The memory graph Shared by the method

Phone类
package com.itheima_03;
/*
 * 手机类
 */
public class Phone {
    String brand;
    int price;
    String color;
    
    public void call(String name) {
        System.out.println("给"+name+"打电话");
    }
    
    public void sendMessage() {
        System.out.println("群发短信");
    }
}

手机的测试类
package com.itheima_03;
/*
 * 手机类的测试类
 */
public class PhoneDemo2 {
    public static void main(String[] args) {
        Phone p = new Phone();
        p.brand = "小米5s";
        p.price = 1999;
        p.color = "银色";
        System.out.println(p.brand+"---"+p.price+"---"+p.color);
        p.call("林青霞");
        p.sendMessage();
        
        Phone p2 = new Phone();
        p2.brand = "IPhone7S";
        p2.price = 7999;
        p2.color = "土豪金";
        System.out.println(p2.brand+"---"+p2.price+"---"+p2.color);
        p2.call("张曼玉");
        p2.sendMessage();
    }
}

内存图：

main方法执行完毕后，002 003的指向也就没有了，等到垃圾回收器空闲的时候，就会来回收再堆内存的这些垃圾了。