Move all negative elements to end in java

Java program for Move all negative elements to end. Here mentioned other language solution.

// Java program for
// Move all negative elements at the end of array
public class MyArray
{
    // Display array elements
    public void display(int[] arr, int n)
    {
        for (int i = 0; i < n; i++)
        {
            System.out.print("  " + arr[i]);
        }
        System.out.println();
    }
    // Swap the given array elements
    public void swap(int[] arr, int start, int end)
    {
        int temp = arr[start];
        arr[start] = arr[end];
        arr[end] = temp;
    }
    // Method which is move negative elements
    public void moveNegative(int[] arr, int n)
    {
        // first index
        int i = 0;
        // last index
        int j = n - 1;
        while (i < j)
        {
            if (arr[i] < 0 && arr[j] >= 0)
            {
                // When [i] index are have negative value 
                // And [j] is positive then swapping elements values
                swap(arr, i, j);
                // Modified index
                i++;
                j--;
            }
            else if (arr[i] >= 0)
            {
                // When element of [i] is not negative
                i++;
            }
            else
            {
                j--;
            }
        }
    }
    public static void main(String[] args)
    {
        MyArray task = new MyArray();
        // Array which are containing positive and negative values
        int[] arr = {
            1 , -1 , 3 , 2 , -7 , -5 , 11 , 6
        };  
        int n = arr.length;
      
        System.out.println("Before Arrange : ");
        // Before move element
        task.display(arr,n);
        // Move negative elements
        task.moveNegative(arr,n);
        // After arrange
        System.out.println("After Arrange : ");
        // After move element
        task.display(arr,n);
    }
}

Output

Before Arrange :
  1  -1  3  2  -7  -5  11  6
After Arrange :
  1  6  3  2  11  -5  -7  -1