Java Programming

Hello,

I am developing a POS Application demo for the Epson TM-T88III printers for serial port communication and trying to print text or bit map images in java.

I have configured all the system and the deployed well with all the necessary jar files and jpos.xml file configured well with JCL editor for the epson printer.

While opening the logical device configured same in jpos.xml file it showing the error as :

jpos.JposException: Could not create an instance.
at jp.co.epson.upos.pntr.CommonPrinterService.createCommInstance(Unknown Source)
at jp.co.epson.upos.pntr.CommonPrinterService.open(Unknown Source)
at jpos.BaseJposControl.open(Unknown Source)
at com.epicomm.pos.gui.POSReceiptPrinterPanel.openPrinter(POSReceiptPrinterPanel.java:382)

I am guessing some solutions on this but i am not sure on it :

1. There may be some configuration problem with jpos.xml file ?
2. The jpos.properties file (from jcl.jar) needs to be updated and deploy new updated jcl.jar ?
3. Any other jar files required for to create instance ?
4. Some system related problem ...?

While the printer is printing some text on serial port from the Epson Specific Tools.

Plese give me your views, comments, solutions on it.

Thanks in Advance,

Sachin Kulkarni
Software Engineer,
EpiComm Technologies.