package com.mydemo.controller; // 1.getClass().getName() + ‘@‘ + Integer.toHexString(hashCode()) public class TestToString { public static void main(String[] args) { Dog dog = new Dog(); // 3.下面这三个方法都调用了dog 类的toString方法 System.out.println(dog); System.out.println("dog:" + dog); System.out.println("dog:" + dog.toString()); } } // 2.这个类继承了Object 类 class Dog { // 还可以重写Object的toString方法 /*public String toString() { return "I am cool dog"; }*/ }
[email protected] dog:[email protected] dog:[email protected]
运行结果
时间: 2024-08-06 19:02:03