import java.util.function.Consumer; import java.util.function.Supplier; /** * Java 内置4大核心h函数式接口 —— 供给型接口 * Supplier<T> T get() * @author colorful@TaleLin */ public class FunctionalInterfaceDemo2 { public static void main(String[] args) { Supplier<String> supplier = () -> "只返回，不消费"; String s = supplier.get(); System.out.println(s); } }