Oracle 1z0-808 (Java SE 8 Programmer I) certification exam, as it focuses on more complex Java programming concepts and advanced topics such as concurrency, security, and database integration.
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One of the key areas tested in the Oracle 1z1-809 exam is functional programming. This refers to the ability to write code that is more declarative and less imperative, using features such as lambda expressions and streams. 1z1-809-JPN exam also tests your understanding of concurrency and how to write multithreaded code that is safe and efficient. You will also be tested on your knowledge of database connectivity, including JDBC and SQL.
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Oracle 1z0-809日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Generics and Collections | 15% | - Sort and search collections - Use generic classes, interfaces, and methods - Use Collections Framework: List, Set, Map, Queue - Analyze type safety and type erasure |
| Advanced Java Class Design | 10% | - Use final keyword - Use abstract classes and methods - Use enumerated types - Create inner classes: static, local, nested, anonymous |
| Lambda Expressions and Functional Interfaces | 15% | - Create and use lambda expressions - Use primitive and binary variants of functional interfaces - Use method references - Use built-in functional interfaces: Predicate, Consumer, Function, Supplier |
| Localization | 5% | - Format numbers, dates, messages - Work with resource bundles - Use Locale class |
| Java Class Design | 15% | - Create singleton and immutable classes - Override hashCode, equals, and toString methods - Implement polymorphism - Use static keyword in blocks, variables, methods, classes - Implement inheritance including visibility modifiers and composition - Implement encapsulation |
| Java I/O and NIO.2 | 8% | - Read/write with java.io API - Use Path, Files, FileSystem API - Stream operations on files |
| Java SE 8 Date/Time API | 7% | - Format and parse dates/times - Work with Period, Duration, time zones - Use LocalDate, LocalTime, LocalDateTime, Instant |
| Exceptions and Assertions | 8% | - Use try-with-resources - Use assertions - Use try-catch, multi-catch, finally - Create custom exceptions |
| Concurrency | 12% | - Control thread lifecycle and synchronization - Create threads: Thread class, Runnable, ExecutorService - Use java.util.concurrent components - Use Executors, Callable, Future |
| JDBC | 5% | - Process resultsets - Execute queries and updates - Connect to database |
| Java Stream API | 15% | - Filter, map, and process streams - Use terminal operations: collect, reduce, count - Describe Stream interface and pipeline - Work with Optional class |
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