1z0-809日本語 exam dumps

Oracle 1z0-809日本語 Value Package

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  • Exam Code: 1z0-809日本語
  • Exam Name: Java SE 8 Programmer II (1z0-809日本語版)
  • No. of Questions: 209 Questions and Answers
  • Updated: Sep 05, 2026

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Reference: https://education.oracle.com/pls/web_prod-plq-dad/db_pages.getpage?page_id=5001&get_params=p_exam_id:1Z0-809

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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:

  • 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.
  • Take a look at the progress bar at the top; it will tell how you are progressing throughout the exam.
  • 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.
  • 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.
  • Read the question and select only the answer(s) you think are correct by checking the corresponding check box.

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

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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:

  • 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.
  • NIO.2, Path Interface, and Files Class.
  • Java Concurrency. The candidates must be able to create worker threads, as well as to use parallel Fork/Join Framework and parallel Streams.
  • 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.
  • 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.
  • I/O Fundamentals. It means the skill of reading and writing data from the console.
  • Exceptions and Assertions. In other words, how to use try-catch and throw statements, alongside creating custom exceptions and Auto-closeable resources.

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.

Oracle 1z0-809日本語 Exam Syllabus Topics:

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

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