Need some help with 2D Brinting please :)

First I made a test file to see if I can get something to print. That file works correctly and prints. Then I made Receipt.java to print stuff from my project, but the text doesn't print and I don't understand what's the difference between the test file and Receipt.java :confused:. Also, the print output from Receipt.java was a weird line of tiny glyphs at the top of the page which included stuff like these: '' ``.

Receipt.java takes a String array and paragraph width, formats the graphic and then prints it. The test file PrintPage.java does the same thing but from command-line, but it doesn't take the paragraph width.

//Receipt.java

Code:

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package ozzypos;
import java.awt.*;
import java.awt.font.*;
import java.awt.print.*;
import java.text.AttributedCharacterIterator;
import java.text.AttributedString;
public class Receipt implements Printable {
    String msg = "";
    float breakWidth;
    int paragraphStart, paragraphEnd;
    LineBreakMeasurer lineMeasurer = null;
    AttributedString as = null;
    AttributedCharacterIterator paragraph = null;
    FontRenderContext frc = null;
    float drawPosX, drawPosY;
    Receipt(String[] printMsg, float mmWidth) {
        for (String s:printMsg) msg += s;
        System.out.println(msg);
        breakWidth = mmToPixel(mmWidth);
    }
    private float mmToPixel(float mm) {
        float pixels = ((mm/10f)/2.54f)*72f;
        return pixels;
    }
    public int print(Graphics g, PageFormat pf, int page) throws PrinterException {
        if (page > 0) return NO_SUCH_PAGE;
        Graphics2D g2d = (Graphics2D)g;
        g2d.translate(pf.getImageableX(), pf.getImageableY());
        as = new AttributedString(msg);
        paragraph = as.getIterator();
        paragraphStart = paragraph.getBeginIndex();
        paragraphEnd = paragraph.getEndIndex();
        frc = g2d.getFontRenderContext();
        lineMeasurer = new LineBreakMeasurer(paragraph, frc);
        drawPosY = 100;
        lineMeasurer.setPosition(paragraphStart);
        while (lineMeasurer.getPosition() < paragraphEnd) {
            TextLayout layout = lineMeasurer.nextLayout(breakWidth);
            drawPosX = layout.isLeftToRight()? 0 : breakWidth - layout.getAdvance();
            drawPosY += layout.getAscent();
            layout.draw(g2d, drawPosX, drawPosX);
            drawPosY += layout.getDescent() + layout.getLeading();
        }
        return PAGE_EXISTS;
    }
    public void doPrint() {
        PrinterJob job = PrinterJob.getPrinterJob();
        job.setPrintable(this);
        //boolean ok = job.printDialog();
        boolean ok = true;
        if (ok) {
            try {
                  job.print();
            } catch (PrinterException ex) {
              /* The job did not successfully complete */
            }
        }
    }
}

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//Method from another file to print receipt

Code:

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...
        String[] xReportArray = new String[xStrings.size()];
        xStrings.toArray(xReportArray);
        new Receipt(xReportArray, 80).doPrint();

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//The test file which works correctly (command-line)

Code:

Code:

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import java.awt.*;
import java.awt.event.*;
import java.awt.font.*;
import java.awt.print.*;
import java.text.*;
import javax.swing.*;
 
public class PrintPage implements Printable, ActionListener {
    public static float breakWidth = 80;
    public static String msg = "Hello World";
 
    AttributedString as = null;
    AttributedCharacterIterator paragraph = null;
    int paragraphStart, paragraphEnd;
    FontRenderContext frc = null;
    LineBreakMeasurer lineMeasurer = null;
    float drawPosX, drawPosY;
 
    public int print(Graphics g, PageFormat pf, int page) throws PrinterException {
        if (page > 0) return NO_SUCH_PAGE;
        Graphics2D g2d = (Graphics2D)g;
        g2d.translate(pf.getImageableX(), pf.getImageableY());
 
        as = new AttributedString(msg);
        paragraph = as.getIterator();
        paragraphStart = paragraph.getBeginIndex();
        paragraphEnd = paragraph.getEndIndex();
        frc = g2d.getFontRenderContext();
        lineMeasurer = new LineBreakMeasurer(paragraph, frc);
        drawPosY = 0;
 
        lineMeasurer.setPosition(paragraphStart);
        while (lineMeasurer.getPosition() < paragraphEnd) {
            TextLayout layout = lineMeasurer.nextLayout(breakWidth);
            drawPosX = layout.isLeftToRight()? 0 : breakWidth - layout.getAdvance();
            drawPosY += layout.getAscent();
            layout.draw(g2d, drawPosX, drawPosY);
            drawPosY += layout.getDescent() + layout.getLeading();
        }
        return PAGE_EXISTS;
    }
 
    public void actionPerformed(ActionEvent e) {
        PrinterJob job = PrinterJob.getPrinterJob();
        job.setPrintable(this);
        //boolean ok = job.printDialog();
        boolean ok = true;
        if (ok) {
            try {
                  job.print();
            } catch (PrinterException ex) {
              /* The job did not successfully complete */
            }
        }
    }
 
    public static void main(String args[]) {
        String printMsg = "";
        for (String s:args) printMsg += (s + " ");
        msg = printMsg;
        UIManager.put("swing.boldMetal", Boolean.FALSE);
        JFrame f = new JFrame("Hello World Printer");
        f.addWindowListener(new WindowAdapter() {
          public void windowClosing(WindowEvent e) {System.exit(0);}
        });
        JButton printButton = new JButton("Print Hello World");
        printButton.addActionListener(new PrintPage());
        f.add("Center", printButton);
        f.pack();
        f.setVisible(true);
    }
}

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I got this working now. The only way I got it working was by leaving the call to the print job in the static main() method (like in the test file). Still don't know why that is but at least it works.