// how to rempves duplicates from array list and pass these as hashset object
import java.util.HashSet; import java.util.ArrayList; public class RemoveDuplicates { public static void removeDuplicates(ArrayList list) { HashSet set = new HashSet(list); list.clear(); list.addAll(set); } public static void main(String args[]) { ArrayList list = new ArrayList(); list.add("a"); list.add("b"); list.add("a"); list.add("c"); list.add("b"); removeDuplicates(list); System.out.println("ArrayList : "); for (Object data : list) { System.out.println(data); } } }