package com.mydemo.controller;
public class TestEquals {
public static void main(String[] args) {
Dog d1 = new Dog(1, 2, 3);
Dog d2 = new Dog(1, 2, 3);
// d1 永远不等于 d2,比较的是两个对象的引用
System.out.println(d1 == d2);
// Object 的equals 方法默认比较两个对象的引用
System.out.println(d1.equals(d2));
// String 类重写了Object 的equals方法
}
}
class Dog {
int color;
int weight;
int height;
public Dog(int color, int weight, int height) {
this.color = color;
this.weight = weight;
this.height = height;
}
}
