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:
- I/O Fundamentals. It means the skill of reading and writing data from the console.
- NIO.2, Path Interface, and Files Class.
- Advanced Class Design. Specifically, candidates must demonstrate skills in how to implement encapsulation, polymorphism, and inheritance.
- Generics and Collections. This allows the candidate to create and use a generic class as well as ArrayList, TreeSet, TreeMap, and ArrayDeque objects.
- 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.
- 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.
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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Certified specialists in the field of Java development are highly valued by employers of large IT companies, so only those candidates who have proven their practical skills in using Java language by passing specialized Oracle exams can avoid serious competition and show their expertise. However, having the OCP Java SE 8 Programmer certificate will not only set you apart from other applicants but allow you to qualify for a higher salary.
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Oracle Java SE 8 Programmer I can act as a prerequisite for this 1Z0-809 exam.
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Oracle 1z1-809 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Concurrency | 12% | - Create threads: Thread class, Runnable, ExecutorService - Use java.util.concurrent components - Use Executors, Callable, Future - Control thread lifecycle and synchronization |
| Java SE 8 Date/Time API | 7% | - Work with Period, Duration, time zones - Format and parse dates/times - Use LocalDate, LocalTime, LocalDateTime, Instant |
| Java Class Design | 15% | - Implement encapsulation - Implement polymorphism - Create singleton and immutable classes - Override hashCode, equals, and toString methods - Implement inheritance including visibility modifiers and composition - Use static keyword in blocks, variables, methods, classes |
| JDBC | 5% | - Execute queries and updates - Connect to database - Process resultsets |
| Java I/O and NIO.2 | 8% | - Stream operations on files - Read/write with java.io API - Use Path, Files, FileSystem API |
| Localization | 5% | - Format numbers, dates, messages - Use Locale class - Work with resource bundles |
| Exceptions and Assertions | 8% | - Use assertions - Use try-with-resources - Use try-catch, multi-catch, finally - Create custom exceptions |
| Generics and Collections | 15% | - Use Collections Framework: List, Set, Map, Queue - Use generic classes, interfaces, and methods - Sort and search collections - Analyze type safety and type erasure |
| Lambda Expressions and Functional Interfaces | 15% | - Create and use lambda expressions - Use built-in functional interfaces: Predicate, Consumer, Function, Supplier - Use primitive and binary variants of functional interfaces - Use method references |
| Java Stream API | 15% | - Filter, map, and process streams - Use terminal operations: collect, reduce, count - Describe Stream interface and pipeline - Work with Optional class |
| Advanced Java Class Design | 10% | - Create inner classes: static, local, nested, anonymous - Use enumerated types - Use final keyword - Use abstract classes and methods |
