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Java 1Z0-809 Free Test is a test created to demonstrate all the features of our Java8 Professional Web Simulator. You will be able to access 25 full questions and will have 44 minutes to finish the test.
There are several components you can interact with when you take our mock exams:
- Keep an eye on the countdown. This will tell you how much time is left. When the countdown expires, the test will be automatically submitted.
- if you want to take a look at the correct answers for a question, just click the “Solution” button. In the solution section you will be able to check your answers as well as find a full explanation.
- Read the question and select only the answer(s) you think are correct by checking the corresponding check box.
- Navigate the Java Certification Questions using the “Previous” and “Next” buttons.
- Mark the Java Certification Questions you wish to review later. All the questions you have marked will be listed in the right section “marked questions”. You will be able to jump directly to the question from this list.
- Take a look at the progress bar at the top; it will tell how you are progressing throughout the exam.
- Once the test is submitted, the result section will expand. Here, you will be able to review all the questions of the test. From here, you can also navigate directly to each question.
For more info visit: Oracle Java8 1Z0-809 Exam Reference
Oracle 1z1-809 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Generics and Collections | 15% | - Use Collections Framework: List, Set, Map, Queue - Analyze type safety and type erasure - Use generic classes, interfaces, and methods - Sort and search collections |
| Lambda Expressions and Functional Interfaces | 15% | - Use primitive and binary variants of functional interfaces - Use method references - Create and use lambda expressions - Use built-in functional interfaces: Predicate, Consumer, Function, Supplier |
| Java I/O and NIO.2 | 8% | - Use Path, Files, FileSystem API - Stream operations on files - Read/write with java.io API |
| Exceptions and Assertions | 8% | - Create custom exceptions - Use assertions - Use try-with-resources - Use try-catch, multi-catch, finally |
| Java SE 8 Date/Time API | 7% | - Work with Period, Duration, time zones - Use LocalDate, LocalTime, LocalDateTime, Instant - Format and parse dates/times |
| Concurrency | 12% | - Create threads: Thread class, Runnable, ExecutorService - Use Executors, Callable, Future - Control thread lifecycle and synchronization - Use java.util.concurrent components |
| JDBC | 5% | - Execute queries and updates - Process resultsets - Connect to database |
| Advanced Java Class Design | 10% | - Use enumerated types - Use final keyword - Create inner classes: static, local, nested, anonymous - Use abstract classes and methods |
| Localization | 5% | - Format numbers, dates, messages - Work with resource bundles - Use Locale class |
| Java Stream API | 15% | - Use terminal operations: collect, reduce, count - Describe Stream interface and pipeline - Work with Optional class - Filter, map, and process streams |
| Java Class Design | 15% | - Implement inheritance including visibility modifiers and composition - Use static keyword in blocks, variables, methods, classes - Implement polymorphism - Override hashCode, equals, and toString methods - Create singleton and immutable classes - Implement encapsulation |
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