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- 1
  - char array to numeric data types - fastest conversionI know i can convert the char array to a string then to the appropiate
    numeric data types (float, double etc) however I'm doing this millions
    of times and throughput is critical. Any ideas if there is SDK function
    or some example code out there that removes the middle step of creating
    a string object.
    
    TIA
- 3
  - HTTP address of user??I've just read a proposal for a new J2EE web system - or maybe a
    cut-down version of an existing one. Regardless, there are some new
    requirements. One of those is to record the IP address of the user.
    
    I'm using Struts, so my Action objects get passed an
    HttpServletRequest object and an HttpServletResponse object. I can't
    figure out how to get the IP address of the user from those things. I
    can get HTTP headers, but it's not there. I can get an HttpSession
    object, but it doesn't seem to be there. There's a ServletContext
    object that can be obtained from the HttpSession, but that doesn't
    seem to do it either.
    
    To complicate matters, this J2EE system runs behind an IIS gateway. Is
    there a simple way to do this, or does the gateway have to be modified
    to pass the IP address as another bit of data?
    
    --
    Tim Slattery
    email***@***.com
- 4
  - CORBA simulatorI'm looking for a CORBA simulator to help develop an application.
    Does any of you have any experience to share or advice?
    
    Bill
- 4
  - How to set font attributes in comboboxI could not make head or tail out of sun's tutorial on
    combobox renderer. The example given is getting compiled and
    running ok, but how to use those things to my program.
    
    relevant lines I have used in my program are given below.
    compiler is giving "can't resolve symbol" on setFont line.
    and when I am changing that fontname to
    normalFont.deriveFont(Font.ITALIC), it is compiling and
    running, but the data that was appearing ok previously, is
    all appearing blank.
    
    I am moving data in combobox and it is appearing. Just that
    its font, size and color is not ok. I want to set font to
    some unicode font, size to 18, color to blue.
    
    If possible, I want different fonts, sizes, colors on
    different parts of same entry in combobox. something like
    set text: (font1, size1, color1) abc (font2, size2, color2) xyz
    
    I have tried <html> as was used on JButtons but that is not
    working.
    
    how to do it?
    thanks.
    -Rawat
    ------------------
    ComboBoxRenderer cbRenderer;
    JComboBox ctrlComboBox;
    
    cbRenderer = new ComboBoxRenderer();
    
    ctrlComboBox = new JComboBox();
    ctrlComboBox.setRenderer(cbRenderer);
    
    class ComboBoxRenderer extends JLabel implements
    ListCellRenderer {
    public ComboBoxRenderer() {
    }
    
    public Component getListCellRendererComponent(
    JList list,
    Object value,
    int index,
    boolean isSelected,
    boolean
    cellHasFocus) {
    setFont("Arial Unicode MS");
    return this;
    }
    }
- 5
  - java numerical library recomendationHi,
    I'm a relative newcomer to Java and I was wondering if there any good
    numerical libraries (on the lines of GSL for C) available? Specifically
    I'm looking for linear algebra routines, least squares and minimization
    routines. I'm interested mainly in Opensource libraries but I am also
    open to commercial libraries.
    
    Thanks,
- 5
  - VM Exception when PrintingHi,
    
    I have 2 clients each using the HP USB printers, and both have the
    same problem. Please can someone tell me what the problem is, or at
    least let me know where I can go to get some answers.
    
    Operating system: Windows 98
    JRE :1.4.2 (downloaded yesterday 2004/09/21)
    Printer :HP 1110 and HP 1010 - USB
    
    Same code works without a problem on Windows 98, Printer HP Deskjet
    540, Lexmark and some others.
    Same code also works on Windows 2000 Printer HP Deskjet 540
    
    The problem:
    
    An unexpected exception has been detected in native code outside the
    VM.
    Unexpected Signal : EXCEPTION_FLT_INVALID_OPERATION (0xc0000090)
    occurred at PC=0x80426F1
    Function=[Unknown.]
    Library=(N/A)
    
    NOTE: We are unable to locate the function name symbol for the error
    just occurred. Please refer to release documentation for
    possible
    reason and solutions.
    
