Java tutorial
import java.util.ArrayList; public class Main { public static void main(String[] args) { ArrayList<Integer> arrlist = new ArrayList<Integer>(); arrlist.add(20); arrlist.add(25); arrlist.add(10); arrlist.add(15); System.out.println(arrlist); // list contains element 10 boolean retval = arrlist.contains(10); if (retval == true) { System.out.println("element 10 is contained in the list"); } else { System.out.println("element 10 is not contained in the list"); } // list does not contain element 30 boolean retval2 = arrlist.contains(30); if (retval2 == true) { System.out.println("element 30 is contained in the list"); } else { System.out.println("element 30 is not contained in the list"); } } }