封装和继承

•创建Person类，添加属性姓名name和年龄age
•创建Student类(有分数属性)，继承Person类,并设置get和set方法对name和age赋值
•创建Demo类，实例化Student类并在控制台打印姓名name、年龄age和分数score的值

package emp20901;

class Person

{

private int age;

private String name;

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

}

class Student extends Person

{

private int score;

public int getScore() {

return score;

}

public void setScore(int score) {

this.score = score;

}

}

public class Demo {

public static void main(String[] args) {

// TODO Auto-generated method stub

Student s=new Student();

s.setAge(15);

s.setName("小明");

s.setScore(60);

System.out.println("age="+s.getAge()+"\n"+"name="+s.getName()+"\n"+"score="+s.getScore());

}

}