My favorite sort

public class BubbleSort{
    public void bubbleSort(int arr[]){
        for (int i = 0; i < arr.length - 1; i++){
            for (int j = 0; j < arr.length - i - 1; j++){
                if (arr[j] > arr[j + 1]) {
                    int temp = arr[j];
                    arr[j] = arr[j + 1];
                    arr[j + 1] = temp;
                }
            }
        }
    }
    public void toString(int arr[]){
        for(int i = 0; i < arr.length; i++){
            System.out.print(arr[i] + " ");
        }
        System.out.println();
    }
    public static void main(String[] args){
        int[] ll = { 5, 1, 4, 3, 9, 7};
        BubbleSort b = new BubbleSort();
        b.bubbleSort(ll);
        b.toString(ll);
    }
}

BubbleSort.main(null);

1 3 4 5 7 9 

A bubble sort basically compares each variable with each other. Although the time complexity/Big O is bad being O(n^2), I believe it to be the simplest sort to create