java8之构造器引用简单例子

package com.example.demo.java8;

import org.junit.Test;

import java.util.function.BiFunction;
import java.util.function.Function;
import java.util.function.Supplier;


public class ConstructorReference {

    @Test
    public void test1(){
        Supplier s1 = () -> new Employee(12,"威威",78d);
        System.out.println(s1.get());

        //空参构造器
        Supplier s2 = Employee::new;
        System.out.println(s2.get());
    }

    @Test
    public void test2(){
        Function fun1 = id -> new Employee(id);
        System.out.println(fun1.apply(789));

        Function fun2 = Employee::new;
        System.out.println(fun2.apply(789));
    }

    @Test
    public void test3(){
        BiFunction bi1 = (id,name) -> new Employee(id,name);
        System.out.println(bi1.apply(12, "单点的"));

        BiFunction bi2 = Employee::new;
        System.out.println(bi2.apply(12, "单点的"));

    }
}