Thread: problem

hello,
i need aome help, the code i worte dosn't work and i don't know why...
the code gose like this:
public class RGBImage
{
public RGBImage(int rows, int cols)
{
for (int i = 0 ; i < rows ; i++)
{
for(int j = 0 ; j < cols ; j++)
{
RGBColor[][] pixel = new RGBColor[i][j];//RGBColor class i worte like a week before
}
}
}

public RGBImage (RGBColor pixel[][])
{
for (int i = 0 ; i < pixel.length ; i++)
{
for(int j = 0 ; j < pixel[].length ; j++)//at this point the compiler dosen't work, and i don't know why
{
pixel[i][j] = this.pixel[i][j];
}
}
}
}
why can't i use here in length method? after all its arry...
thankes