hi,everyone：
Recently ,i found a strange problem.
I wrote a java file to print all the port on the command line. The source code i attached below:
import java.util.*;
import java.io.*;
import javax.comm.*;
public class listenraw {
public static void main(String argv[]) {
new listenraw();
}
public listenraw() {
CommPortIdentifier portId;
Enumeration ports = CommPortIdentifier.getPortIdentifiers();
if (ports == null) {
System.out.println("No comm ports found!");
return;
}
// print out all ports
System.out.println("printing all ports...");
while (ports.hasMoreElements()) {
System.out.println(" "
+ ((CommPortIdentifier)
ports.nextElement()).getName());
}
}
}
The result was :printing all ports... It meant ports.hasMoreElements() return false.
But from the device manager i found there are COM1 and COM2 occurred.
Can anyone tell me how can i solve the problem.
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