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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);
    }
}