How to print a text file contents using java.

Question

Using Input and Output streams I can add and retrive the contents to/from text file. But how to send this file contents to the printer or how to print the file.

Answer 1

Example from my code:
   private void printErrorReport()
      PrintJob pjob = getToolkit().getPrintJob(m_frame,null,null);
      if (pjob != null) {
        Graphics pg = pjob.getGraphics();
        if (pg != null) {
          String s = detailsArea.getText();
          printLongString (pjob, pg, s);
          pg.dispose();
        pjob.end();
// Utility method needed
   void printLongString (PrintJob pjob, Graphics pg, String s) {
     int pageNum = 1;
     int linesForThisPage = 0;
     int linesForThisJob = 0;
     // Note: String is immutable so won't change while printing.
     if (!(pg instanceof PrintGraphics)) {
       throw new IllegalArgumentException ("Graphics context not PrintGraphics");
     StringReader sr = new StringReader (s);
     LineNumberReader lnr = new LineNumberReader (sr);
     String nextLine = "       ";
     int pageHeight = pjob.getPageDimension().height;
     pageHeight -= 20;
     Font helv = new Font("Arial", Font.PLAIN, 12);
     //have to set the font to get any output
     pg.setFont (helv);
     FontMetrics fm = pg.getFontMetrics(helv);
     int fontHeight = fm.getHeight();
     int fontDescent = fm.getDescent();
     int curHeight = 0;
     try {
       do {
         nextLine = lnr.readLine();
         if (nextLine != null) {
           if ((curHeight + fontHeight) > pageHeight) {
             // New Page
             System.out.println ("" + linesForThisPage + " lines printed for page " + pageNum);
             pageNum++;
             linesForThisPage = 0;
             pg.dispose();
             pg = pjob.getGraphics();
             if (pg != null) {
               pg.setFont (helv);
             curHeight = 0;
           curHeight += fontHeight;
           if (pg != null) {
             pg.drawString (nextLine, 0, curHeight - fontDescent);
             linesForThisPage++;
             linesForThisJob++;
           } else {
             System.out.println ("pg null");
       } while (nextLine != null);
     } catch (EOFException eof) {
       // Fine, ignore
     } catch (Throwable t) { // Anything else
       t.printStackTrace();
     System.out.println ("" + linesForThisPage + " lines printed for page " + pageNum);
     System.out.println ("pages printed: " + pageNum);
     System.out.println ("total lines printed: " + linesForThisJob);
     }