In 1.1.x, it was possible to achieve a printer resolution greater than 72 dpi
by creating an offscreen image at the desired resolution and then calling
one of the versions of PrintGraphics.drawImage which scaled the source image
to the target. This technique was used extensively by many customers, most
notably Adobe with their 100% pure Java Adobe Acrobat Viewer.

In 1.2, this technique no longer works. The image prints at 72 dpi regardless
of the amount of detail in the offscreen image.

To reproduce the problem, download a copy of Adobe Acrobat Viewer for Java
and print any page which includes text. The text will be rendered at 72 dpi.
The text is rendered at 300 dpi when using 1.1.8.

Acrobat Viewer is available at:
  http://www.adobe.com/prodindex/acrviewer/main.html


Name: dsC76792 Date: 08/26/99

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Here is a simplified test case that reproduces the problem.
I run it on jdk1.1.8(build M) and jdk1.3(build O) and
saw the difference.

import java.awt.*;
import java.awt.event.*;

public class ResolutionTest {
    public static void main(String args[]) {
        Frame frame = new Frame("ResolutionTest");
frame.setSize(50, 50);
frame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
frame.setVisible(true);
PrintJob pj = frame.getToolkit().getPrintJob(frame, "ResolutionTest", null);
if (pj != null) {
Graphics g = pj.getGraphics();
            Image image = frame.getToolkit().getImage("duke.gif");
Dimension d = pj.getPageDimension();
g.setColor(Color.black);
            MediaTracker mt = new MediaTracker(frame);
            mt.addImage(image, 0);
            try {
                mt.waitForAll();
            } catch (InterruptedException e) {
                System.err.println("Can't track.");
                return;
            }
            int w = image.getWidth(frame);
            int h = image.getHeight(frame);
            g.drawImage(image, (d.width - w) / 2, (d.height - h) / 2, w / 2, h / 2, frame);
            g.drawRect((d.width - w) / 2, (d.height - h) / 2, w, h);
g.dispose();
pj.end();
            System.err.println("Printing code finished.");
}
    }
}
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