package List;

import java.util.*;

public class Bf {
       Object a1;
       
       public Bf () {
       }

       public Bf (Object a1) {
	     this.a1=a1;
       }

       public ArrayList bf (Object a1) {
	   //リストa1の最初の要素を取り去る。
   	     ArrayList aa = (ArrayList)a1;
             aa.remove(0);
             return aa;
       } 
}