Java练习（二十三）---构造方法输出固定值&在对象中初始化

public static void main(String[] args) {
        person p = new person();
        int res = p.age;
        System.out.println(res);
        person p1 = new person("小王",15);
        System.out.println("姓名是"+p1.name+"年龄是"+p1.age);
    }
    static class person{
        int age;
        String name;
        public  person(){
            age=18;
        }
        public person(String pname,int page){
            name = pname;
            age = page;
        }
    }

输出结果：
18
姓名是小王年龄是15