diff --git a/java/28_sorts/HeapSort.java b/java/28_sorts/HeapSort.java
index 27840493..f25b6f29 100644
--- a/java/28_sorts/HeapSort.java
+++ b/java/28_sorts/HeapSort.java
@@ -71,4 +71,10 @@ private static void heapify(int[] arr, int n, int i) {
         }
     }
 
+	private static void swap(int[] arr, int i, int maxPos) {
+        int tmp = arr[i];
+        arr[i] = arr[maxPos];
+        arr[maxPos] = tmp;
+    }
+
 }
\ No newline at end of file