http://www.sparetimelabs.com/purejavacomm/purejavacomm.php: PureJavaComm is an Application Programmin Interface (API) for accessing serial ports from Java. PureJavaComm aims to be a drop-in replacement for Sun's (now Oracle) abandoned JavaComm and an easier to deploy alternative to RXTX.
  • Kustaa Nyholm 
package purejavacomm;

public class PureJavaIllegalStateException extends IllegalStateException {

	public PureJavaIllegalStateException(String message) {
		super(message);
	}

	public PureJavaIllegalStateException(Exception e) {
		super(e);
	}
}