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// 4. Records (final in 16, standard in 17) record Person(String name, int age) {}
// 3. Text Blocks (final in 15, standard in 17) String json = """ { "name": "Java 17", "type": "LTS", "features": ["Sealed classes", "Pattern matching"] } """; java 17 books pdf
// 3. Pattern matching switch static void processResult(Result result) { switch(result) { case Success(String data) -> System.out.println("Data: " + data); case Failure(String error) -> System.err.println("Error: " + error); } } Records record User(String name, String email) {} // 2
(to verify in any book) When evaluating a Java 17 book PDF, ensure it covers these most useful features : Must-Have Features in Java 17 (LTS) // 1. Sealed Classes (preview in 15, final in 17) sealed interface Shape permits Circle, Rectangle, Triangle {} record Circle(double radius) implements Shape {} // 2. Pattern Matching for Switch (final in 17) Object obj = "Hello"; String result = switch(obj) { case Integer i -> "Integer: " + i; case String s -> "String length: " + s.length(); case null -> "It's null"; default -> "Unknown"; }; Records record User(String name
// Test if book covers modern Java public class Java17Validator { // 1. Records record User(String name, String email) {} // 2. Sealed hierarchy sealed interface Result permits Success, Failure {} record Success(String data) implements Result {} record Failure(String error) implements Result {}