1 package test;
 2 import java.util.Enumeration;
 3 
 4 import javax.comm.*;
 5 
 6 class serialPort{
 7     
 8     public void ListPort(){
 9         Enumeration en = CommPortIdentifier.getPortIdentifiers();
10         CommPortIdentifier portID;
11         while(en.hasMoreElements()){
12             portID = (CommPortIdentifier)en.nextElement();
13             if(portID.getPortType() == CommPortIdentifier.PORT_SERIAL){
14                 System.out.println(portID.getName());
15                 
16             }
17         }
18         
19     }
20     
21 }
22 public class protect_one {
23 
24     public static void main(String[] args) {
25         serialPort serialport = new serialPort();
26         serialport.ListPort();
27         
28     }
29 }