Collection Shuffle in java program

Collection Shuffle

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

public class Main

{

 public static void main(String[] argv) throws Exception

  {

      String[] alpha = { "A", "E", "I", "O", "U" };

      List list = new ArrayList(alpha);

      Collections.shuffle(list);

      System.out.println("list");

   }  

}