Best structure for list of key-value (integer, string) to be shuffled

Question

I need to implement a structure in Java that is a key-value list (of types Integer-String) and I want to shuffle it.

Basically, I would like to do something like that.

Answer 1

Create a Pair class, that holds both the Integer and the String and then add multiple Pair objects to a List, which will be shuffled.

public class Pair {
  private Integer integer;

  private String string;

  //accessors
}

Then:

List list = new ArrayList();
//...add some Pair objects to the list
Collections.shuffle(list);