How To Print A Text File In Java
Kushal Paudyal December 19th, 2009
You will learn the following in this tutorial.
- - How to read the file content (text) from a file using BufferedReader
- - How to get a PrinterJob
- - How to create a PrintBook and append the Printable Page and Page Format to the book
- - How to show/hide the Print Dialog Box
- - How to set the text color for printing
- - How To Implement A Printable Interface that does the real printing.
- - Some idea about imageable area.
/**
* @author KushalP
* www.sanjaal.com/java
* Last Modified On 2009-05-19
*/
package com.kushal.utils;
import java.awt.*;
import java.awt.font.*;
import java.awt.geom.*;
import java.awt.print.*;
import java.io.BufferedReader;
import java.io.FileReader;
import java.text.*;
/**
* Using JAVA to print simple text file to a printer
*/
public class PrintFileToPrinter implements Printable {
static AttributedString myStyledText = null;
public static void main(String args[]) {
/**Location of a file to print**/
String fileName = "C:/Temp/abc.txt";
/**Read the text content from this location **/
String mText = readContentFromFileToPrint(fileName);
/**Create an AttributedString object from the text read*/
myStyledText = new AttributedString(mText);
printToPrinter();
}
/**
* This method reads the content of a text file.
* The location of the file is provided in the parameter
*/
private static String readContentFromFileToPrint(String fileName) {
String dataToPrint = "";
try {
BufferedReader input = new BufferedReader(new FileReader(fileName));
String line = "";
/**Read the file and populate the data**/
while ((line = input.readLine()) != null) {
dataToPrint += line + "\n";
}
} catch (Exception e) {
return dataToPrint;
}
return dataToPrint;
}
/**
* Printing the data to a printer.
* Initialization done in this method.
*/
public static void printToPrinter() {
/**
* Get a Printer Job
*/
PrinterJob printerJob = PrinterJob.getPrinterJob();
/**
* Create a book. A book contains a pair of page painters
* called printables. Also you have different pageformats.
*/
Book book = new Book();
/**
* Append the Printable Object (this one itself, as it
* implements a printable interface) and the page format.
*/
book.append(new PrintFileToPrinter(), new PageFormat());
/**
* Set the object to be printed (the Book) into the PrinterJob. Doing this
* before bringing up the print dialog allows the print dialog to correctly
* display the page range to be printed and to dissallow any print settings not
* appropriate for the pages to be printed.
*/
printerJob.setPageable(book);
/**
* Calling the printDialog will pop up the Printing Dialog.
* If you want to print without user confirmation, you can directly call printerJob.print()
*
* doPrint will be false, if the user cancels the print operation.
*/
boolean doPrint = printerJob.printDialog();
if (doPrint) {
try {
printerJob.print();
} catch (PrinterException ex) {
System.err.println("Error occurred while trying to Print: "
+ ex);
}
}
}
/**
* This method comes from the Printable interface.
* The method implementation in this class
* prints a page of text.
*/
public int print(Graphics g, PageFormat format, int pageIndex) {
Graphics2D graphics2d = (Graphics2D) g;
/**
* Move the origin from the corner of the Paper to the corner of the imageable
* area.
*/
graphics2d.translate(format.getImageableX(), format.getImageableY());
/** Setting the text color**/
graphics2d.setPaint(Color.black);
/**
* Use a LineBreakMeasurer instance to break our text into lines that fit the
* imageable area of the page.
*/
Point2D.Float pen = new Point2D.Float();
AttributedCharacterIterator charIterator = myStyledText.getIterator();
LineBreakMeasurer measurer = new LineBreakMeasurer(charIterator,
graphics2d.getFontRenderContext());
float wrappingWidth = (float) format.getImageableWidth();
while (measurer.getPosition() < charIterator.getEndIndex()) {
TextLayout layout = measurer.nextLayout(wrappingWidth);
pen.y += layout.getAscent();
float dx = layout.isLeftToRight() ? 0 : (wrappingWidth - layout
.getAdvance());
layout.draw(graphics2d, pen.x + dx, pen.y);
pen.y += layout.getDescent() + layout.getLeading();
}
return Printable.PAGE_EXISTS;
}
}
Here is the printer dialog box that popped up on my screen when I tried to run this program. And of course, it did print the file that I specified.
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Originally posted 2009-05-19 14:22:09.
