Problem with Java Communication API

hi
I installed the Java Communication API on win32 platform (as per the guidelines)
Now when I try to run the sample program 'Blackbox' for the serial port, I get an error (in fact an exception is generated inside main function in BlackBox.class file)
I tried the SimpleRead.java example but that too generated the same exception
Can anybody help me out.... I am a novice with Java Comm API

I tried running the sample BlackBox program provided for serial port and now it says
No Serial Ports Found!
I verified that both comm.jar and javax.comm.properties are in the <JDK>\lib directory.
Actually, I am using netBeans IDE 1.4 and I used the C:\J2SDK folder installed with netBeans for the Java Communicaion API
plz help.

Similar Messages

Problem with java communication api for gsm modem port

Hi,every body
    Am using gsm modem in my project previously my linux is 32bit with 32 bit jvm of sun that time there was no problem at the time of working with gsm modem port .But now am using 64bit linux then 32bit files are not supporting to communicate with gsm modem port .How can i get java communication api for unix 64bit ,64bit jvm of sun.please any body help me ...i am searching in sun/oracle also for downloading java communication files of 64bit jvm but i didn't get the link... i need bellow java communication api files.
       ex:1)libLinuxSerialParallel.so
            2)javax.comm.properties
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            4)commtest.jar

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.)

Having problem with Java Communication API

I am using this code to list the port that i have but it does not return any thing. when i compile and run nothing is printed out. i think either its not going in while loop but if i remove while loop it returns NULL. so i think its not recognizing any PORTS. i want to detect a modem port as i want to make a voice mail software. I am jsut starting by listing, opening and listening to the ports. Please help me ASAP. Thank you.
import javax.comm.*;
import java.util.*;
public class PortLister {
public static void main(String[] args) {
Enumeration e = CommPortIdentifier.getPortIdentifiers();
while (e.hasMoreElements()) {
System.out.println((CommPortIdentifier) e.nextElement());
}

Go back where you downloaded the API and read the FAQ. I think it's the question number 2.

Problems with Java Scripting API

Hello Everyone!
Guys, I need help with Java scripting API. A problem is that I cannot understand how can I operate Java Object's fields and methods from the script language. I have chosen embedded javascript to work with. And I can get the fields and methods of in-box java classes (such as ArrayList for example), but I cannot work with methods and fields from my own classes!
Here is an example:
public class ScriptingExample {
    class MyClass {
        int myfield = 5;
        int getInt() {return 7;}
    public void runExample() {
        ScriptEngineManager mgr = new ScriptEngineManager();
        List<ScriptEngineFactory> factories = mgr.getEngineFactories();
        ScriptEngineManager factory = new ScriptEngineManager();
        ScriptEngine engine = factory.getEngineByName("JavaScript");
        MyClass mc = new MyClass();
        try{
            engine.put("mc", mc);
            engine.eval("print(mc.myfield); print(mc.getInt())"); // or engine.eval("print(mc.myfield)");
        } catch (Exception e) {e.printStackTrace();}
} If I run the code with the commented part it prints "undefined" instead of "5".
If I run the code as it is it prints error instead of "7":
undefinedjavax.script.ScriptException: sun.org.mozilla.javascript.internal.EcmaError: TypeError: Cannot find function getInt. (<Unknown source>#1) in <Unknown source> at line number 1
at com.sun.script.javascript.RhinoScriptEngine.eval(Unknown Source)
at com.sun.script.javascript.RhinoScriptEngine.eval(Unknown Source)
at javax.script.AbstractScriptEngine.eval(Unknown Source)
at solutiondatabase.ScriptingExample.runExample(ScriptingExample.java:26)
at solutiondatabase.Main.main(Main.java:49)
How can I fix it?

Guys,
please let me raise this topic because several new questions emerged.
(1) How can I get all the variables created inside my engine?
There are two kinds of variables: first kind is Java obejcts put inside the engine and second kind is the variables created in my script, such as 'var a = 4;'. How can I list all the variables of that two kinds?
(2) Is there is a way to make 'import static' to the engine? I dont want to write MyClass.MyEnum.MyEnumItem every time. Also, I cannot put the whole enum into the engine with engine.put("MyEnum", MyEnum); I can put only enum items separately: engine.put("MyEnum", MyEnum.EnumItemA);. Thats why I ask about static import.
(3) How can I cast engine variables back to java variables inside my java code?
Here is my example:
package mypackage;
import java.util.ArrayList;
import java.util.List;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineFactory;
import javax.script.ScriptEngineManager;
public class Main
     public static void main(String[] args) throws Exception
          ScriptEngineManager mgr = new ScriptEngineManager();
          List<ScriptEngineFactory> factories = mgr.getEngineFactories();
          ScriptEngineManager factory = new ScriptEngineManager();
          ScriptEngine engine = factory.getEngineByName("JavaScript");
          ArrayList<Double> myList = new ArrayList<Double>();
          myList.add(5.0);
          engine.put("MyList", myList);
          engine.eval("MyVar = MyList.get(0);");
          System.out.println((Double)engine.get("MyVar"));
}The result is:
Exception in thread "main" java.lang.ClassCastException: sun.org.mozilla.javascript.internal.NativeJavaObject cannot be cast to java.lang.Double
+     at mypackage.Main.main(Main.java:28)+
Is it possible to retrieve my Double java object from the engine?
Edited by: Dmitry_MSK on Aug 6, 2010 1:56 AM

