Print directly to dot matrix printer

[yesaya handoyo]

Hi all,i want to ask for help.Can anyone teach me how to print directly to a dot matrix printer?Without using any printer driver??Please help me..Thanks a lot..

[Joe Ess]

If your OS and printer supports it, you can access a printer like you would a file, like in this example from the old Java Programmer's FAQ:

     // class that opens the printer as a file
     // and writes "Hello World" to it
 
     import java.io.*;
     public class lpt {
         public static void main (String[] argv) {
             try {
                 FileOutputStream os = new FileOutputStream("LPT1");
                 //wrap stream in "friendly" PrintStream
                 PrintStream ps = new PrintStream(os);
 
                 //print text here
                 ps.println("Hello world!");
 
                 //form feed -- this is important
                 //Without the form feed, the text will simply sit
                 // in print buffer until something else gets printed.
                 ps.print("\f");
                 //flush buffer and close
                 ps.close();
             } catch (Exception e) {
                 System.out.println("Exception occurred: " + e);
             }
         }
     }
    

One thing I feel the need to point out, PrintStream and PrintWriter don't actually have anything to do with printing-to-paper. Their purpose is to make it easy to write formatted representations of objects to a stream, along with some other convenience features.
[ October 09, 2008: Message edited by: Joe Ess ]

[yesaya handoyo]

Ok,thanks a lot..