How to remove duplicate Integer elements in array data structure in java

Question

Is there any simple way to remove duplicate elements in Java(will two loops work and how). Thank you:)

IN: int[] arr = {1,3,4,2,3,1,6,7,7};
Output i want is:
{1,3,4,2,6,7}

the only i know is we can traverse it through loop.
 eg.
  for(int i = 0;i < arr.length;i++){
   for(int j = 0;j<arr.length;j++){

        if(    ){
          //what logic i can apply here.      
          }
     }       
   }

Answer 1

This should work..

final Integer[] noDuplicates =
    new LinkedHashSet<>(Arrays.asList(arr)).toArray(new Integer[0]);