javax.comm "no serial ports found" issue when run BlackBox
I got "no serial ports found" problem when run javax.comm library sample.
My environment:
[OS] WinXP SP3 32bit
[JDK] jdk1.5.0_11
[javax.comm verison] Javacomm20-win32
Description: I placed my javax.comm files into following directories: (reference page)
Solution:
I try to do following change
My environment:
[OS] WinXP SP3 32bit
[JDK] jdk1.5.0_11
[javax.comm verison] Javacomm20-win32
Description: I placed my javax.comm files into following directories: (reference page)
- Copy win32comm.dll to C:\Program Files\Java\ jdk1.5.0_11\jre\bin
- Copy comm.jar to C:\Program Files\Java\ jdk1.5.0_11\jre\lib\ext
- Copy javax.comm.properties to C:\Program Files\Java\ jdk1.5.0_11\jre\lib
I set CLASSPATH as below:
c:\commapi\samples\Blackbox\BlackBox.jar;C:\Program Files\Java\jdk1.5.0_11\jre\lib\ext\comm.jar;C:\commapi\samples\SimpleThen I got "no serial ports found" error when run java BlackBox
Solution:
I try to do following change
- copy win32com.dll to C:\Program Files\Java\jre1.5.0_11\bin
- Copy javax.comm.properties to C:\Program Files\Java\jre1.5.0_11\lib
Then PORT_OWNED correctly.
Additional test: I try to compile SerialDemo and run it. It's works. (reference page)
Additional test: I try to compile SerialDemo and run it. It's works. (reference page)
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