编辑代码

class Main extends Person {
	public static void main(String[] args) {
		new Main("zhangsan", 23, "123").run();
	}

    private String sno = "";

    public Main(String name, int age, String sno) {
        super(name, age);
        this.sno = sno;
    }

    public void run() {
        this.sayName();
    }
}

class Person {
    private String name = "";
    private int age = 0;

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public void sayName() {
        System.out.println(this.name);
    }

    public void sayAge() {
        System.out.println(this.age);
    }
}