菜鸟问题,在线等

Question

.........郁闷啊,看了20分钟,难道偶眼花了..=_=;;;

Answer 1

休息一下  再看就好了
思維定勢

Answer 2

import java.util.*;
import java.io.*;public class VectorExample
{
        public static void main(String args[])
        {
                String a=null;
            Vector ve=new Vector(1,1);
            int i;            BufferedReader bf=new BufferedReader
            (new InputStreamReader(System.in));            System.out.println("enter something");
            try{
                      do
                      {
                          bf.readLine();
                          if(a.length()!=0)
                          ve.addElement(bf.readLine());
                      }
                      while(a.length()!=0);                                System.out.println(ve.size());
                      for(i=0;i<(ve.size());i++)
                      {
                     Object obj=elementAt(i);
                         System.out.println(obj.toString());
                      }
                    }
            catch(IOException e)
            {
                System.out.println(e.toString());
            }
        }  private static Object elementAt(int i) {
    return "";
  }
}搞定了这样就可以通过了