Adding values to int from Array List

I am working on a personal project to create a game. My trouble I seem to be running into is getting my variable called runs to increase value. I have set my value to zero. I tried using runs++ though it only increases by one. What I am looking to do is increase by 1 or 6 depending on the result of the if statement. If anyone can point in the right direction on how to solve would be great!

public class BatsmanDice {

 public static void rollBatsmanDice() {
  // Roll player dice decides how many runs are scored when the player rolls.
  // We have options from 1 to 6 and Owzthat.
  // When Owzthat is triggered we return to the main method and run rollUmpireDice();
  // Using an Array list to have all options available.

  ArrayList batsmanDiceOptions = new ArrayList();
  batsmanDiceOptions.add(1);
  batsmanDiceOptions.add(2);
  batsmanDiceOptions.add(3);
  batsmanDiceOptions.add(4);
  batsmanDiceOptions.add(5);
  batsmanDiceOptions.add(6);
  batsmanDiceOptions.add("Owzthat");

  int runs = 0;
  System.out.println("Total runs " + runs);

  // We take our Array list from above and shuffle it using the Collections import tool.
  Collections.shuffle(batsmanDiceOptions);

  // We then take the shuffled array list and print 1 options to screen showing the dice rolled
  // Commented out print line statement to return a random shuffled array option

  //System.out.println(batsmanDiceOptions.get(1));

  if (batsmanDiceOptions.contains(1)) {
   System.out.println(" Scored 1 Run " + batsmanDiceOptions.get(1));
  }

 }

}