Rotate matrix in place

I'm solving the rotate an NxN matrix in place question.

It seems that my code makes a rotation, but leaves an X over the image.
So I'm guessing it's rotating the edges incorrectly. I'm attaching two images as sample input and output.

What's wrong with my code:

public static void rotateRight(float[][] img){
    for (int i=0; i<N/2; i++){
        for (int j=i; j<N-i; j++){
            int J_COMP = N-j-1; //complement of J
            int LEFT = i;
            int RIGHT = N-i-1;
            int TOP = i;
            int BOTTOM = N-i-1;

            float temp = img[J_COMP][LEFT];
            img[J_COMP][LEFT] = img[BOTTOM][J_COMP];
            img[BOTTOM][J_COMP] = img[j][RIGHT];
            img[j][RIGHT] = img[TOP][j];
            img[TOP][j] = temp;
        }
    }       
}