HashSet的学生类练习

package com.czie.iot1913.lps.Set;

import java.util.Objects;

/**
 * @author 1944900433@qq.com
 * @date 2022-03-17 22:12
 */
public class Student {
    private String name;
    private int 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;
    }

    public Student(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public Student() {

    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        Student student = (Student) o;
        return age == student.age && Objects.equals(name, student.name);
    }

    @Override
    public int hashCode() {
        return Objects.hash(name, age);
    }
}

package com.czie.iot1913.lps.Set;

import java.util.HashSet;

/**
 * @author 1944900433@qq.com
 * @date 2022-03-17 22:13
 */
public class HashDemo {
    public static void main(String[] args) {
        HashSet<Student> hs=new HashSet<Student>();
        Student s1 = new Student("刘品水",21);
        Student s2 = new Student("品水",22);
        Student s3 = new Student("品水",22);
        System.out.println(s1.hashCode());
        System.out.println(s2.hashCode());
        System.out.println(s3.hashCode());
        System.out.println("========");
        System.out.println("重地".hashCode());//1179395
        System.out.println("通话".hashCode());//1179395
        System.out.println("=======");
        for(Student s:hs){
            System.out.println(s.getName()+","+s.getAge());
        }

    }
}