    Current Java thread:
    at java.awt.font.TextLayout$OptInfo.create(TextLayout.java:331)
    at java.awt.font.TextLayout.fastInit(TextLayout.java:689)
    at java.awt.font.TextLayout.<init>(TextLayout.java:476)
    at sun.print.PeekGraphics.drawString(PeekGraphics.java:850)
    at MW.framework.print.DefaultPrintableHeader.print(Unknown Source)
    at MW.framework.print.DefaultPrintable.print(Unknown Source)
    at sun.print.RasterPrinterJob.printPage(RasterPrinterJob.java:1512)
    at sun.print.RasterPrinterJob.print(RasterPrinterJob.java:1110)
    at MW.framework.print.WPrintController.reply(Unknown Source)
    at MW.framework.general.SwitchingService.b(Unknown Source)
    at MW.framework.general.SwitchingService.c(Unknown Source)
    at MW.framework.general.d.run(Unknown Source)
    
    Dynamic libraries:
    0x7CC00000 - 0x7CC1D000 C:\WINDOWS\SYSTEM\IMAGEHLP.DLL
    
    Heap at VM Abort:
    Heap
    def new generation total 4672K, used 3801K [0x10010000, 0x10520000,
    0x109e0000)
    eden space 4160K, 85% used [0x10010000, 0x10384b78, 0x10420000)
    from space 512K, 51% used [0x104a0000, 0x104e19f8, 0x10520000)
    to space 512K, 0% used [0x10420000, 0x10420000, 0x104a0000)
    tenured generation total 60544K, used 8064K [0x109e0000,
    0x14500000, 0x18010000)
    the space 60544K, 13% used [0x109e0000, 0x111c02c8, 0x111c0400,
    0x14500000)
    compacting perm gen total 10496K, used 10399K [0x18010000,
    0x18a50000, 0x1c010000)
    the space 10496K, 99% used [0x18010000, 0x18a37e58, 0x18a38000,
    0x18a50000)
    
    Local Time = Wed Sep 22 11:26:54 2004
    Elapsed Time = 60
    #
    # The exception above was detected in native code outside the VM
    #
    # Java VM: Java HotSpot(TM) Client VM (1.4.2_05-b04 interpreted mode)
    #
    
    Many thanks
    Maureen
- 6
  - Apache Poi set Date Format on a columnHi, I use Apache Poi to read/write from/to Excel.
    
    I'm try to set a column of a sheet to show all values with correct
    format "m/d/yy"
    
    I'm used:
    
    HSSFCellStyle cellStyle = wb.createCellStyle();
    cellStyle.setDataFormat(HSSFDataFormat.getBuiltinFormat("m/d/yy"));
    HSSFCell cellaData = row.createCell(new Integer(0).shortValue());
    cellaData.setCellStyle(cellStyle);
    cellaData.setCellValue(data);
    
    This works fine, but format all cells of sheet and with much rows excel
    return a warning.
    I'm serching a method to format column entire.
    
    Thank's Lorenzo
- 6
  - Need Help on J2SECan you help me code these two programs? i can't figure out how to do
    them.
    
    1. Write a program that displays your name inside a text box on the
    console screen, like this:
    
    +----+
    |Koos|
    +----+
    
    Have the program prompt for a name and drawn the box around it.
    Repeatedly prompt until the user enters "q" or "Q" to quit.
    
    2. Write a program that prints a face, using text characters. Ex.
    
    //////
    | o o |
    (| ^ |)
    | \_/ |
    -----
    
    Thank You
    Can you send your answer to email***@***.com soon.
- 6
  - How to get the root directory ?> I know how to get the user home directory with
    > System.getProperty("user.home"), but I cannot find any
    > system property to get the root directory in a file
    > tree. You know, the "My PC" in Windows or the "/" directory
    > in Unix. Is it possible with java ?
    
