The JXFS Service has an implementation for WOSA devices. This implementation was provided when there were no real J/XFS device service implementations available in the market. Now that the J/XFS implementations do exist, the Bank Transformation Toolkit maintains this implementation for compatibility reasons only. You should not build new JXFS Service implementations for WOSA devices. For WOSA magnetic stripe devices, the implementation class is com.ibm.dse.jxfsds.wosamsd.WosaMSDService. For WOSA printers, the implementation class is com.ibm.dse.jxfsds.wosaptr.WosaPTRService. Even though these classes implement all the different J/XFS device interfaces, they do not support WOSA features such as power save.
The device service relies on a Java wrapper to access the WOSA/XFS infrastructure. This Java wrapper is located in the com.ibm.dse.wosabean package. The device service must be able to access this wrapper and the BDSEWOSA.DLL (for common WOSA functions) and BDSEWIDC.DLL (for magnetic stripe device calls) JNI libraries.