Java基础 重写toString和equals方法

public class FifthTest12 {
    public static void main(String[] args) {
        Student01 s1=new Student01(666,"北京朝阳");
        Student01 s2=new Student01(666,"北京朝阳");
        System.out.println(s1==s2);
        System.out.println(s1.equals(s2));
    }
}

import java.util.Objects;

public class Student01 {
    int no;
    String school;

    public Student01() {//无参构造
    }

    public Student01(int no,String school) {//有参构造
        this.no = no;
        this.school=school;
    }

    public int getNo() {//set和get方法，封装时加上
        return no;
    }

    public void setNo(int no) {
        this.no = no;
    }

    public String getSchool() {
        return school;
    }

    public void setSchool(String school) {
        this.school = school;
    }

    @Override
    public String toString() {//重写toString方法
        return "Student01{" +
                "no=" + no +
                ", school='" + school + '\'' +
                '}';
    }

    @Override
    public boolean equals(Object o) {//重写equals方法
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        Student01 student01 = (Student01) o;
        return no == student01.no &&
                Objects.equals(school, student01.school);
    }
}