    FileSystemView.getFileSystemView().getHomeDirectory()
    
    or
    
    FileSystemView.getFileSystemView().getRoots()[0];
    
    ____________
    
    http://reader.imagero.com the best java image reader.
- 8
  - Why is java considered a language for "web" or "internet" programming?Tom Forsmo wrote:
    >
    > BillJosephson wrote:
    >> But I meant that java, like C and
    >> C++, doesn't seem to have anything special that would make it good for
    >> programming for the web....
    >
    > No not the languages alone, but the platform does. Because of all the
    > libraries and web frameworks that exists for the platform that makes web
    > programming simple.
    >
    > I am not saying it necessarily makes it simpler than e.g. perl or php,
    > but I wouldn't know since I haven't worked in such web project in a long
    > time and therefore don't know much about what libraries/frameworks they
    > use.
    >
    > tom
    Java has very decent Servlet/JSP/JDBC set of tools and APIs for web
    programming, making using Model/View/Controller method of web
    programming relatively easy.
    For this, if you use NetBeans, you get debugger where you can debug live
    servlet, and even debug into JSP page - all this is much easier than in
    any other tools I have seen.
    Also, after deployng all these servlets become preloaded bytecode and
    then preloaded native code - so they run at native speed, which makes
    them much faster than what can be achieved with interpreted language.
- 8
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- 10
  - Need help with regex pleaseI'm trying to validate a phone number value. I have passed the value
    to my constructor as a String type because I would like to catch the
    leading zero in the number. I want to iterate through the String
    phoneNum and confirm that only [0-9] were entered as characters of
    phoneNum. Below is my code attempt which fails:
    
    phoneNum = phoneNum.trim();
    Pattern p = Pattern.compile("\\d");
    boolean found = p.matcher(phoneNum).lookingAt();
    if (!found){
    System.out.println("Error in contact phone number");
    }
    else{
    this.phoneNum = phoneNum;
    System.out.println("Phone number was successfully
    assigned");
    }
    
    Could anyone post code/ideas/principles that could make this idea
    work, please?
    
    Thanks,
    Rick
- 10
  - incomparable typesMany thanks,
    
    That did the trick.
    
    Donna
- 14
  - Axis deserialization of subclassesHi
    
    I'm having a problem with deserializing java subclasses with Axis. Let
    me explain with an example.
    
    Class ParentClass {
    int a;
    }
    
    Class SubClass extends ParentClass {
    int b;
    }
    
    ...
    
    SubClass sc = new SubClass();
    // sendClass is defined to take a ParentClass as parameter in the WSDL
    sendClass(SubClass);
    
    // --- Everythings works well until this point, i.e. my apache server
    receives the SubClass with the extra "int b"-member, eventhough
    sendClass is defined to take ParentClass as paramater.
    
    // Problem:
    // getClass is defined to return ParentClass in the WSDL
    SubClass sc2 = getClass("sc"); // getClass returns SubClass if
    parameter == "sc"
    
    // This is where Axis complains since it doesn't expect the extra
    member "int b" and thereby no SubClass is expected.
    
    Any ideas is highly appreciated.
    
    I've tested axis 1.3, 1.4 and axis2, they all throw me exceptions.
    
    Cheers
- 14
  - RE:FreeTTS gives error Line unavailable...Dear Friend,
    
    I am sorry about it. One of my friend tested the same on freeBSD but I did
    not know about version so I omit it. I think it was 5.x. But in freeBSD my
    friend got the same error.
    
    ./Nikhil
    
    On Wed, 5 Nov 2003 13:52:38 -0500, Lapinski, Michael (Research)
    <email***@***.com> wrote:
    
