BooleanSupplier 是在“ java.util.function ”包中定义的功能 接口。该接口可用作lambda 表达式 或方法 引用的分配目标。BooleanSupplier接口只有一个方法getAsBoolean(),并返回布尔结果true或false。
@FunctionalInterface public interface BooleanSupplier { boolean getBoolean(); }
import java.util.function.BooleanSupplier; public class BooleanSupplierLambdaTest { public static void main(String[] args) { BooleanSupplier Obj1 = () -> true; BooleanSupplier Obj2 = () -> 5 < 50; // lambda expression BooleanSupplier Obj3 = () -> "nhooo.com".equals("tutorix.com"); System.out.println("Result of Obj1: " + Obj1.getAsBoolean()); System.out.println("Result of Obj2: " + Obj2.getAsBoolean()); System.out.println("Result of Obj3: " + Obj3.getAsBoolean()); } }
输出结果
Result of Obj1: true Result of Obj2: true Result of Obj3: false