Use the for-each for loop to cycle through a collection.
import java.util.ArrayList; class ForEachDemo { public static void main(String args[]) { ArrayList<Integer> vals = new ArrayList<Integer>(); vals.add(1); vals.add(2); vals.add(3); vals.add(4); vals.add(5); System.out.print("Original contents of vals: "); for (int v : vals) System.out.print(v + " "); System.out.println(); int sum = 0; for (int v : vals) sum += v; System.out.println("Sum of values: " + sum); } }