    > let me get this straight ->Operating System : Red Hat Linux 7.1 KDE
    > 2.2.1
    > and your posting to freebsd-java? i think you got the wrong
    > list.
    >
    > --------------------------------------------------
    > Michael Lapinski
    > Computer Scientist
    > GE Research
    >
    >
    > "I think there is a world market for maybe five computers."
    > - IBM Chairman Thomas Watson, 1943
    >
    >
    > ->-----Original Message-----
    > ->From: Nikhil Sidhaye [mailto:email***@***.com]
    > ->Sent: Wednesday, November 05, 2003 8:39 AM
    > ->To: email***@***.com
    > ->Subject: ->
    > ->
    > ->Dear Friends,
    > ->
    > -> i am able to compile FreeTTS demo programs in linux. ->but when i try
    > to run ->them it gives te error as 'Line unavailable Format is -
    > >PCM_SIGNED, 16000.0 ->Hz, 16 bit, mono, big-endian, audio data' it is
    > able to play ->all the other ->audio files using javax.sound. Though I
    > can use XMMS to play my audio ->files. Also my (arts)sound srver works
    > smoothly on default settings.
    > ->
    > -> However same program works on my windows 98 SE.
    >
    >
    > ->JDK 1.4.0 beta release.
    > ->
    > ->
    > ->./Nikhil
    
    ---------------------------------
    A mind once stretched by a new idea,
    Never regains its original dimensions.
    ---------------------------------
    
    _______________________________________________
    email***@***.com mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-java
    To unsubscribe, send any mail to "email***@***.com"

Author

Message

Joseph Millar

Posted: 2003-7-20 3:03:00

Top

java-programmer, Looking for comments on Technology Rivers Does anyone have any good, bad, or neutral opinions on Technology
Rivers in VA, USA as a company to work for or with? Has anyone
here had any contact with them? I'm currently engaged in a job
search and know little about them besides what's on their wbsite.
Any input would be appreciated. Either posts or direct emails
are welcome.

Thanks.

--Joe

Index ‹ java-programmer

Next
- 1
  - Good web host for JSPs?Hi;
    
    I've been thinking of buying my own domain and setting up my own site.
    
    My dream host would be
    
    - nix based
    
    - Java and JSP friendly.......for me making my own stuff
    
    - PHP, python, perl, C++ - whatever technology friendly so I will be
    free to learn
    
    - reasonably price
    
    I am also in registering my domain anonymously. Any good services?
    
    Any suggestions?
    
    Thanks
- 2
  - extends JFileChooser ?Hi
    In JFileChooser there are some JButton. I have a class called
    PButton that extends JButton. I want JFileChooser use my class
    "PButton" instead of JButton. HowTo?
    
    thanks
    from Peter (email***@***.com)
- 3
  - [NEWBIE] Using a Java Class from a JSP PageHi all and please forgive me for this newbie question.
    
    I should create and utilize the funcionts of a Java Class from a JSP
    page contained in Tomcat.
    
    I Should:
    
    a) define a package containing this class and put it in the CLASSPATH
    
    b) put the Java class in TomCat (folder WEB-INF/lib or WEB-INF/class)
    
    c) a mix of both methods!??! (Classpath AND Tomcat)?!?
    
    Thanks
    
    Federico
- 4
  - Reading windows event file like event viewer from windows/system32/config/AppEvent.evthi ,any one can help ,me to solve my problem.
    i m talking about reading AppEvent.evt SecEvent.evt SysEvent.evt files
    which basically resides in C:\WINDOWS\system32\config folder of
    windows xp.if we want to open that files and our computer is on n/w
    than some services used all three files and i m not able to open that
    files manually.if i want to read that files than i have two options
    either read by event viewer or copy this file and to another place and
    open it in vc++.
    i have to read or parse that file by writing a pure java parser
    without using any dll bcz that files runs under linux there is another
    option to use so(shared object files working as a dll in linux) but i
    don't want to depend on dll and so files.
    one another way microsoft ;log parser but i m not sure that it
    will run on linux or not ,simply i want to write independent java
    program using only java based open source api
    so plz give me a best approach to read or parse this event files when
    they r locked by another applications or services.
    
    this is the link which help u to understand windows event log format
    and it has links of sample program written in vc++,c#,asp.net,c+
    +,php .
    
    http://www.whitehats.ca/main/members/Malik/malik_eventlogs/malik_eventlogs.html
    
    i follow the php program approach but i got only source name,computer
    name,description but not able to parse this things individually and i
    also need date,event id,event type.
    
    then i got another code from code project site,which has functionality
    to read event logs it is using log4j to read this event files.and
    display ti on swing interface but i want only a simple program which
    did only reading or parsing event log files.
    
    http://www.codeproject.com/csharp/tracetool.asp
- 5
  - how to create jar fileHi,
    
    In help we can read:
    
    To create a JAR file from your help files, make the top level help folder
    the current folder. The jar command
    
    descends recursively through the different directories and copies all of the
    files to the JAR file.
    