Problem with java logging API

Hi there
It`s the first time I`m using (I have to use) the standard java logging API.
My need is to integrate it in an existing web-application based on struts.
So my first step was to include the following code into an Struts Action-class:
FileHandler file = new FileHandler("/pathToLogFile/myLogFile.log",true);
file.setFormatter(new SimpleFormatter());
logger.info("create info");
By intention is to have exactly one log-file for the whole application, but indeed I'm getting multiple log-files, even for each request of one and the same Action/Servlet class, like
myLogFile.log
myLogFile.log.1
myLogFile.log.2
myLogFile.log.3
Why does using append=true not work in the constructor of "FileHandler"
Do I have to close the FileHandler each time I've used it?
Is this a known issue?
Thanks for any responds!

@ Stone.li
First, thanks for your answer.
perhaps my question was quite confusing .... but my need is just
to establish the logging API in an existing Web-Application and to have exactly one log-file for the whole application. This means I would have to provide in each servlet a FileHandler referencing to the log-file. I thought it would be part of the job of the logging API to synchronise this file access.

Problem with Java Print API ( awt ) : Migrated from 1.1 to 1.4

We had migrated an application ( applet based) from Java 1.1.8 to java 1.4.
We use the java.awt.print apis for printing data from our applications.
There is difference in print quality after the migration. For e.g. if the data frame had a scroll bar when taken print out, the scroll bar was not visible in java1.1 version application but is being printed with java1.4 version.
We are unable to find the cause of this problem. Any help in this regard would be of great help.
Thanks in advance.

Hi,
thanks, this solved the problem.
Thank you.
Best regards,
Peter

Problem with Java 3D API help!

hellow people,
i'm working working on a 3D game project. My program compiles fine but when it runs it gives me the following error:
Java 3D ERROR : wglGetExtensionsStringARB not support !
- The specified procedure could not be found.
Fallback to use standard ChoosePixelFormat.
Java 3D ERROR : OpenGL 1.2 or better is required (GL_VERSION=1.1)
Exception in thread "J3D-Renderer-1" java.lang.IllegalStateException: GL_VERSION
        at javax.media.j3d.Canvas3D.createNewContext(Native Method)
        at javax.media.j3d.Canvas3D.createNewContext(Canvas3D.java:2429)
        at javax.media.j3d.Renderer.doWork(Renderer.java:747)
        at javax.media.j3d.J3dThread.run(J3dThread.java:250)I tried installing the latest version of openGL , but it still gives the same error.
I'm using GeForce4 MX Intergrated Graphics card on windows pro.

This should be posted in the Java 3D forum. I had the same problem. I had to install directX to fix it. :(

More problems with java query API - getExcerpt fails

If I write my code this way, everything works:
mySearchRequest.setQuery(new oracle.ultrasearch.query.Contains(searchString, metadata));
But if I do this, Document.getExcerpt() starts returning null for the same search hits:
mySearchRequest.setQuery(
new oracle.ultrasearch.query.And(
new oracle.ultrasearch.query.Contains(searchString, metadata),
new oracle.ultrasearch.query.From(metadata.getGroup(groupToSearch))
Does anybody know how to make this work? I need to limit my searches by groups so that I don't have to create a new UltraSearch Instance for every single web site that has to be crawled (I have several).
Troy

Well, I finally discovered he solution on my own, by reverse-engineering Oracle's own search.jsp (which does not use Oracle's custom tag library, btw) (probably because same doesn't really work, or at least it doesn't what's in the documentation doesn't work) (which isn't surprising).
You have to do the "From" part of the query as an "attribute filter".
oracle.ultrasearch.query.Query searchQuery=
new oracle.ultrasearch.query.Contains(searchString, metadata);
oracle.ultrasearch.query.Query attrQuery=
new oracle.ultrasearch.query.From(metadata.getGroup(groupToSearch));
oracle.ultrasearch.query.Request searchRequest=new oracle.ultrasearch.query.Request();
searchRequest.setQuery(searchQuery);
searchRequest.setFilter (attrQuery);
Maybe that will do somebody some good somewhere...
Troy

