java8 lambda代码Test1

package com.xiuye.lambda;import java.util.function.Function;public class Test1 {interface Num{int get();default String description(){return "返回数字";}default String say(){return "返回数字";}static String sayHello(){return "Hello!";}}interface Func{static String description(){return "传参函数,并调用";}String call();}interface F<T>{//Class::instanceMethodvoid f(T t);}interface Instance<T>{T newInstance();}public static void call(Func f){System.out.println(f.call());}static<T> T newIns(Instance<T> i){return i.newInstance();}public Test1(){System.out.println("我被构造了!");}Void printThis(){call(()->{System.out.println(this);return "OK";});return null;}public static void main(String[] args) {Num x = ()->5;System.out.println(x.description());System.out.println(x.say());System.out.println(Num.sayHello());System.out.println(x.get());call(Num::sayHello);call(x::description);call(Func::description);//Test1 t = new Test1();Test1 t = newIns(Test1::new);t.printThis();Function<Test1,Void> f = Test1::printThis;f.apply(t);F<Test1> ff = Test1::printThis;ff.f(t);}}

返回数字返回数字Hello!5Hello!返回数字传参函数,并调用我被构造了![e-mail][e-mail]1@29724fOK