Introduction
In this demo I have used NetBeans IDE 8.2 for debugging purpose. But you can use any java programming language compiler as per your availability..
import java.util.ArrayList; import java.util.Collections; public class Javacollectionexcercise { public static void main(String[] args) { ArrayList<String> Stringslist1= new ArrayList<String>(); Stringslist1.add("Audi"); Stringslist1.add("BMW"); Stringslist1.add("Bugatti"); Stringslist1.add("Ford"); Stringslist1.add("Honda"); System.out.println("Array list before Swap:"); for(String a: Stringslist1){ System.out.println(a); } Collections.swap(Stringslist1, 0, 2); System.out.println("Array list after swap:"); for(String b: Stringslist1){ System.out.println(b); } } }