students.java

java应用程序 这个是自己第一次写的东西 还是初学

/*
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 * and open the template in the editor.
 */
import  java.util.*;
        
/**
 *
 * @author Administrator
 */
public class Students {
    //增加
    public  void    addStudent(String gd,String mj,String cl,String id,String nam){
        stuList.add(new Student(gd,mj,cl,id,nam));
    }
   /* public  void    stat(float[] sc){
        int a=0,b=0,c=0,d=0;
        int sum = 0;
        float curScore = 0f;
        it = stuList.listIterator();
        while(it.hasNext()){
            s = (Student)it.next();
            curScore =s.score;
            if(curScore >89){a++;}
            else    if(curScore>74)b++;
            else    if(curScore>59)c++;
            else    d++;
        }
        sum = a+b+c+d;
        sc[0] = 100f*a/sum;
        sc[1] = 100f*b/sum;
        sc[2] = 100f*c/sum;
        sc[3] = 100f-sc[1]-sc[0]-sc[2];
    }*/
    //按学号查询
    public  Student seek(String id){
        s = null;
        it = stuList.listIterator();
        while(it.hasNext()){
            s = (Student)it.next();
            if(s.ID.equals(id))break;
            else    s= null;
          }
        return s;
          
    }
    /*public  void setScore(String id,float sc){
        it = stuList.listIterator();
        while(it.hasNext()){
            s = (Student)it.next();
            if(s.ID.equals(id));
            s.score = sc;
            break;
     }
    }*/
            
     public List stuList = new ArrayList();
     private    ListIterator    it;
     private    Student s;
           

}