Java graphic coordinates out of bounds?

Hey guys, I'm working on a program that'll let me stitch some pictures together so that I can make a panorama with a few different images. But every time I run the program, it gives me this error:

java.lang.ArrayIndexOutOfBoundsException:
Coordinate out of bounds! (in sun.awt.image.IntergerInterleavedRaster)

and in the terminal window:

java.lang.ArrayIndexOutOfBoundsException: Coordinate out of bounds!
at sun.awt.image.IntegerInterleavedRaster.getDataElem ents(IntegerInterleavedRaster.java:202)
at java.awt.image.BufferedImage.getRGB(BufferedImage. java:871)
at SimplePicture.getBasicPixel(SimplePicture.java:300 )
at Pixel.getAlpha(Pixel.java:72)
at Pixel.setColor(Pixel.java:212)
at Panorama.panorama(PanoramaTester.java:21)
at Panorama.panoramaMaker(PanoramaTester.java:39)
at PanoramaTester.main(PanoramaTester.java:168)

Well here is my code(and in theory it should work, I believe):

import java.awt.*; //import the awt graphics package
class Panorama
{
Panorama()
{
}

public static void panorama(Picture sourcePicture,Picture targetPicture,Pixel sourcePixel,Pixel targetPixel,Color sourceColor,Color targetColor,int xStart)
{
for(int y = 0; y < sourcePicture.getHeight(); y++)
{
for(int x = 0; x < sourcePicture.getWidth(); x++)
{
sourcePixel = sourcePicture.getPixel(x,y);
sourceColor = sourcePixel.getColor();
targetPixel = targetPicture.getPixel(xStart,y);
targetPixel.setColor(sourceColor);
xStart++;
}
}
}

public static void panoramaMaker()
{
Picture targetPicture = new Picture(1150,400);
targetPicture.setAllPixelsToAColor(Color.BLACK);

Pixel sourcePixel = null;
Pixel targetPixel = null;
Color sourceColor = null;
Color targetColor = null;

Picture sourcePicture = new Picture("Mars1.jpg");
int xStart = 0;
panorama(sourcePicture,targetPicture,sourcePixel,t argetPixel,sourceColor,targetColor,xStart);

Picture sourcePicture2 = new Picture("Mars2.jpg");
xStart += 230;
panorama(sourcePicture2,targetPicture,sourcePixel, targetPixel,sourceColor,targetColor,xStart);

Picture sourcePicture3 = new Picture("Mars3.jpg");
xStart += 230;
panorama(sourcePicture3,targetPicture,sourcePixel, targetPixel,sourceColor,targetColor,xStart);

Picture sourcePicture4 = new Picture("Mars4.jpg");
xStart += 230;
panorama(sourcePicture4,targetPicture,sourcePixel, targetPixel,sourceColor,targetColor,xStart);

Picture sourcePicture5 = new Picture("Mars5.jpg");
xStart += 230;
panorama(sourcePicture5,targetPicture,sourcePixel, targetPixel,sourceColor,targetColor,xStart);

//sourcePicture.show();
targetPicture.show();
targetPicture.write("NewMars.jpg");
}
}

I also have a couple other methods that contain effects that I'll apply to the panorama image later. I'm sure I'm making some dumb beginner's mistake, but I welcome all comments and answers.
Thanks in advance!
Joshua

Have you tried changeing the vaules for the xStart on the sourcePictures? I am doing the same thing for an online class and im basically doing the same thing with the same pictures and after i get them to stick together i have to add color affects to it.

What are the values of xStart and y when the error occurs? Are they valid?

I ran the program i dont believe its the x or y coordinates. It says that the targetPixel.setColor(sourceColor); is whats outta of bounds. perhaps its because the pictures arnt in the right postions once ran?

Where are the classes Picture and Pixel defined?
What does the setColor method do?

Quote:

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i dont believe its the x or y coordinates.

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Print them out to be sure.