自动生成hashcode和equals方法

右键一键生成import java.util.Objects;

public class Student {

    private String name;
    private int age;

    public Student() {
    }

    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 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);
    }
}

import java.util.HashSet;
import java.util.LinkedList;
import java.util.Set;

public class Main {
    public static void main(String[] args) {
         HashSet <Student> h=new HashSet<Student>();
         Student s1=new Student("库里",30);
         Student s2=new Student("追梦",31);
         Student s3=new Student("克莱",35);
        Student s4=new Student("克莱",35);
         h.add(s1);
        h.add(s2);
        h.add(s3);
        h.add(s4);
       for(Student s:h){
           System.out.println("姓名"+s.getName()+"年龄"+s.getAge());

       }
    }
}