[End of TNS data channel] with Java SDO API (JDBC thin 9.0.1.2.1)

Hello folks,
Environment:
Win2K, 1.2GHz Intel, 500MB RAM, Oracle 9i, Oracle JDBC Thin (9.0.1.2.1), JDK1.3
Our data in the DB is 2-D. It consists of SDO LineString geometries. We use SRID = 8307.
I run into this problem with Java SDO API. I got this exception: "Io exception: End of TNS data channel"
when I try to execute query that uses the SDO_RELATE function:
SELECT e.shape
FROM edge e
WHERE SDO_RELATE(e.shape,
mdsys.sdo_geometry( 2003, 8307, NULL,
mdsys.sdo_elem_info_array(1,1003,1),
mdsys.sdo_ordinate_array(-125.8,49.9,-125.6,49.9,-125.6,50.0,-125.8,50.0,-125.8,49.9) ),
'mask=ANYINTERACT querytype=WINDOW') = 'TRUE'
If I use SDO_FILTER instead of SDO_RELATE it works!
Here is how I execute the query in Java:
public int executeSpatialQuery(OracleConnection conn, String spatialQuery) throws Exception
int numberOfGeometries = 0;
conn.setDefaultRowPrefetch(1000);
Statement ps = conn.createStatement();
ResultSet rs = ps.executeQuery(spatialQuery);
while (rs.next()) {
numberOfGeometries++;
rs.close();
ps.close();
return numberOfGeometries;
Note: I was playing with the "conn.setDefaultRowPrefetch(n)" method hoping that there might be something to do with that but with no success.
Any help will be much appreciated. Thank you.
GKK

