Prepare for the Java 21 OCP (1Z0-830) exam with these interactive flashcards and a free practice quiz. The materials cover key Java 21 features in OCP exam style, including:
- Records, Sealed classes, Pattern Matching
- Switch Expressions and Text Blocks
- Streams, Collectors, and Functional Interfaces
- Lambda Expressions and Method References
- Generics and Wildcards
- Modules and Migration Strategies
- Date & Time API with Timezone/DST handling
- Concurrency and Thread Management
- Collections Framework
- Exceptions and Try-with-resources
- I/O & NIO.2 Path operations
- Enums and Optional API
Review key concepts in a concise, practical way:
Comprehensive question and answer format covering different exam topics:
Test your knowledge with a Java 21 OCP-style quiz:
The quiz includes OCP-style questions covering common exam topics.
Contributions and suggestions are welcome! You can submit new flashcards or questions via Pull Request.
See our Contributing Guidelines for more details on how to contribute.
This project is open-source and available under the MIT License.