How to print JComponent by printer in real specified size

Question

for example, i want to print JLabel with size 12 cm on paper. What and where should I look for, what do I need to change?
Thanks for answer.

Answer 1

Step 1: Create "PrintExample.java" file for displaying frame._
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.print.*;
import java.awt.geom.*;
public class PrintExample extends JFrame implements ActionListener {
public static void main(String[] args) {
new PrintExample();
public PrintExample() {
super("Printing Swing Components");
WindowShow.setNativeLookAndFeel();
addWindowListener(new ExitListener());
Container content = getContentPane();
JButton printButton = new JButton("Print");
printButton.addActionListener(this);
JPanel buttonPanel = new JPanel();
buttonPanel.setBackground(Color.white);
buttonPanel.add(printButton);
content.add(buttonPanel, BorderLayout.SOUTH);
DrawingPane drawingPanel = new DrawingPane();
content.add(drawingPanel, BorderLayout.CENTER);
setSize(800,300);
setVisible(true);
public void actionPerformed(ActionEvent event) {
PrintableDocument.printComponent(this);
class DrawingPane extends JPanel {
private int fontSize = 90;
private String message = "Roseindia.net";
private int messageWidth;
public DrawingPane() {
setBackground(Color.white);
Font font = new Font("Serif", Font.PLAIN, fontSize);
setFont(font);
FontMetrics metrics = getFontMetrics(font);
messageWidth = metrics.stringWidth(message);
int width = messageWidth*5/3;
int height = fontSize*3;
setPreferredSize(new Dimension(width, height));
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D graph = (Graphics2D)g;
int x = messageWidth/10;
int y = fontSize*5/2;
graph.translate(x, y);
graph.setPaint(Color.lightGray);
AffineTransform origTransform = graph.getTransform();
graph.shear(-0.95, 0);
graph.scale(1, 3);
graph.drawString(message, 0, 0);
graph.setTransform(origTransform);
graph.setPaint(Color.black);
graph.drawString(message, 0, 0);
Step 2: Create "PrintableDocument.java" file for print the display value.
In this step using print() method. This method sets of pages.
PrinterJob : A PrinterJob object should be created using the static getPrinterJob() method.
The PrinterJob class is the principal class that controls printing. An application calls method in this class to set up a job, optionally to invoke a print dialog with the user, and then to print the pages of the job.
Graphic2D:
This Graphics2D class extends the Graphics class to provide more sophisticated control over geometry, coordinate transformations, color management, and text layout. This is the fundamental class for rendering 2-dimensional shapes, text and images on the Java platform.
import java.awt.*;
import javax.swing.*;
import java.awt.print.*;
public class PrintableDocument implements Printable {
private Component compent;
public static void printComponent(Component c) {
new PrintableDocument(c).print();
public PrintableDocument(Component compent) {
this.compent = compent;
public void print() {
PrinterJob printJob = PrinterJob.getPrinterJob();
printJob.setPrintable(this);
if(printJob.printDialog())
try {
printJob.print();
catch(PrinterException pe) {
System.out.println("Error printing: " + pe);
public int print(Graphics g, PageFormat pageFormat, int pageIndex) {
if (pageIndex > 0) {
return(NO_SUCH_PAGE);
else {
Graphics2D graph = (Graphics2D)g;
graph.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
disableBuffering(compent);
compent.paint(graph);
enableBuffering(compent);
return(PAGE_EXISTS);
public static void disableBuffering(Component c) {
RepaintManager currentManager = RepaintManager.currentManager(c);
currentManager.setDoubleBufferingEnabled(false);
public static void enableBuffering(Component c) {
RepaintManager currentManager = RepaintManager.currentManager(c);
currentManager.setDoubleBufferingEnabled(true);
Step 3: Create "WindowShow.java" file for window Look and Feel.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class WindowShow {
public static void setNativeLookAndFeel() {
try{
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
catch(Exception e) {
System.out.println("Error setting native LAF: " + e);
public static JFrame openInJFrame
(Container content, int width, int height, String title, Color bgColor) {
class ExitListener extends WindowAdapter {
public void windowClosing(WindowEvent event) {
System.exit(0);
JFrame frame = new JFrame(title);
frame.setBackground(bgColor);
content.setBackground(bgColor);
frame.setSize(width, height);
frame.setContentPane(content);
frame.addWindowListener(new ExitListener());
frame.setVisible(true);
return(frame);
public static JFrame openInJFrame
(Container content, int width, int height, String title) {
return(openInJFrame(content, width, height, title, Color.green));
public static JFrame openInJFrame(Container content, int width, int height) {
return(openInJFrame(content, width, height,content.getClass().getName(), Color.green));
}