How to connect to serial port using java

msi_333 · **Posted:** Sat Jun 30, 2007 5:27 pm

This is the code of connecting to serial port and writing streams and reading from it :gOOd:

.This project was already exists on some page . What i did new is changing the GUI to javax.swing .Here in this project you choose a file to send using JFileChooser Dialog. You can then save it at the receiver.I have to say something that sun have a package called java.comm is used for communication .but i found it only for linux and solary .I didn't find version for windows.So i used native functions that is implemented in c/c++ language. I is also can be found with the project .
It is a netBeans project so you will find java codes in src folder .Just remmber to install netbeans to open this project or use java files that exists in src folder.

codemiles123 · **Posted:** Tue Nov 11, 2008 9:50 pm

The link to the serialport.rar file is broken.
Is the file still available?
Thanks

msi_333 · **Posted:** Wed Nov 12, 2008 11:08 am

codemiles123 wrote:

The link to the serialport.rar file is broken.
Is the file still available?
Thanks

check the link , again , :wink:

acadevterm · **Posted:** Mon Sep 14, 2009 11:55 pm

I am getting the following error when I try to run the code in NetBeans 6.5. Anybody know how to fix this?

Initing NATIVE port. Com = \\.\com1, baud = 9600
###ERROR: You can't get input stream because serial port wasn't opened
###ERROR: You can't get input stream because serial port wasn't opened
###ERROR: Couldn't open requested port
preferences file 'JavaTerm.pref' not found / didn't open or there was a problem opening serial port. Searching for serial port
Initing NATIVE port. Com = \\.\com1, baud = 9600
###ERROR: You can't get input stream because serial port wasn't opened
###ERROR: You can't get input stream because serial port wasn't opened
###ERROR: Couldn't open requested port
Initing NATIVE port. Com = \\.\com2, baud = 9600
###ERROR: You can't get input stream because serial port wasn't opened
###ERROR: You can't get input stream because serial port wasn't opened
###ERROR: Couldn't open requested port
Couldn't open any serial ports

Thanks for the help.

msi_333 · **Posted:** Tue Sep 15, 2009 8:19 am

i think you have problem with your ports configurations .

acadevterm · **Posted:** Tue Sep 15, 2009 8:03 pm

So are you saying that this is more of a computer problem than a java problem?? Or is there someway to fix this in the code.

msi_333 · **Posted:** Wed Sep 16, 2009 2:08 am

Yes , because this is what think ! Are you sure that your serial ports are working correctly .

acadevterm · **Posted:** Wed Sep 16, 2009 8:24 pm

I have used them with other programs and they work fine.

msi_333 · **Posted:** Sat Oct 03, 2009 12:44 am

Does it works now. ? Am just concerned to find the actual problem.

vampke · **Posted:** Thu Aug 19, 2010 9:03 pm

I have the same problem: I can connect to my device in vb.net, with you program I cannot. Port settings are correct

How to connect to serial port using java

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