What's New in Java 21: Key Features and Examples
What's New in Java 21: Key Features and Examples Java 21, released in September 2024, brings several significant enhancements to the language, building on its strong foundation while introducing features aimed at improving developer productivity and application performance. Here’s a rundown of the key features in Java 21, along with examples to illustrate their use. 1. Pattern Matching for Switch Expressions Java 21 extends pattern matching to switch expressions, allowing for more concise and readable code. This feature simplifies the process of branching based on the type or value of an object. Example: java Copy code public class PatternMatchingDemo { public static String getDayType (String day) { return switch (day) { case "Monday" , "Tuesday" , "Wednesday" , "Thursday" , "Friday" -> "Weekday" ; case "Saturday" , "Sunday" -> "Weekend" ...