// Java code to illustrate remove duolicate
    // of ArrayList using hashSet<> method
      
    import java.util.*;
      
    public class GFG {
        public static void main(String args[])
        {
      
            // create a ArrayList String type
            ArrayList<String>
                gfg = new ArrayList<String>();
      
            // Initialize an ArrayList
            gfg.add("Geeks");
            gfg.add("for");
            gfg.add("Geeks");
      
            // print ArrayList
            System.out.println("Original ArrayList : "
                               + gfg);
      
            // -----Using LinkedHashSet-----
            System.out.println("\nUsing LinkedHashSet:\n");
      
            // create a set and copy all value of list
            Set<String> set = new LinkedHashSet<>(gfg);
      
            // create a list and copy all value of set
            List<String> gfg1 = new ArrayList<>(set);
      
            // print ArrayList
            System.out.println("Modified ArrayList : "
                               + gfg1);
      
            // -----Using HashSet-----
            System.out.println("\nUsing HashSet:\n");
      
            // create a set and copy all value of list
            Set<String> set1 = new HashSet<>(gfg);
      
            // create a list and copy all value of set
            List<String> gfg2 = new ArrayList<>(set);
      
            // print ArrayList
            System.out.println("Modified ArrayList : "
                               + gfg2);
        }
    }

Original ArrayList : [Geeks, for, Geeks]

Using LinkedHashSet:

Modified ArrayList : [Geeks, for]

Using HashSet:

Modified ArrayList : [Geeks, for]

// Java code to illustrate remove duolicate
// of ArrayList using hashSet<> method
  
import java.util.*;
import java.util.stream.Collectors;
  
public class GFG {
    public static void main(String args[])
    {
        // create a ArrayList String type
        ArrayList<String>
            gfg = new ArrayList<String>();
  
        // Initialize an ArrayList
        gfg.add("Geeks");
        gfg.add("for");
        gfg.add("Geeks");
  
        // print ArrayList
        System.out.println("Original ArrayList : "
                           + gfg);
  
        // create a list and copy all distinct value of list
        List<String> gfg1 = gfg.stream()
                                .distinct()
                                .collect(Collectors.toList());
  
        // print modified list
        System.out.println("Modified List : " + gfg1);
    }
}

Original ArrayList : [Geeks, for, Geeks]
Modified List : [Geeks, for]