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Thread: Pls Answer...

  1. #1
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    Exclamation Pls Answer...

    I'm using javax.comm package on my m/c. and try to execute the following prob, but it won't giving an error "Caught java.lang.ClassNotFoundException: com.sun.comm.Win32Driver while loading driver com.sun.comm.Win32Driver"

    Here is the prog.
    import java.lang.Enum;
    import java.util.Enumeration;
    import javax.comm.*;
     
    //import javax.print.attribute.standard.MediaSize.Other;
    public class ListPort {
     
     
        public static void main(String args[]) {
            Enumeration port_list = CommPortIdentifier.getPortIdentifiers();
        try {
                while (port_list.hasMoreElements()) {
                    CommPortIdentifier port_id = (CommPortIdentifier) port_list.nextElement();
                    if (port_id.getPortType() == CommPortIdentifier.PORT_SERIAL) {
                        System.out.println("Serial port: " + port_id.getName());
                    } else if (port_id.getPortType() == CommPortIdentifier.PORT_PARALLEL) {
                        System.out.println("Parallel port: " + port_id.getName());
                    } else {
                        System.out.println("Other port: " + port_id.getName());
                    }
                }
            } catch (Exception e) {
                System.out.println("Error : " + e.getMessage());
            }
     
        } // main
    } // class ListPort
    wts wrong with the code or any suggestions ?
    Thanks


  2. #2
    mmm.. coffee JavaPF's Avatar
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    Default Re: Pls Answer...

    What IDE do you use? Have you imported it correctly?
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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  3. #3
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    Default Re: Pls Answer...

    i'm using Netbean IDE 7.0. I've imported it correctly. After debugging the prog. above, i found that port_list has null items. I've checked my COM port, its working, LPT port is also working...

  4. #4
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    Default Re: Pls Answer...

    my netbeans ide doesnt support javax.comm.*;
    absolutely then there must be error sat time .you should use alternative to this one

  5. #5
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    Default Re: Pls Answer...

    Can anybody give the appropriate answer from this forum please?

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