接口课堂作业5.09

根据UML图（省略set和get方法），实现Person类、Student类和Volunteer接口的定义。

要求编写用户测试程序：

     (1) 创建一个学生对象, 要求使用类常量为grade成员变量赋值；(2) 从键盘输入姓名和社团信息，并在控制台输出这些信息。

示例如下：

package package5;
import java.util.Scanner;
interface Volunteer{public String Volunteer(String organization);
}
abstract class Person{private String name;public Person() {}public Person(String name) {this.name=name;}public void SetName(String name) {this.name=name;}public String toString(){return "姓名:    " +name;}
}class Student extends Person implements Volunteer{private int grade;public static final int FRESHMAN=1;public static final int SOPHOMORE=2;public static final int JUNIOR=3;public static final int SENIOR=4;public Student(String name,int grade) {super(name);this.grade=grade;}public String Volunteer(String organization){return organization;}public String toString(){return super.toString()+'\n'+"年级：         "+grade;}
}
public class Test {public static void main(String[] args) {// TODO Auto-generated method stubScanner input=new Scanner(System.in);Student a=new Student(input.nextLine(),Student.SENIOR);System.out.println( a.toString() + "\n" + "所属社团：          " + a.Volunteer(input.nextLine()));input.close();}}