Remove Duplicate from a List in Java

public class Main {

  public static void main(String[] args) {

    // remove duplicates from a list

    List < Integer > list = Arrays.asList(1, 2, 3, 2, 3, 1, 4, 1);

    /*System.out.println("------ With Java 8 -------");
    
    System.out.println(list.stream().distinct().collect(Collectors.toList()));*/
    
    System.out.println("------ Without Java 8 -------");

    List < Integer > l = new ArrayList < > ();

    for (int i = 0; i < list.size(); i++) {
      if (l.contains(list.get(i)) != true) {
        l.add(list.get(i));
      }
    }
    System.out.println(l);

  }

}

==========================================================

Output

[1,2,3,4]

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