Circuit Negma

C++, C, VB.NET, PCB, Electronics, Circuit Design

Archive for February, 2007

How to install The Java Communications API in a Windows Environment

Posted by Circuit Negma on February 7, 2007

Fix to the previous Port on :: ” How to install The Java Communications API “.

There is a trick to install the Java Communications API correctly on a Windows system Machine. The following files are the core of JAVA Communiccation API, and they are very important to have them installed on your system for a proper operation:

  • comm.jar
  • win32com.dll

For the jdk (Java Developnment Kit) to recognize the serial ports on your machine, it is important to properly place these files in the right folders on your local machine :

%Java_HOME% = the location of your jdk directory.

To Find your JDK directory, Use the Following steps:

1. Click on Start
2. Click on Search
3. Click on For Files or Folders …
4. In the Left hand Side, Click on All Files and Folders
5. Type in jdk* in the textbox under All or part of the file name:
6. Click Search
7. Look for yellow icon that looks like a folder
8. Double Clikc on the folder to open the jdk folder

comm.jar should be placed in:



win32com.dll should be placed in:



    %windir%System32 should be placed in:



Download Link:

coming soon

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How to install The Java Communications API

Posted by Circuit Negma on February 5, 2007

1. Need to download the java API to your local machine.

2. Unzip the File

3. Doublw Click on Install_javaxcomm.bat

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