java - Can't load image into buffered image 2D array - 


file newfile = null;     bufferedimage oldimage = null;     bufferedimage newimage = null;     string filename = new string((args[0]));      string newfilename = new string(filename.replacefirst(".png", "-tiled.png"));      try{         oldimage = imageio.read(new file(filename));         system.out.println("reading complete");                 }     catch(ioexception e) {     system.out.println("error: "+ e);     }      int width = oldimage.getwidth();     int height = oldimage.getheight();     newimage = new bufferedimage(width, height, bufferedimage.type_int_rgb);      int imagepixels [][] = new int [height][width];         (int = 0; < height -1; ++i) {         (int j = 0; j < width - 1; ++j) {             imagepixels[i][j] = oldimage.getrgb(i,j); //error here              }     }

it compiles fine, when run program, run 10x10 image, when try , use 800x600 image not work, , error occurs on commented line saying 

"exception in thread "main" java.lang.arrayindexoutofboundsexception: coordinate out of bounds!     @ sun.awt.image.byteinterleavedraster.getdataelements(unknown source)     @ java.awt.image.bufferedimage.getrgb(unknown source)     @ imagery.imagetiler.main(imagetiler.java:35)

can spot irritating error?

a little side info: program gets file name command line , loads rgb pixels 2d array.

any appreciated. cheers.

you've got coordinates wrong way around in getrgb call. image height in y direction, using height bounds of i ... x coordinate.

this page explains java image coordinate system.


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