java例程练习（extends关键字）

public class Test {
public static void main(String[] args) {
Student student = new Student();
student.setName("John");
student.setAge(18);
student.setSchool("AHU");

System.out.println(student.getName());
System.out.println(student.getAge());
System.out.println(student.getSchool());
}
}

class Person {
private String name;
private int age;
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setAge(int age) {
this.age = age;
}
public int getAge() {
return age;
}
}

class Student extends Person {
private String school;

public void setSchool(String school) {
this.school = school;
}

public String getSchool() {
return school;
}
}