2 Dimensional Array That Represents Color Pixels

I have this 2 dimensional array that represents color pixels

RGBColor[][] rgbArray1 = new RGBColor[rows][columns] - so each elemnt in this array is a pixel - (red, green, blue)

I wrote a class named RGBImage. represents an image. the constructor of this class takes RGBColor[][] rgbArray1 as an argument and print the image.

My problem is when i try to rotate the image 90 degrees. because the dimentions are changeing. i'm getting ArrayIndexOutOfBounce Exception.

I know i can to this by create a bigger 2 dimensional array and copy the original , but for this assignment i cant do this .

I must use the original one . now i will show the main method that will get things clearer if i didnt explained well enough.

System.out.println("Constructor with RGBColor[][] Array Parameter:");
RGBColor[][] rgbArray1 = new RGBColor[3][4];
for (int i=0; i<rgbArray1.length;i++)
for (int j=0; j<rgbArray1[0].length;j++)
rgbArray1[i][j] = new RGBColor(i,i,i);

[Code] ....

output:

(0,0,0) (0,0,0) (0,0,0) (0,0,0)
(1,1,1) (1,1,1) (1,1,1) (1,1,1)
(2,2,2) (2,2,2) (2,2,2) (2,2,2)

(2,2,2) (1,1,1) (0,0,0)
(2,2,2) (1,1,1) (0,0,0)
(2,2,2) (1,1,1) (0,0,0)
(2,2,2) (1,1,1) (0,0,0)

This outputs are what i need to accomplish.