Java Communications API (JCA) is really that difficult???

Hi everyone, I am an advanced developer for some years in Microsoft Platforms (.NET, VS6, etc.). I have used Microsoft Programs for a while and I can certainly say that I can develop serious programs.
The reason I am posting this is that I am doing some reaserac in the usability of other programmer platforms for windows and linux.
I turned towards Java about a month ago. I kno very well the structure of the language but I came across something very silly:
I tried to install the javax.comm package! Ha ha ha...
I thought SUN is a serious company (one o the largest) and I keep wondering why this package is so difficult to install. I tried every single post on the forums and nothing worked for me. I am using sdk1.4.1
with SUN Studio One update 1 (formerly Forte, ha ha).
IS THERE ANYONE OUT THERE THAT HAS THE API WORKING ON A WINDOWS 2000 PLATFORM (language doesn't matter but the answer -please- must be in english...) THAT CAN GIVE ME THE MAP OF FILES LIKE:
c:\j2sdk1.4.1\bin\win32comm.dl
c:\j2sdk1.4.1\lib\javax.comm.properties
c:\j2sdk1.4.1\lib\ext\javax.comm
c:\program files\java\j2re1.4.1\lib\javax.comm
Classpath = <somthing>
etc.
Please, I can't get this working. I need to see the damn package in the Studio so that I can work properly..
CAN THIS API ORK WITH THE STANDARD EDITION OF JAVA AND THE COMMUNITY EDITION OF FORTE???

Hi,
Acneto, the jar file must be mounted and the
the parser must be updated. If the api is installed
correctly (finally i have it running) then the ide is
able to compile and run programs that are associated
with the api.That's what I've told you before...I've installed the commAPI in windows 98, Me, 2000 and XP...
The problem with installing the API (I haven't told you before because I thought you already done it...) is with the "java home". Lots of people think that their java home is the jdk\lib and may be the c:\windows\java\lib...or other. And other people think that their java home is c:\windows\java\lib and then discover that is \jdk\lib.
So what I always advice is to make a little problem:
class JavaHome
System.out.println("My java home is:"+System.getProperty("java.home"));
}And so copy the files in the wrong place...
(I don't know if there is a different way to update
the parser database without adding the jar to the
filesystem).I don't think so...anyway, you can mount the jar, update the database, and then unmount!
I will make a post today that indicates a way of
installing the api succesfully under win2K pro with
j2sdk1.4.1 and Sun Studio One update 1 IDE.
By the way, I believe that a special forum regarding
serial and parallel port communications should be
launced by SUN. There are just too many ppl out there
that make such applications.I agree with you!
Best regards,
ANeto

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Hi
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import java.util.*;
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About Java Communication API for Windows

hi
I'm studying Serial Communication in university.
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For no particular reason Sun stopped supporting the windows version
of that package. I use rxtx which happens to allow for much faster
communication too.
The interface is identical to Sun's version, just the package differs: "gnu.io".
kind regards,
Jos

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hi
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Moderator Action:
This duplicate cross-post is locked.
Stay with your original post.
https://forums.oracle.com/thread/2602063
(... and your hijack reply to a third thread has been removed.)

Identifying a comm port using java communication API

HI ALL,
i'm using the communication API to detect the comm port to which my modem is attached.
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then i SOP(c.getName())
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Try putting tha javax.comm.properties file in you <java>/jre/lib folder as well... It worked for me !

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Did you try using that little search field in the upper right hand corner of your browser?

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Hi,
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Thanks,
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// Try the following url
http://users.frii.com/jarvi/rxtx/download.html
matfud

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What about my suggestion in your original post regarding the same question?
http://forum.java.sun.com/thread.jsp?thread=412320&forum=31&message=1814508

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import javax.comm.*;
import java.util.*;
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public static void main(String[] args) {
Enumeration e = CommPortIdentifier.getPortIdentifiers();
while (e.hasMoreElements()) {
System.out.println((CommPortIdentifier) e.nextElement());
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Go back where you downloaded the API and read the FAQ. I think it's the question number 2.

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Hi,
Refer these links,
http://help.sap.com/erp2005_ehp_04/helpdata/EN/83/c70242e5216324e10000000a1550b0/frameset.htm
http://help.sap.com/erp2005_ehp_04/helpdata/EN/32/43d84072378031e10000000a1550b0/frameset.htm
http://help.sap.com/erp2005_ehp_04/helpdata/EN/42/f024227e203ee4e10000000a1553f6/frameset.htm
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import java.io.*;
import java.util.BitSet;
import javax.comm.*;
import java.lang.*;
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                int numChars = in.available();
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//            System.out.println("<== " + s);
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        smsMsg = null;
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        if (strGsm.indexOf("ERROR") != -1) {
            resetGsmObj();
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            resetGsmObj();
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        if (strGsm.indexOf(':') <= 0) {
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            return ("ERROR unexpected answer");
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//        System.out.println("Index: " + str);
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        int endPoint = strGsm.indexOf("\r",startPoint + 1);
        if (endPoint == -1) {
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        str = strGsm.substring(startPoint, endPoint);
        System.out.println("String to be decoded :" + str);
        ComputeSmsData sms = new ComputeSmsData();
        sms.setRcvdPdu(str);
//        SMSCNum = new String(sms.getRcvdPduSMSC());
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        System.out.println("Message: " + sms.getRcvdPduTxt());
        return "OK";
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        return senderNum;
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        return smsMsg;
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        if (lastIndexRead != "") {
            return sendAndRecv("AT+CMGD=" + lastIndexRead, 30);
        return ("ERROR");
}When i compile, there is no error. But when i execute it, the following error comes:
E:\java\JavaSmsApi>javac SerialToGsm.java
E:\java\JavaSmsApi>java SerialToGsm
Exception in thread "main" java.lang.NoSuchMethodError: main
What might be the error? Somebody help me. Thanks in advance.

You are probably trying to run this as a CLDC application instead of a MIDP application (aka a MIDLet). Since CLDC apps start with a main(....) your runtime looks for one but does not find it, hence the error. Please recheck the project configuration.

Need API for Java communicating with RS232

Dear All,
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Thank you very much.
FREDERIC

Cross posted numerous times...
http://forum.java.sun.com/thread.jspa?threadID=634826

Java Communications API (JCA) is really that difficult???

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