Java二级操作题 信息 输出

import java.text.*;

public class Java_2
{
   public static void main(String[] args)
   {
      Person[] people = new Person[2];
      people[0] = new Worker("老张", 30000);
      people[1] = new Student("小王", "计算机科学");
      for (int i = 0; i < people.length; i++)
      {
         Person p = people[i];
         //*********Found**********
         System.out.println(p.getName() + ", " + p.getDescription());
      }
   }
}

//*********Found**********
abstract class Person
{
   public Person(String n)
   {
     name = n;
   }
//*********Found**********
   public abstract String getDescription();
   public String getName()
   {
     return name;
   }
   private String name;
}

//*********Found**********
class Worker extends Person
{
   public Worker(String n, double s)
   {
      super(n);
      salary = s;
   }
   public String getDescription()
   {
      NumberFormat formatter = NumberFormat.getCurrencyInstance();
      return "工人，年薪是 " + formatter.format(salary) + "。";
   }
   private double salary;
}

//*********Found**********
class Student extends Person
{
   public Student(String n, String m)
   {
      super(n);
      major = m;
   }
   public String getDescription()
   {
      return "学生，专业是 " + major + "。";
   }
   private String major;
}