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Java 9

Java 9 (2017):

  1. Module System (Project Jigsaw): Introduced modular programming to Java.
// module-info.java
module com.example.myapp {
    requires java.logging;
    exports com.example.myapp.api;
}

  1. JShell (REPL): Interactive Java shell for quick testing and prototyping.

  2. Improved Javadoc: Added search functionality and HTML5 support.

  3. Collection Factory Methods: Convenient ways to create immutable collections.

List<String> list = List.of("a", "b", "c");
Set<String> set = Set.of("x", "y", "z");
Map<String, Integer> map = Map.of("key1", 1, "key2", 2);
Platform Module System (Project Jigsaw) Interface Private Methods Try-With Resources Anonymous Classes @SafeVarargs Annotation Collection Factory Methods Process API Improvement New Version-String Scheme JShell: The Java Shell (REPL) Process API Improvement Control Panel Stream API Improvement Installer Enhancement for Microsoft windows and many more

Source

  • [Java 9 Features | Java Point]