创建对象内存分析

创建对象内存分析

Application.java

package com.oop;

import com.oop.demo03.Pet;

public class Application {
    public static void main(String[] args) {

        Pet dog = new Pet();
        dog.name = "旺财";
        dog.age = 3;
        dog.shout();

        System.out.println(dog.name);
        System.out.println(dog.age);
        
        Pet cat = new Pet();
    }
}

Pet.java 模板

package com.oop.demo03;

public class Pet {

    public String name;//默认为null
    public int age;//默认为0

    //无参构造

    public void shout(){
        System.out.println("叫了一声");
    }
}