javax/comm/SerialPortEvent

[musiigedeo]

Hey guys
when I try to execute my jar file, I do get the error

Exception in thread "main" java.lang.NoClassDefFoundError: javax/comm/SerialPortEventListener

It seems that i cannot find the class javax.comm.SerialPortEventListener
but I have in the manifest file included the line "Class-Path: comm.jar". what am I doing wrong guys?

[JavaBean]

I tried to use Java Communicaions API before. The bad news is that most of the installation instructions which basically described which file (dll, jar and a properties file as far as i remember) to copy where, are not working But the good news is that i know one of them working. But i don't remember which one is that. Try them and let us know the result.

[musiigedeo]

I have the following manifest file

Manifest-Version: 1.0
Archive-Sealed: true
Class-Path: comm.jar win32com.dll
Main-Class: net.java.dev.a_jar_stdio_terminal.StdioTerm

I have comm.jar in c:\...jre\lib\ext
win32com.dll in c:\...jre\bin

[musiigedeo]

I have tried all the installations i could find on the net. Which advise would you have for me?

[JavaBean]

Sorry about hat, i am not using that library currently and i can't test them myself..

But what about the properties file? As far as i remember there is a properties file comes with java comm. library.

And you might try to copy the files to JDK relative paths in addition to JRE as you already did.

[musiigedeo]

I have the javax.comm.properties file in C:\Programmer\JBuilder\jre\lib and C:\Programmer\JBuilder\jre\jre\lib

[musiigedeo]

Quote:

Originally Posted by JavaBean

And you might try to copy the files to JDK relative paths in addition to JRE as you already did.

I have copied comm.jar into
%JAVA_HOME%\lib
%JAVA_HOME%\jre\lib\ext

win32com.dll into
%JAVA_HOME%\bin
%JAVA_HOME%\jre\bin
%windir%System32

javax.comm.properties into
%JAVA_HOME%\lib
%JAVA_HOME%\jre\lib

I've done the copying according to the java communication API

But should this affect the functionality of the jar file??

[musiigedeo]

I have found out that when I have the comm.jar file in the same directory as my jar file, then I do not get the error "Exception in thread "main" java.lang.NoClassDefFoundError: javax/comm/SerialPortEventListener"

But when I try to read/write to the serial port, nothing happens... what does wrong?

[musiigedeo]

I have solved my problem. I had 2 java versions on my pc

[Senencillo]

I have the same problem with the comm port. How did you solve this?

When i run the program in Netbeans in mi computer there is no problem, but when i try to execute jar file from console i get this error:

Exception in thread "main" java.lang.NoClassDefFoundError: javax/comm/SerialPortEventListener

Thanks