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import java.io.*;
import javax.comm.*;
import java.util.*;
public class Main
{
public static void main(String[] args)
{
Enumeration ports = CommPortIdentifier.getPortIdentifiers();
while(ports.hasMoreElements())
{
CommPortIdentifier cpi =
(CommPortIdentifier)ports.nextElement();
System.out.println("Port " + cpi.getName());
}
}
}
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