Solved

I/O through the LPT port.

Posted on 1998-02-21
3
289 Views
Last Modified: 2012-06-27
I've bought a K8000 Kit from Velleman. That's an interface specific for domotica. That interface is connected to my computer through my LPT1 port. Is there somenone who knows how to handle parallel communication in Jave ?
0
Comment
Question by:ndb
  • 2
3 Comments
 
LVL 32

Accepted Solution

by:
jhance earned 100 total points
ID: 1233178
Only through a native interface to the host operating system.  Java provides no built-in capabilities to access hardware directly.
0
 
LVL 2

Expert Comment

by:shogi
ID: 1233179
You can always do a open file on the LPTx you need, if it's for simple use. Otherwise you need to write C/C++ DLL to the host operating system, and access it with the JNI (java native interface).

Here an example for LPT1 :

public void printLTP1(String OutPrint)
{
  if (OutPrint != "")
  {
     PrintWriter out = null;
     try
     {
        out = new PrintWriter(new BufferedWriter(new FileWriter("lpt1")));
     }
     catch ( IOException e)
     {}
     out.print(OutPrint);
     out.flush();
     out.close();
}

0
 
LVL 2

Expert Comment

by:shogi
ID: 1233180
forgot one
}  // end of the method PrintLPT1


0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
rhino JavaScript import, load 25 82
Arrays.asList  VS  ArrayList 4 58
web services creation SOAP vs REST 5 40
Desingning Refactoring existing code 2 24
Introduction This article is the first of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article explains our test automation goals. Then rationale is given for the tools we use to a…
In this post we will learn how to connect and configure Android Device (Smartphone etc.) with Android Studio. After that we will run a simple Hello World Program.
The viewer will learn how to implement Singleton Design Pattern in Java.
This tutorial will introduce the viewer to VisualVM for the Java platform application. This video explains an example program and covers the Overview, Monitor, and Heap Dump tabs.

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question