Hello folks,
Here is what I've done:
1. Created a "mini" Realtional model (modelB) which mimics exactly our existing "big" Realtional model (modelA). The tables, sequences, indices, etc. in modelB have been created in exactly the same fashion we'd created the corresponding entities in modelA. The only difference is that I preceeded the entities in our test modelB with "TEST_".
2. Populated the modelB with 1298 Lakes (3993 edges in total) in exatly the same fashion we use to populate our modelA - using a Data Loader based on Java SDO API.
3. Indexed the test modelB in exactly the same fashion as modelA.
4. Ran the query:
SELECT e.shape FROM test_edge e WHERE SDO_RELATE(e.shape,
mdsys.sdo_geometry(
2003,
8307,
NULL,
mdsys.sdo_elem_info_array(1,1003,1),
mdsys.sdo_ordinate_array(
-123.80833332065798,48.58352678668598,
-123.80833332065798,48.675352618459506,
-123.65050767229724,48.675352618459506,
-123.65050767229724,48.58352678668598,
-123.80833332065798,48.58352678668598
), 'mask=ANYINTERACT querytype=WINDOW'
) = 'TRUE'
in SQL*PLUS and it worked fine (retrieved a bunch of geometries)!
Ran the same query in the Daniel Geringer's OraTest utility and it worked this time and returned:
TIME : 1.222 seconds, TOTAL FETCH TIME 267 ROWS
Ran the query with our JCS Query Plug-In and it worked fine!
ANALYSIS
========
ModelA
======
- 59652 Lakes and 178764 edges
- it's properly indexed
- its SDO layers and geometries are valid
- when we count the number of related SDO geometries for this query we get:
SQL> SELECT count(e.shape) FROM edge e WHERE SDO_RELATE(e.shape,
2 mdsys.sdo_geometry(
3 2003,
4 8307,
5 NULL,
6 mdsys.sdo_elem_info_array(1,1003,1),
7 mdsys.sdo_ordinate_array(
8 -123.80833332065798,48.58352678668598,
9 -123.80833332065798,48.675352618459506,
10 -123.65050767229724,48.675352618459506,
11 -123.65050767229724,48.58352678668598,
12 -123.80833332065798,48.58352678668598
13 )
14 ), 'mask=ANYINTERACT querytype=WINDOW'
15 ) = 'TRUE';
COUNT(E.SHAPE)
267
- when we run the following query via the Java SDO API:
SELECT e.shape FROM edge e WHERE SDO_RELATE(e.shape,
mdsys.sdo_geometry(
2003,
8307,
NULL,
mdsys.sdo_elem_info_array(1,1003,1),
mdsys.sdo_ordinate_array(
-123.80833332065798,48.58352678668598,
-123.80833332065798,48.675352618459506,
-123.65050767229724,48.675352618459506,
-123.65050767229724,48.58352678668598,
-123.80833332065798,48.58352678668598
), 'mask=ANYINTERACT querytype=WINDOW'
) = 'TRUE'
it FAILS with: "TNS end of communaction channel"!
ModelB
======
- 1298 Lakes and 3993 edges
- it's properly indexed
- its SDO layers and geometries are valid
- when we count the number of related SDO geometries for this query we get:
SQL> SELECT count(e.shape) FROM test_edge e WHERE SDO_RELATE(e.shape,
2 mdsys.sdo_geometry(
3 2003,
4 8307,
5 NULL,
6 mdsys.sdo_elem_info_array(1,1003,1),
7 mdsys.sdo_ordinate_array(
8 -123.80833332065798,48.58352678668598,
9 -123.80833332065798,48.675352618459506,
10 -123.65050767229724,48.675352618459506,
11 -123.65050767229724,48.58352678668598,
12 -123.80833332065798,48.58352678668598
13 )
14 ), 'mask=ANYINTERACT querytype=WINDOW'
15 ) = 'TRUE';
COUNT(E.SHAPE)
267
- when we run the following query via the Java SDO API:
SELECT e.shape FROM test_edge e WHERE SDO_RELATE(e.shape,
mdsys.sdo_geometry(
2003,
8307,
NULL,
mdsys.sdo_elem_info_array(1,1003,1),
mdsys.sdo_ordinate_array(
-123.80833332065798,48.58352678668598,
-123.80833332065798,48.675352618459506,
-123.65050767229724,48.675352618459506,
-123.65050767229724,48.58352678668598,
-123.80833332065798,48.58352678668598
), 'mask=ANYINTERACT querytype=WINDOW'
) = 'TRUE'
it SUCCESSFULLY returns the related geometries!
So, what can we make of all this? We know that there exists a model for which the SDO_RELATE works via the Java SDO API. This model is a subset (w.r.t. the data set) of our original model in which we detected the "TNS end of communication channel problem". The environment we used for these tests is exactly the same: JDBC Thin driver (version 9.0.1.0.0), Oracle9i Enterprise Edition (Release 9.0.1.2.1 - Production).
One can think that the problem lies in the Oracle Object-Realational or Oracle Spatial but the fact that we can successfully execute the same SDO_RELATE queries in SQL*PLUS rejects this possibility. Perhaps it depends on the amount of data passed to the JDBC driver and the fashion in which it handles it! In our test above we had RELATED 267 geometries. We know that there exist SDO_RELATE queries that run successfully with modelA, but those are queries which ONLY retrieve an EMPTY set of RELATED geometries. In other words we don't get the "TNS end of communication channel" because NO data gets fetched from the server to the client! As soon as we find a SDO_RELATE query which retrieves (RELATES) at least 1 geometry that runs successfully in SQL*PLUS and run it via the Java SDO API - it FAILS! This means that no matter what volume of data is fetched from the server-JDBCThin-SDOAPI-client as long as there is ANY data, the query FAILS in modelA.
Perhaps something internally in the Oracle 9i Server happens that prevent the data being fetch to the JDBCThin for that particular modelA. But what that might be?
Very peculiar problem!
Regards,
Georgi

Java Communications API and Java SDK 1.4.2

I just installed the Java Communications API 2.0 on my Windows XP system, with JDK 1.4.2. As per the install instructions, I copied files from the zip into my /lib and /bin directories and set the classpath. However, when I attempt to compile any of the samples, the compiler displays a large number of errors. I know the API documentation only references JDK1.2 -- are there any special tricks to installing on newer JDKs, or will I need to acquire an older JDK to develop?

My path variable is still not being set! Here is the content of my autoexec.bat located on the root directory of C:\
rem - By Groove Setup
PATH=%PATH%;"C:\Program Files\Groove Networks\Groove\Bin"
PATH=%PATH%;C:\PROGRAM FILES\J2SDK1.4.2_07\BIN
/code]
When I type 'path' at the MSDOS C:\ prompt, I receive the following in the get the following:C:\WINDOWS;C:\WINDOWS\COMMAND;\C:\PROGRAM FILES\GROOVE NETWORKS\GROOVE\BIN
As an aside, I noticed that when I perform a search of the my hard drive (c:\), I find two autoexec.bat files. One at the root, and the other in C:\Windows\Command\EBD.
I believe the instructions stated to modify the autoexec.bat at the root directory.
TIA for any assistance. This is really becoming a nusance and taking up quite a bit of my time trying to resolve this problem.

