lamda表达式

业务层：

    /**
     * 测试一下
     */
    @GetMapping("/test")
    public void test(@RequestBody(required = false) List<Person> roster, int low, int high) {
        roster.forEach(p -> test2(p.getAge(), low, high));
    }

    private void test2(int age, int low, int high) {
        if (low <= age && age < high) {
            Person.printPerson(age);
        }
    }

　　工具类

package com.onlyphoto.jupiteragent.controller;

import java.time.LocalDate;


public class Person {

    public enum Sex {
        MALE, FEMALE
    }
    int age;
    String name;
    LocalDate birthday;
    Sex gender;
    String emailAddress;

    public void setAge(int age) {
        this.age = age;
    }

    public Person(int age, String name, LocalDate birthday, Sex gender, String emailAddress) {
        this.age = age;
        this.name = name;
        this.birthday = birthday;
        this.gender = gender;
        this.emailAddress = emailAddress;
    }

    public Person(int age) {
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public LocalDate getBirthday() {
        return birthday;
    }

    public void setBirthday(LocalDate birthday) {
        this.birthday = birthday;
    }

    public Sex getGender() {
        return gender;
    }

    public void setGender(Sex gender) {
        this.gender = gender;
    }

    public String getEmailAddress() {
        return emailAddress;
    }

    public void setEmailAddress(String emailAddress) {
        this.emailAddress = emailAddress;
    }

    public int getAge() {
        // ...
        return this.age;
    }

    public static void printPerson(int age) {
        // ...
//        this.age = age;
        System.out.println("年龄在合适范围的为: " + age);
    }
}