Java8 Supplier

package com.lgx.jdk8.part01;import java.util.function.Supplier;/** * 函数式接口Supplier */public class Test12Supplier {    public static void main(String[] args) {        Supplier<String> supplier = () -> "hello world";        //get方法不接受参数，返回一个结果        System.out.println("supplier = [" + supplier.get() + "]");        //替代不接受参数的工厂方法        Supplier<Student> studentSupplier = () -> new Student();        System.out.println(studentSupplier.get());        //因为Student的构造方法不接受参数，返回一个结果，符合Supplier接口的要求，可以简写如下：        Supplier<Student> studentSupplier2 = Student::new;        System.out.println(studentSupplier2.get());    }}class Student{    private String name = "zhangsan";    private int age = 25;    //删掉这个会报错    public Student() {    }    //加上这个也不报错    public Student(String name, int age) {        this.name = name;        this.age = age;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    @Override    public String toString() {        return "Student{" +                "name='" + name + '\'' +                ", age=" + age +                '}';    }}