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

How can i create messenger with java tv API on STB

deal all.
how can i create messenger with java tv API on STB.
how can Xlets communicate each other?
how?
i am interested in xlet communications with java tv.
is it impossible or not?
help all..

You can create a messenger-style application using JavaTV fairly easily. JavaTV supports standard java.net, and so any IP-based connection is pretty easy to do. The hard part of the application will be text input, but people have been using cellphone keypads to send SMS messages for long enough that they're familiar with doing this. This doesn't work well for long messages, where you really need a decent keyboard, but for short SMS-type messages it's acceptable.
The biggest problem that you need to work around is the return channel. Many receivers only have a dial-up connection, ties up the phone line and potentially costs people money if they don't get free local calls. Always-on return channels (e.g. ADSL or cable modem) are still pretty uncommon, so it's something that you nee to think about. Of course, if you do have an always-on connection then this problem just goes away.
This is really one of those cases that's technically do-able, but the infrastructure may not be there to give users a good experience.
Steve.

Problems with Java DOM Mapping

Hi Experts,
as part of my diploma-thesis I have to write a java DOM-Mapping, which mapps the following incoming message:
<mt_MappingOUT>
<set>
<set_Element_01>...</set_Element_01>
<set_Element_02>... </set_Element_02>
<set_Element_03>... </set_Element_02>
<set_Element_10> </set_Element_10>
</set>
</mt_MappingOUT>
to the following outgoinig message:
<mt_MappingIN>
<TABLE>
<item>
<item_FIELD_01> </item_FIELD_01>
<item_FIELD_10> <item_FIELD_10>
<i/tem>
</TABLE>
</mt_MappingIN>
I am not a very experienced Java-Developer. You can see my code down there, which I tried to implement according to some bloggs; unfortunately the result is not what I want to have
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Map;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.Text;
import org.xml.sax.SAXException;
import com.sap.aii.mapping.api.StreamTransformation;
import com.sap.aii.mapping.api.StreamTransformationException;
public class DOMMAPPING implements StreamTransformation{
     public static void main(String[] args) throws Exception
          try
               FileInputStream fin =
                    new FileInputStream("C:/mt_MappingOut.xml");
               FileOutputStream fout =
                    new FileOutputStream("C:/target.xml");
               DOMMAPPING mapping = new DOMMAPPING();
               mapping.execute(fin, fout);
          catch (Exception e)          {
               e.printStackTrace();
public void setParameter (Map param) {}
public void execute (InputStream in, OutputStream out)
     throws com.sap.aii.mapping.api.StreamTransformationException {
          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
          Document documentIn = null;
          DocumentBuilder builder = null;
          try {
                    builder = factory.newDocumentBuilder();
               } catch (ParserConfigurationException e1) {
                    e1.printStackTrace();
          try {
               Element itemNode = null;
               NodeList[] list_f=new NodeList[10];
               Element[] field=new Element[10];
               documentIn = builder.parse(in);
               Document documentOut = builder.newDocument();
               Element rootNode = documentOut.createElementNS("urn:agrp:xi:geissseb","ns0:mt_MappingIn");
               documentOut.appendChild(rootNode);
               Element tableNode = documentOut.createElement("TABLE");
               rootNode.appendChild(tableNode);
               NodeList list_Set=documentIn.getElementsByTagName("set");
               System.out.println(list_Set.getLength());
               for(int j=1;j<10;j++){
                    list_f[j-1]=documentIn.getElementsByTagName("set_ELEMENT_01"+j);
            list_f[9]=documentIn.getElementsByTagName("set_ELEMENT_10");
               //NodeList list_f01=documentIn.getElementsByTagName("f01");
