class Person {
	public String name;
	public int age;
	public Person(String name, int age) {
		this.name = name;
		this.age = age;
	}
	public Person() {
	} // һ룬д캯Student ʲôӰ
	public void getInfo() {
		System.out.println(name);
		System.out.println(age);
	}
}
public class Student extends Person {
	public void study() {
		System.out.println("ѧϰ...");
	}
	public static void main(String[] args) {
		Person p = new Person();
		p.name = "";
		p.age = 35;
		p.getInfo();
		Student s = new Student();
		s.name = "";
		s.age = 18;
		s.getInfo();
		s.study();
	}
}
