jps - Thanks for bumping this into a new thread.
When I implement the openComm class from previous cash drawer thread, I get the following errors in LogCat:
10-11 21:10:26.810: I/dalvikvm(1525): Could not find method javax.comm.CommPortIdentifier.getPortIdentifiers, referenced from method com.MyDomain.MyProject.AppClasses.openPort.main
10-11 21:10:26.810: W/dalvikvm(1525): VFY: unable to resolve static method 207: Ljavax/comm/CommPortIdentifier;.getPortIdentifiers ()Ljava/util/Enumeration;
Previous Thread: cash drawer
The methods appear in eclipse Intellisense when typing the command: CommPortIdentifier. however when it runs on the tablet it indicates that it is not found.