               for (int i=0;i<list_Set.getLength();i++)
                    itemNode=documentOut.createElement("item");
                    tableNode.appendChild(itemNode);
                    for(int k=0; k<10;k++){
                         Node f=list_f[k].item(i);
                         f=f.getFirstChild();
                         String str_f=f.getNodeValue();
                         Text text_f=documentOut.createTextNode(str_f);
                         field[k]=documentOut.createElement("item_FIELD_"(k1));
                         field[k].appendChild(text_f);
                         itemNode.appendChild(field[k]);
               TransformerFactory tf = TransformerFactory.newInstance();
               Transformer transform = tf.newTransformer();
               transform.transform(new DOMSource(documentOut), new StreamResult(out));
               } catch (SAXException e2) {
                    e2.printStackTrace();
               } catch (IOException e2) {
                    e2.printStackTrace();
               }catch (Throwable t) { throw new StreamTransformationException("error", t); }
Unfortunately there seems to be at least one error in there because the result I get is just the following:
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
- <ns0:mt_MappingIn xmlns:ns0="urn:agrp:xi:geissseb">
<TABLE />
</ns0:mt_MappingIn>
Below you will find my source message:
<?xml version="1.0" encoding="UTF-8" ?>
- <xsd:schema targetNamespace="urn:agrp:xi:geissseb" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="urn:agrp:xi:geissseb">
<xsd:element name="mt_MappingOut" type="dt_MappingOut" />
- <xsd:complexType name="dt_MappingOut">
- <xsd:annotation>
<xsd:appinfo source="http://sap.com/xi/TextID">a7a28830bebf11dc81aa001a4b0af224</xsd:appinfo>
</xsd:annotation>
- <xsd:sequence>
- <xsd:element name="Set">
- <xsd:annotation>
<xsd:appinfo source="http://sap.com/xi/TextID">0b366510aeda11dcb3bb00174205b856</xsd:appinfo>
</xsd:annotation>
- <xsd:complexType>
- <xsd:sequence>
- <xsd:element name="f01" type="xsd:string">
- <xsd:annotation>
<xsd:appinfo source="http://sap.com/xi/TextID">0b366511aeda11dcaf2600174205b856</xsd:appinfo>
</xsd:annotation>
</xsd:element>
- <xsd:element name="set_ELEMENT_02" type="xsd:string">
- <xsd:annotation>
<xsd:appinfo source="http://sap.com/xi/TextID">0b366512aeda11dc84d400174205b856</xsd:appinfo>
</xsd:annotation>
</xsd:element>
- <xsd:element name="set_ELEMENT_03" type="xsd:string">
- <xsd:annotation>
<xsd:appinfo source="http://sap.com/xi/TextID">0b366513aeda11dcbcab00174205b856</xsd:appinfo>
</xsd:annotation>
</xsd:element>
- <xsd:element name="set_ELEMENT_04" type="xsd:string">
- <xsd:annotation>
<xsd:appinfo source="http://sap.com/xi/TextID">0b366514aeda11dc96a300174205b856</xsd:appinfo>
</xsd:annotation>
</xsd:element>
- <xsd:element name="set_ELEMENT_05" type="xsd:string">
- <xsd:annotation>
<xsd:appinfo source="http://sap.com/xi/TextID">0b366515aeda11dca77700174205b856</xsd:appinfo>
</xsd:annotation>
</xsd:element>
- <xsd:element name="set_ELEMENT_06" type="xsd:string">
- <xsd:annotation>
<xsd:appinfo source="http://sap.com/xi/TextID">0b366516aeda11dc8f7d00174205b856</xsd:appinfo>
</xsd:annotation>
</xsd:element>
- <xsd:element name="set_ELEMENT_07" type="xsd:string">
- <xsd:annotation>
<xsd:appinfo source="http://sap.com/xi/TextID">0b366517aeda11dcc24b00174205b856</xsd:appinfo>
</xsd:annotation>
</xsd:element>
- <xsd:element name="set_ELEMENT_08" type="xsd:string">
- <xsd:annotation>
<xsd:appinfo source="http://sap.com/xi/TextID">0b366518aeda11dc92cd00174205b856</xsd:appinfo>
</xsd:annotation>
</xsd:element>
- <xsd:element name="set_ELEMENT_09" type="xsd:string">
- <xsd:annotation>
<xsd:appinfo source="http://sap.com/xi/TextID">0b366519aeda11dcc9b100174205b856</xsd:appinfo>
</xsd:annotation>
</xsd:element>
- <xsd:element name="set_ELEMENT_10" type="xsd:string">
- <xsd:annotation>
<xsd:appinfo source="http://sap.com/xi/TextID">0b36651aaeda11dcc5a700174205b856</xsd:appinfo>
</xsd:annotation>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:schema>
When I had problems withe Java SAX Mapping, I got great hints in the forum. So I hope you can help me out again...
Cheers Sebastian

