Reputation: 3
i want list of available port in pc i am using this code in java but mot getting response i import javax.comm liabrary . please short out my problem
Thanks
import java.util.Enumeration;
import javax.comm.CommPortIdentifier;
public class CommPortLister {
/** Simple test program. */
public static void main(String[] ap) {
new CommPortLister().list();
}
/** Ask the Java Communications API * what ports it thinks it has. */
protected void list() {
// get list of ports available on this particular computer,
// by calling static method in CommPortIdentifier.
Enumeration pList = CommPortIdentifier.getPortIdentifiers();
// Process the list.
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);
}
}
}
}
Upvotes: 0
Views: 251
Reputation: 2078
I've been using RXTX library successfully to do the same thing your trying to do .Equivalent code using RXTX:
import gnu.io.*;
static void listPorts()
{
java.util.Enumeration<CommPortIdentifier> portEnum = CommPortIdentifier.getPortIdentifiers();
while ( portEnum.hasMoreElements() )
{
CommPortIdentifier portIdentifier = portEnum.nextElement();
System.out.println(portIdentifier.getName() + " - " + getPortTypeName(portIdentifier.getPortType()) );
}
}
static String getPortTypeName ( int portType )
{
switch ( portType )
{
case CommPortIdentifier.PORT_I2C:
return "I2C";
case CommPortIdentifier.PORT_PARALLEL:
return "Parallel";
case CommPortIdentifier.PORT_RAW:
return "Raw";
case CommPortIdentifier.PORT_RS485:
return "RS485";
case CommPortIdentifier.PORT_SERIAL:
return "Serial";
default:
return "unknown type";
}
}
Upvotes: 1