Java tutorial
import java.util.Enumeration; import javax.comm.CommPortIdentifier; public class MainClass { public static void main(String[] ap) { Enumeration pList = CommPortIdentifier.getPortIdentifiers(); while (pList.hasMoreElements()) { CommPortIdentifier cpi = (CommPortIdentifier) pList.nextElement(); System.out.print("Port " + cpi.getName() + " "); if (cpi.getPortType() == CommPortIdentifier.PORT_SERIAL) { System.out.println("is a Serial Port: " + cpi); } else if (cpi.getPortType() == CommPortIdentifier.PORT_PARALLEL) { System.out.println("is a Parallel Port: " + cpi); } else { System.out.println("is an Unknown Port: " + cpi); } } } }