how to get the index of a value in list in java

1import java.util.ArrayList;
2
3public class ArrayListDemo {
4   public static void main(String[] args) {
5      ArrayList<String> arrlist = new ArrayList<String>(5);
6      arrlist.add("G");
7      arrlist.add("E");
8      arrlist.add("F");
9      arrlist.add("M");
10      System.out.println("Size of list: " + arrlist.size());
11      for (String value : arrlist) {
12         System.out.println("Value = " + value);
13      }
14      int retval=arrlist.indexOf("E");
15      System.out.println("The element E is at index " + retval);
16   }
17}