- Java Modules
- JShell
- Only for beginners
Reference
- Java 9 REPL (JShell)
- Factory Methods for Immutable List, Set, Map and Map.Entry
- Private methods in Interfaces
- Java 9 Module System
- Process API Improvements
- Try With Resources Improvement
- CompletableFuture API Improvements
- Reactive Streams
- Diamond Operator for Anonymous Inner Class
- Optional Class Improvements
- Stream API Improvements
- Enhanced @Deprecated annotation
- HTTP 2 Client
- Multi-Resolution Image API
- Miscellaneous Java 9 Features