FULL PRODUCT VERSION :
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_12-b03)
Java HotSpot(TM) Client VM (build 1.4.2_12-b03, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Linux version 2.6.11-co-0.6.3 (george@CoDebianDevel) (gcc version 3.4.4 20050314
 (prerelease) (Debian 3.4.3-13))

EXTRA RELEVANT SYSTEM CONFIGURATION :
CUPS printing system

A DESCRIPTION OF THE PROBLEM :
validatePage does not return valid PageFormat under linux. It effects in printing 1 inch margins (printers defaults?)
egzample:

//get printerJob ang default pageFormat
PrinterJob javaPrinterJob = java.awt.print.PrinterJob.getPrinterJob();
PageFormat pf = javaPrinterJob.defaultPage();

//set margins to 0
Paper p = javaPageFormat.getPaper();
p.setImageableArea(0.0,0.0,p.getWidth(),p.getHeight());
pf.setPaper(p);

//validate page format
pf = javaPrinterJob.validatePage(pf);
// margins are still set to 0 !


also checked under:
Linux version 2.4.21-0.13mdk (###@###.###) (gcc version 3.2.2 (Mandrake Linux 9.1 3.2.2-3mdk))
(CUPS)
with:
java version "1.4.1_02"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1_02-b06)
Java HotSpot(TM) Client VM (build 1.4.1_02-b06, mixed mode)


Linux version 2.6.16.13 (baggins@duch) (gcc version 3.3.6 (PLD Linux))
(no CUPS)
with:
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
Java HotSpot(TM) Server VM (build 1.5.0_06-b05, mixed mode)



STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
try code included

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
margins set do printer-depended values
ACTUAL -
margins unchanged

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.awt.print.PageFormat;
import java.awt.print.Paper;
import java.awt.print.PrinterJob;

public class TestPrint
{
    public static void main(String[] args) {
// get printerJob ang default pageFormat
        PrinterJob javaPrinterJob = java.awt.print.PrinterJob.getPrinterJob();
        PageFormat pf = javaPrinterJob.defaultPage();
// System.err.println(pf);
 // System.err.println(toString(pf));
// set margins to 0
        Paper p = pf.getPaper();
        p.setImageableArea(0.0,0.0,p.getWidth(),p.getHeight());
        pf.setPaper(p);
        System.err.println(pf);
        System.err.println(toString(pf));
        pf = javaPrinterJob.validatePage(pf);
        System.err.println(pf);
        System.err.println(toString(pf));
    }
    public static String toString(PageFormat javaPageFormat) {
        StringBuffer sb = new StringBuffer();
        sb.append("PageFormat[Orientation= ");
        sb.append(javaPageFormat.getOrientation());
        sb.append(" wymiary=(");
        sb.append(javaPageFormat.getWidth());
        sb.append(", ");
        sb.append(javaPageFormat.getHeight());
        sb.append("), obszar-do-druku=(");
        sb.append(javaPageFormat.getImageableWidth());
        sb.append(", ");
        sb.append(javaPageFormat.getImageableHeight());
        sb.append(") poczatek-obszaru-do-druku=(");
        sb.append(javaPageFormat.getImageableX());
        sb.append(", ");
        sb.append(javaPageFormat.getImageableY());
        sb.append(")] ");
        return sb.toString();
    }
}
---------- END SOURCE ----------