Here you go.
Code
package com.sap.test;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Map;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.apache.crimson.tree.TextNode;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.Text;
import org.xml.sax.SAXException;
import com.sap.aii.mapping.api.StreamTransformationException;
public class DomTest {
     Document documentOut = null;
     public static void main(String[] args) throws Exception
     try
     FileInputStream fin =      new FileInputStream("test.xml");
     FileOutputStream fout = new FileOutputStream("test_out.xml");
     DomTest mapping = new DomTest();
     mapping.execute(fin, fout);
     catch (Exception e) {
     e.printStackTrace();
     public void setParameter (Map param) {}
     public void execute (InputStream in, OutputStream out)
     throws com.sap.aii.mapping.api.StreamTransformationException {
     DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
     Document documentIn = null;
     DocumentBuilder builder = null;
     try {
     builder = factory.newDocumentBuilder();
     } catch (ParserConfigurationException e1) {
     e1.printStackTrace();
     try {
     Element itemNode = null;
     //NodeList[] list_f=new NodeList10;
     //Element[] field=new Element10;
     documentIn = builder.parse(in);
     documentOut = builder.newDocument();
     Element rootNode = documentOut.createElementNS("urn:agrp:xi:geissseb","ns0:mt_MappingIn");
     rootNode.setAttribute("xmlns:ns0", "urn:agrp:xi:geissseb");
     documentOut.appendChild(rootNode);
     Element tableNode = documentOut.createElement("TABLE");
     rootNode.appendChild(tableNode);
     NodeList list_Set = documentIn.getElementsByTagName("set");
     System.out.println(list_Set.getLength());
     for(int j = 0 ; j < list_Set.getLength() ;j++){
          Element setNode = (Element)list_Set.item(j);
          NodeList children = setNode.getChildNodes();
          for(int index = 0; index < children.getLength(); index++)
               Node child = children.item(index);
               if (child instanceof Element) {
                    Element element = (Element) child;
                    if(element.getNodeName().startsWith("set_ELEMENT"))
                         createItemFeildNode(tableNode,element);
     //list_f[9]=documentIn.getElementsByTagName("set_ELEMENT_10");
//     NodeList list_f01=documentIn.getElementsByTagName("f01");
     /*for (int i=0;i<list_Set.getLength();i++)
     itemNode=documentOut.createElement("item");
     tableNode.appendChild(itemNode);
     for(int k=0; k<10;k++){
     Node f=list_f[k].item(i);
     f=f.getFirstChild();
     String str_f=f.getNodeValue();
     Text text_f=documentOut.createTextNode(str_f);
     field[k]=documentOut.createElement("item_FIELD_"(k1));
     field[k].appendChild(text_f);
     itemNode.appendChild(field[k]);
     TransformerFactory tf = TransformerFactory.newInstance();
     Transformer transform = tf.newTransformer();
     transform.transform(new DOMSource(documentOut), new StreamResult(out));
     transform.transform(new DOMSource(documentOut), new StreamResult(System.out));
     } catch (SAXException e2) {
     e2.printStackTrace();
     } catch (IOException e2) {
     e2.printStackTrace();
     }catch (Throwable t) { throw new StreamTransformationException("error", t); }
     private void createItemFeildNode(Element root, Element element) {
          String inName = element.getNodeName();
          int temp = inName.lastIndexOf('_');
          if (temp == -1)
               return;
          String index = inName.substring(temp+1);
          String nodeName = "Item_FIELD_" + index;
          String nodeVal = element.getFirstChild().getNodeValue();
          Element newElement = documentOut.createElement(nodeName);
          Text txtNode = documentOut.createTextNode(nodeVal);
          newElement.appendChild(txtNode);
          root.appendChild(newElement);
Input
<?xml version="1.0" encoding="UTF-8" ?>
<mt_MappingOut xmlns="urn:agrp:xi:geissseb" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:agrp:xi:geissseb file:/D:/Eclipse/workspace/SDN/test.xsd">
<set xmlns="">
<set_ELEMENT_01>E1</set_ELEMENT_01>
<set_ELEMENT_02>E2</set_ELEMENT_02>
<set_ELEMENT_03>E3</set_ELEMENT_03>
<set_ELEMENT_04>E4</set_ELEMENT_04>
<set_ELEMENT_05>E5</set_ELEMENT_05>
<set_ELEMENT_06>E6</set_ELEMENT_06>
<set_ELEMENT_07>E7</set_ELEMENT_07>
<set_ELEMENT_08>E8</set_ELEMENT_08>
<set_ELEMENT_09>E9</set_ELEMENT_09>
<set_ELEMENT_10>E10</set_ELEMENT_10>
</set>
</mt_MappingOut>
Output
<?xml version="1.0" encoding="UTF-8" ?>
<ns0:mt_MappingIn xmlns:ns0="urn:agrp:xi:geissseb">
<TABLE>
<Item_FIELD_01>E1</Item_FIELD_01>
<Item_FIELD_02>E2</Item_FIELD_02>
<Item_FIELD_03>E3</Item_FIELD_03>
<Item_FIELD_04>E4</Item_FIELD_04>
<Item_FIELD_05>E5</Item_FIELD_05>
<Item_FIELD_06>E6</Item_FIELD_06>
<Item_FIELD_07>E7</Item_FIELD_07>
<Item_FIELD_08>E8</Item_FIELD_08>
<Item_FIELD_09>E9</Item_FIELD_09>
<Item_FIELD_10>E10</Item_FIELD_10>
</TABLE>
</ns0:mt_MappingIn>

