资讯详情

package oop1.Demo3;public class pet {public String name;public int age;//无参构造public void shout(){System.out.println("叫了一声");}
}package oop1;import oop1.Demo3.pet;public class Application  {public static void main(String[] args) {pet dog = new pet();dog.name = "旺财";dog.age = 6;dog.shout();System.out.println(dog.name);System.out.println(dog.age);pet cat = new pet();}
}

上述代码在内存结构中的运行如下: