Name: mc57594 Date: 06/29/99

Calling PrinterJob.print() with a small or negative paper width
or height throws a NegativeArraySizeException or
IllegalArgumentException. These conditions should probably be
tested for or the exceptions caught within the method, and a
PrinterException thrown, hopefully with a meaningful message.

If the width and height are small, I guess the exception
happens when they are rounded to zero at the initial 72dpi. But
if the Graphics is scaled later, these small sizes might be
perfectly acceptable, right?. For example, I could print on
.00001 by .00001 inch paper at ten million dpi - so no positive
paper dimensions should cause an exception.


Here are the stack dumps (java full version "JDK-1.2-V") on Solaris:

java.lang.IllegalArgumentException: Width (0) and height (0) must be > 0
        at java.awt.image.SampleModel.<init>(SampleModel.java:93)
        at java.awt.image.SinglePixelPackedSampleModel.<init>(SinglePixelPackedSampleModel.java:107)
        at java.awt.image.Raster.createPackedRaster(Raster.java:598)
        at java.awt.image.Raster.createPackedRaster(Raster.java:412)
        at java.awt.image.DirectColorModel.createCompatibleWritableRaster(DirectColorModel.java:637)
        at java.awt.image.BufferedImage.<init>(BufferedImage.java:245)
        at sun.java2d.RasterPrinterJob.printPage(RasterPrinterJob.java:467)
        at sun.java2d.RasterPrinterJob.print(RasterPrinterJob.java:235)


java.lang.NegativeArraySizeException:
        at java.awt.image.DataBufferInt.<init>(DataBufferInt.java:48)
        at java.awt.image.Raster.createPackedRaster(Raster.java:404)
        at java.awt.image.DirectColorModel.createCompatibleWritableRaster(DirectColorModel.java:637)
        at java.awt.image.BufferedImage.<init>(BufferedImage.java:245)
        at sun.java2d.RasterPrinterJob.printPage(RasterPrinterJob.java:467)
        at sun.java2d.RasterPrinterJob.print(RasterPrinterJob.java:235)
(Review ID: 84674)
======================================================================
    OK.

        java PrintTest will generate a divide by zero exception
        java PrintTest 1 will generate an IllegalArgumentException
        java PrintTest 2 will generate a NegativeArraySizeException

    all exceptions root from job.print().

    I guess negative values could be caught in Paper.setSize() and
Paper.setImageableArea().


   import java.awt.*;
   import java.awt.print.*;

   public class PrintTest
   {
      public static void main(String args[])
      {
         PrinterJob job = PrinterJob.getPrinterJob();
         PageFormat format = job.defaultPage();
         Paper paper = format.getPaper();
      
         double w = 1, h = .0001; // Generates ArithmeticException: / by zero.
         if(args.length > 0 && args[0].equals("1")) {
            w = .0001; h = 1; } // Generates IllegalArgumentException.
         else if(args.length > 0 && args[0].equals("2")) {
            w = -1; h = 1; } // Generates NegativeArraySizeException.
         paper.setSize(w, h);
         paper.setImageableArea(0, 0, w, h);
         format.setPaper(paper);
         job.setPrintable(
               new Printable() {
                  public int print(Graphics g, PageFormat page_format, int page) {
                     return NO_SUCH_PAGE;
                  }
               }, format);
      
         try {
            job.print(); }
            catch(PrinterException e) {
               System.err.println("Print error:\n" + e.getMessage());
            }
      }
   }