Seperating Order of Even Numbers and After order of Odd numbers with single array in java

import java.util.Arrays;

public class ReArrangeEvenAndOdd {

    static void rearrangeEvenAndOdd(int arr[], int n) {
        // variables
        int j = 0, temp;

        // quick sort method
        for (int i = 0; i < n; i++) {

            // if array of element
            // is odd then swap
            if (arr[i] % 2 == 0) {
                // swap the element
                temp = arr[i];
                arr[i] = arr[j];
                arr[j] = temp;

                j++;
            }
        }
    }

    public static void main(String[] args) {
        int arr[] = {2, 4, 5, 7, 6, 8, 9};
        int n = arr.length;

        rearrangeEvenAndOdd(arr, n);

        System.out.println(Arrays.toString(arr));
    }
}