Java 9 Immutable Collections Example

Date: 2017-07-05

Java 9 introduced convenient factory methods for creating immutable collections (List, Set, Map). Prior to Java 9, creating immutable collections required more verbose code. These new methods, like List.of(), Set.of(), and Map.of(), provide concise ways to create small, unmodifiable collections. While convenient, it's crucial to remember that these collections, despite being immutable, still possess methods like add() and put(), which will throw UnsupportedOperationException if called. These methods offer a cleaner syntax but require careful handling to avoid unexpected exceptions. Read more: https://examples.javacodegeeks.com/core-java/java-9-immutable-collections-example/