java例程练习（关于重写[overwrite/override])

public class Test {
    public static void main(String[] args) {
        Student student = new Student();
        Person person = new Person();

        person.setName("Tom");
        person.setAge(18);

        student.setName("John");
        student.setAge(19);
        student.setSchool("AHU");

        System.out.println(person.getInfo());
        System.out.println(student.getInfo());

    }
}


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;
    }

    public String getInfo() {
        return "Name: " + getName() + "\n" + "Age: " + getAge();
    }
}

class Student extends Person {
    private String school;

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

    public String getSchool() {
        return school;
    }

    public String getInfo() {
        return "Name: " + getName() + "\n" + "Age: " + getAge()
            + "\nSchool: " + getSchool();
    }
}