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Oracle Oracle Java ✓ Updated May 2026

Oracle Java SE 8 Programmer II

Exam Code: 1Z0-809
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About the 1Z0-809 Exam

The Oracle Java SE 8 Programmer II exam (1Z0-809) is a comprehensive certification test designed for experienced Java developers who want to demonstrate advanced proficiency in the Java SE 8 platform. Administered by Oracle, this exam validates skills in key areas such as lambda expressions, streams, concurrency, and the Java I/O API. It builds on the foundational knowledge from the Java SE 8 Programmer I exam, focusing on more complex programming concepts and best practices. Passing this exam earns you the Oracle Certified Professional (OCP) status, a globally recognized credential that signals deep expertise in Java development.

This exam is essential for professionals working on enterprise-level applications, where efficient data processing, robust error handling, and scalable code are critical. For example, developers use lambda expressions and streams to simplify collection operations, while the concurrency APIs enable building responsive multi-threaded applications. The 1Z0-809 exam covers these real-world scenarios, ensuring you can optimize performance and maintain code quality in production environments. It's particularly valuable for roles involving microservices, cloud-native applications, or large-scale data processing systems.

By earning the 1Z0-809 certification, you demonstrate to employers that you can tackle complex Java challenges, such as implementing functional interfaces, managing database connections with JDBC, and localizing applications. This certification is a stepping stone for career advancement, often leading to senior developer or architect positions. With 208 practice questions available, you can thoroughly prepare for the exam's rigorous format, which includes multiple-choice and code-based questions. Ultimately, this credential validates your ability to write efficient, maintainable Java code that meets industry standards.

Who Should Take the 1Z0-809 Exam?

This exam is intended for experienced Java developers who have already earned the Java SE 8 Programmer I certification (1Z0-808) or have equivalent knowledge. Typical job roles include Java Developer, Software Engineer, and Systems Architect, with at least 2-3 years of hands-on Java experience. Prerequisites include a solid understanding of Java SE 8 fundamentals, such as object-oriented programming, basic exception handling, and core APIs.

Topics Covered in 1Z0-809

📊
Lambda Expressions and Functional Interfaces
📜
Stream API Operations (Intermediate and Terminal)
💡
Concurrency with java.util.concurrent
🛡️
Java I/O and NIO.2 APIs
🏗️
JDBC and Database Operations
🔧
Localization and Formatting
⚖️
Exception Handling and Assertions
🎯
Generics and Collections Enhancements

Preparation Tips for 1Z0-809

Master lambda expressions and the Stream API by writing code that transforms and filters collections, as these topics appear heavily in the exam.
Practice with concurrency scenarios using ExecutorService and synchronized blocks to understand thread safety and performance trade-offs.
Review the NIO.2 API for file and directory operations, focusing on Path, Files, and Stream-based file reading.
Study JDBC concepts like connection pooling, prepared statements, and transaction management to handle database interactions effectively.
Use the official Oracle documentation and the 208 practice questions to simulate exam conditions and identify weak areas.
Focus on localization and formatting by working with Locale, ResourceBundle, and DateTimeFormatter classes for real-world internationalization.

Frequently Asked Questions — 1Z0-809

What is the passing score for the 1Z0-809 exam?

The passing score for the Oracle Java SE 8 Programmer II exam (1Z0-809) is typically 65%, though Oracle may adjust it slightly. The exam consists of 85 multiple-choice and code-based questions, and you have 150 minutes to complete it. Check the official Oracle website for the most current passing score, as it can vary by region.

Do I need to pass the 1Z0-808 exam before taking 1Z0-809?

Yes, Oracle requires you to hold the Java SE 8 Programmer I certification (1Z0-808) or its equivalent before attempting the 1Z0-809 exam. This prerequisite ensures you have foundational Java knowledge, such as inheritance, polymorphism, and basic exception handling, before tackling advanced topics like lambdas and streams.

How many questions are on the 1Z0-809 exam, and what is the format?

The 1Z0-809 exam contains 85 questions, primarily multiple-choice and code-based scenarios. You'll be asked to analyze code snippets, identify correct implementations, and choose the best approach for given programming tasks. The exam duration is 150 minutes, and you can review the 208 practice Q&As to familiarize yourself with the style and complexity.

How many questions are in the ExamsTree 1Z0-809 study guide?
The ExamsTree 1Z0-809 PDF study guide contains 208+ practice questions with detailed answer explanations, all mapped to the official Oracle exam objectives.

Why Choose ExamsTree?

ExamsTree 1Z0-809 Study Guide is developed by experienced certification professionals with deep knowledge of Oracle technologies. Our team thoroughly researches each exam domain to provide comprehensive, accurate coverage.

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Exam Details
Vendor Oracle
Questions 208+
Format PDF
Updated 5/24/2026
Cert Oracle Java
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