java-面向对象中级-重写equals方法

package com.hspedu.object_;

public class EqualsExercise01 {
    public static void main(String[] args) {
        Person jack = new Person("jack",10,'男');
        Person jack2 = new Person("jack",10,'男');
        System.out.println(jack.equals(jack2));//是否为同一个对象--->false

    }
}
class Person{
    private String name;
    private int age;
    private char gendar;

    //重写object的equals方法
    public boolean equals(Object obj){
        if (this == obj) {
            return true;
        }
        //类型判断
        if (obj instanceof Person){
            //类型转换--->向下转型
            Person p = (Person)obj;
            return  this.name.equals(p.name) && this.age == p.age && this.gendar == p.gendar;
        }
        //如果不是person,直接返回FALSE
        return false;
    }
    public Person(String name, int age, char gendar) {
        this.name = name;
        this.age = age;
        this.gendar = gendar;
    }

    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 char getGendar() {
        return gendar;
    }

    public void setGendar(char gendar) {
        this.gendar = gendar;
    }
}