package com.inmind.set02;

import java.util.Objects;

public class Student {
    String name;
    int age;

    public Student(String name, int age) {
        this.name = name;
        this.age = age;
    }
    //如果没有重写equals方法，默认使用==比较地址来判断是否相同
    //已经重写了equals方法，比较属性的内容
    @Override
    public boolean equals(Object o) {
        if (o == null || getClass() != o.getClass()) return false;

        Student student = (Student) o;
        return age == student.age && name.equals(student.name);
    }

    //当前学生类的哈希值，跟内容有关，属性相同的学生对象的哈希值必定相同
    @Override
    public int hashCode() {
        int result = name.hashCode();
        result = 31 * result + age;
        return result;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", age=" + age +
                '}';
    }
}