Java Communications API

Hi
I've written a program to communicate with a circuit with JCA throught LPT Port. I have done this:
import java.io.*;
import java.util.*;
import javax.comm.*;
public class test65{
static Enumeration portList;
static CommPortIdentifier portId;
static int num = 8;
static ParallelPort parPort;
static OutputStream outputStream;
public static void main(String arg[]){
portList = CommPortIdentifier.getPortIdentifiers();
while (portList.hasMoreElements()) {
portId = (CommPortIdentifier) portList.nextElement();
if (portId.getPortType() == CommPortIdentifier.PORT_PARALLEL) {
System.out.println ("Found Parralel Port :"+portId.getName());
if (portId.getName().equals("LPT1")) {
try {
parPort = (ParallelPort)portId.open("Robotics", 2000);
} catch (PortInUseException e) {
System.out.println("ERROR: This port is in use by: "+e.currentOwner+".");
try {
outputStream = parPort.getOutputStream();
} catch (IOException e) {
System.out.println ("ERROR: IO Exception.");
parPort.close();
} catch (NullPointerException e){
System.out.println ("ERROR: OutPutStream could not be Created.");
parPort.close();
try {
System.out.println ("Number "+num+" is about to be sent ....");
System.out.println ("Mode : "+parPort.getMode());
outputStream.write(num); //(1)
System.out.println ("Number "+num+" was Sent.");
} catch (IOException e) {
System.out.println ("ERROR: Could not Write Output");
parPort.close();
in the line that writes num to the stream,(1), program stops and doesn't send anything. If i install a printer then the num is sent to the printer driver to be PRINTED. i don't want to print anything. I've think if there is any driver that sends to the port whatever it recieves. What should i do to send numbers to LPT port like outp and out commands in basic and c ?

When using java communications api you need to simulate a centronics printer circuit in order to get output to the pins all this requires is that you pull pin11 (Busy) low, pin12 (Paper Out) low, and pin15 (Printer Error) High, although I've only had success thus far using spp mode which of course only supports output. Good luck all.

Problem with Java and Windows (Mainly Vista and UAC)

Hi all,
I am having a problem with a program that I've devoloped. The program itself is packaged as a jar and I plan to deploy it across multiple platforms eventually however right now i am only concerned about windows based systems. I have made an installer for a windows baised systems using NSIS to install the software files. I made the installer as I need several java packages to be installed so the program would work (JAI, J3D, JAI ImageIO) and I also require the program to have fileassociations on windows.
I know that this is not what java is about, however the majority of the users will be on windows baised systems so I've decided that OS specific installers is the best option.
During the process I have noticed that there are several key problem with java for this type of application!
The first issue that I have come across is getting file associations to work on java. As a .jar is not an excutable it is not possible to directly associate a filetype with it in java so to overcome this I currently run the program from a .bat files and also the program requires large memory so this also allows me to run the program with -xmx. The batch file that I use is :
<code>
cd PATH TO PROGRAM
start javaw -Dsun.java2d.noddraw=true -Xmn100M -Xms500M -Xmx1000M -jar "PATH TO PROGRAM\program.jar" %1 -vram 134217728
pause;
</code>
Ok so all this appears to work fine and allows windows to have file associations and start the program and thats all works perfectly but this is a non-ideal solution. Has anyone got any advice on improving this?
The next problem that I have appears to be a problem with Vista and UAC (user access control). When a user installs the program and installs the program into the program files directory I found that the program did not work and kept saying that I did not have access to the files in the current directory. This is a problem as I read and write settings files during program execution.
On a Vista system UAC prevents file write operations into the Program Files directory unless the program has requested elevated status even if the user is a full administrator. The probem is that there appears to be no real way to achieve this under java that I'm aware of...
Has anyone else had this probem and has a suitable solution?
Any advice on these issues would realy be appricated.
Regards
Joey

Ok so i've kinda found a solution, its not ideal but its very good. I found this program called Elevate
A link to the site I got it was
http://www.wintellect.com/cs/blogs/jrobbins/archive/2007/03/27/elevate-a-process-at-the-command-line-in-vista.aspx
This program allows you start java with a UAC dialog for high access using
Elevate java -jar myjar.jar
This then allows you to have full access using java... I guess it could be dangerous but it does the job.

Problem with Java Communication API

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