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The Oracle 1z1-809 exam is highly respected in the industry, and passing it is a great way to demonstrate your skills and expertise as a Java programmer. Java SE 8 Programmer II certification shows that you have a deep understanding of the Java programming language and are capable of working on complex projects. It also demonstrates that you are committed to learning and staying up-to-date with the latest advances in the field.
Preparation for the 1z1-809 exam typically involves studying the exam objectives, reading related textbooks, and practicing with sample questions and simulations. Oracle also offers official training courses that can help prepare candidates for the exam. These courses cover all the topics tested on the 1z1-809 exam and provide hands-on lab exercises to reinforce learning.
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Oracle 1z1-809 certification exam is a great way for Java programmers to validate their skills and knowledge in Java programming language. Java SE 8 Programmer II certification is recognized globally, and it is a valuable credential for employers who are looking for competent Java developers. 1z1-809 exam measures the candidate's knowledge of Java programming, 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, and Java Concurrency. It is recommended that candidates have at least two years of experience working with Java SE 8 before taking the exam.
| Section | Weight | Objectives |
|---|---|---|
| Concurrency | 12% | - Use Executors, Callable, Future - Use java.util.concurrent components - Create threads: Thread class, Runnable, ExecutorService - Control thread lifecycle and synchronization |
| JDBC | 5% | - Process resultsets - Execute queries and updates - Connect to database |
| Exceptions and Assertions | 8% | - Use assertions - Use try-catch, multi-catch, finally - Use try-with-resources - Create custom exceptions |
| Localization | 5% | - Work with resource bundles - Use Locale class - Format numbers, dates, messages |
| Java Stream API | 15% | - Use terminal operations: collect, reduce, count - Work with Optional class - Filter, map, and process streams - Describe Stream interface and pipeline |
| Lambda Expressions and Functional Interfaces | 15% | - Use method references - Use primitive and binary variants of functional interfaces - Create and use lambda expressions - Use built-in functional interfaces: Predicate, Consumer, Function, Supplier |
| Java I/O and NIO.2 | 8% | - Stream operations on files - Use Path, Files, FileSystem API - Read/write with java.io API |
| Java Class Design | 15% | - Use static keyword in blocks, variables, methods, classes - Create singleton and immutable classes - Override hashCode, equals, and toString methods - Implement inheritance including visibility modifiers and composition - Implement encapsulation - Implement polymorphism |
| Advanced Java Class Design | 10% | - Use enumerated types - Use abstract classes and methods - Create inner classes: static, local, nested, anonymous - Use final keyword |
| Java SE 8 Date/Time API | 7% | - Work with Period, Duration, time zones - Use LocalDate, LocalTime, LocalDateTime, Instant - Format and parse dates/times |
| Generics and Collections | 15% | - Sort and search collections - Analyze type safety and type erasure - Use Collections Framework: List, Set, Map, Queue - Use generic classes, interfaces, and methods |
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