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Oracle 1Z0-809 Exam Reference

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:

Read the question and select only the answer(s) you think are correct by checking the corresponding check box.
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.
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.
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.
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.

For more info visit: Oracle Java8 1Z0-809 Exam Reference

Oracle 1z0-809日本語 Exam Syllabus Topics:

Section	Objectives
Java File I/O	- NIO.2 API 1. Use Path and Files classes 2. Traverse directory structures 3. Read file attributes
Building Database Applications with JDBC	- Database connectivity 1. Use JDBC drivers and connections 2. Execute SQL statements 3. Process ResultSet data
Java Concurrency	- Multithreading 1. Use synchronized blocks and locks 2. Create and manage threads 3. Use concurrent collections 4. Use ExecutorService
Java Stream API	- Stream processing 1. Sort and filter data using streams 2. Use findFirst, findAny, and match methods 3. Use Optional 4. Use map, flatMap, and peek 5. Collect and group stream results
Java I/O Fundamentals	- Input and output 1. Use BufferedReader and BufferedWriter 2. Use serialization 3. Read and write files
Localization	- Internationalization 1. Use Locale and ResourceBundle 2. Format dates and numbers 3. Handle localization properties
Advanced Java Class Design	- Advanced object-oriented features 1. Use abstract classes and interfaces 2. Use the final keyword 3. Use enum types 4. Create nested and inner classes 5. Develop Lambda expressions
Generics and Collections	- Collections framework 1. Use Comparator and Comparable 2. Use ArrayList, TreeSet, TreeMap, and ArrayDeque 3. Create and use generic classes 4. Iterate collections with Streams and forEach
Java Class Design	- Object-oriented principles 1. Implement inheritance and polymorphism 2. Implement encapsulation 3. Override equals, hashCode, and toString 4. Use static variables, methods, and initialization blocks 5. Create singleton and immutable classes
Exceptions and Assertions	- Error handling 1. Use try-catch and try-with-resources 2. Use assertions 3. Create custom exceptions
Lambda Built-in Functional Interfaces	- Functional programming 1. Use UnaryOperator and BinaryOperator 2. Use primitive functional interfaces 3. Use Predicate, Consumer, Function, and Supplier
Java SE 8 Date/Time API	- Date and time handling 1. Use LocalDate, LocalTime, and LocalDateTime 2. Use Period and Duration 3. Format and parse date values

Oracle Java SE 8 Programmer II (1z0-809日本語版) : 1z0-809日本語

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