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Oracle 1z0-809: Java SE 8 Programmer II is a certification exam designed to test the knowledge and skills of Java developers. 1z1-809 exam is intended for professionals who have already earned the Oracle Certified Associate (OCA) Java SE 8 Programmer certification and want to progress to the next level. 1z1-809 exam is aimed at testing the candidate's proficiency in advanced features and APIs of Java SE 8.

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The Oracle 1z1-809 exam consists of 85 multiple-choice questions and lasts for 150 minutes. The passing score is 65%, and the exam is available in multiple languages. Candidates must register for the exam through the Oracle website and pay a fee. Once you pass the exam, you will receive an official certification from Oracle that you can add to your resume and LinkedIn profile.

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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The 1z1-809 exam is a multiple-choice exam that covers a wide range of Java programming topics, including Java Class Design, Advanced Java Class Design, Generics and Collections, Lambda Built-in Functional Interfaces, Java Stream API, Exceptions and Assertions, Java I/O Fundamentals, Java File I/O (NIO.2), Java Concurrency, Building Database Applications with JDBC, Localization, Annotations, and Java Time API. To pass the exam, candidates need to demonstrate a good understanding of all these topics and the ability to apply them in real-world programming scenarios.

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Oracle 1z1-809 Exam Syllabus Topics:

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