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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:
- 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.
- Navigate the Java Certification Questions using the “Previous” and “Next” buttons.
- Take a look at the progress bar at the top; it will tell how you are progressing throughout the exam.
- 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.
- 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.
- 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.
For more info visit: Oracle Java8 1Z0-809 Exam Reference
Certification Path
Oracle Java SE 8 Programmer I can act as a prerequisite for this 1Z0-809 exam.
What is the duration of the 1Z0-809 Exam
- Number of Questions: 85
- Format: Multiple choices, multiple answers
- Passing Score: 65%
- Length of Examination: 150 minutes
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Oracle 1z0-809日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Exceptions and Assertions | 8% | - Create custom exceptions - Use try-catch, multi-catch, finally - Use assertions - Use try-with-resources |
| Topic 2: Generics and Collections | 15% | - Use generic classes, interfaces, and methods - Sort and search collections - Analyze type safety and type erasure - Use Collections Framework: List, Set, Map, Queue |
| Topic 3: Java I/O and NIO.2 | 8% | - Use Path, Files, FileSystem API - Stream operations on files - Read/write with java.io API |
| Topic 4: JDBC | 5% | - Connect to database - Process resultsets - Execute queries and updates |
| Topic 5: Localization | 5% | - Work with resource bundles - Use Locale class - Format numbers, dates, messages |
| Topic 6: Java Stream API | 15% | - Filter, map, and process streams - Use terminal operations: collect, reduce, count - Describe Stream interface and pipeline - Work with Optional class |
| Topic 7: Java SE 8 Date/Time API | 7% | - Work with Period, Duration, time zones - Use LocalDate, LocalTime, LocalDateTime, Instant - Format and parse dates/times |
| Topic 8: Java Class Design | 15% | - Override hashCode, equals, and toString methods - Implement encapsulation - Create singleton and immutable classes - Implement polymorphism - Use static keyword in blocks, variables, methods, classes - Implement inheritance including visibility modifiers and composition |
| Topic 9: Advanced Java Class Design | 10% | - Use enumerated types - Create inner classes: static, local, nested, anonymous - Use final keyword - Use abstract classes and methods |
| Topic 10: Lambda Expressions and Functional Interfaces | 15% | - Create and use lambda expressions - Use built-in functional interfaces: Predicate, Consumer, Function, Supplier - Use method references - Use primitive and binary variants of functional interfaces |
| Topic 11: Concurrency | 12% | - Control thread lifecycle and synchronization - Use java.util.concurrent components - Use Executors, Callable, Future - Create threads: Thread class, Runnable, ExecutorService |
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