    Use the following steps to create a JAR file named my_help.jar from the
    hierarchy example above:
    
    C:\> cd ...\help (where "..." is the path above the \help folder) 1.
    
    C:...\help> jar -cvf my_help.jar * 2.
    
    The jar -cvf command copies all the files in the \help folder and in all
    folders hierarchically beneath it into
    
    a JAR file named my_help.jar. As the command creates the JAR file, it
    reports its progress with output like
    
    My error message:
    
    "jar is not recoginized as an internal or external command, operable program
    or
    batch file"
    
    please help me
    
    Edd
- 6
  - Eclipse is slow -- what's the alternative?I'm starting to get tired of Eclipse -- it's slow and pauses frequently.
    
    Does anyone know if there is a way to speed it up? (I'm already giving it
    plenty of memory). Are any speed improvements in the works?
    
    Is it worth switching to another IDE?
- 7
  - chaning label sizes during runtimehi all,
    I have a minor problem in my application (sorry I can't post any code,
    so I'vm only asking for guidance in the general case, not this
    specific one).
    In my application I have a number of JLabels that gets their texts
    changed during runtime. Unfortunatley it seems that they sometimes
    become too wide for the panel they are in. The panel has room to grow
    though (it is located in a jscrollpane).
    I use
    label.invalidate();
    after each change, and
    validateTree();
    on the top container after all changes.
    This gives me a somewhat strange behavour though.
    On first run nothing happens (i.e the label get's cut)
    on second run, the panel to the left shrinks a bit and the lables
    there get's cut. On the third run all looks nice.
    (run means updating of the labels, not a re-run of the application)
    
    So what is the best way to handle this?
    Should I invalidate, and revalidate myself? and if so when should that
    be done?
    All changes to components are executed in the EDT.
    
    regards
    Daniel
- 8
  - Sun Webcast Today & Tomorrow: Replacements for Windows Desktop w.3d Java Features
    Today & tomorrow Sun Webcasts announce new
    ---------------- projects that include
    Java and 3d Java apps in packages designed
    to replace Microsoft packages with packages
    based on Linux and Solaris bundleded with
    Java, Open Office or Star Office, and Mozilla.
    
    | Opening Address & Welcome
    | ------------------------
    | by Sun CEO Scott McNealy
    |
    | Sun's Software Strategy
    | -- Sun EVP Jonathan Schwartz
    |
    | September 16 9:00 a.m. - 11:30 a.m. (PDT)
    |
    | ------------------------------------------
    |
    | Slashing Cost & Complexity from the
    | Desktop to the Data Center
    |
    | -- Sun EVP Mark Tolliver
    |
    | 10:00 - 10:30 a.m. (PDT)
    | LIVE Chat with Sun CEO Scott McNealy
    |
    | September 17 9:00 - 9:45 a.m. (PDT)
    |
    http://www.sun.com/bignews/
    
    3D Desktop Demo ( java.net OpengGL bindings )
    ---------------
    
    SUN DECLARES LINUX DESKTOP READY FOR PRIMETIME
    |
    | Java Technology a Key Feature of Mad Hatter
    |-------------------------------------------
    | Sun's Java technology on the desktop is also
    | being enhanced for Project Mad Hatter providing
    | a native GNOME look and feel for all Java
    | applications.
    |
    | The innovative 3D desktop demo that wowed the crowd
    | during the keynote was built using Java technology
    | on Linux with Java for Open GL bindings which
    | Sun recently open sourced at java.net.
    |
    | Java technology is pervasive on the desktop as it
    | now runs on 550 million personal computers via
    | distribution arrangements with leading PC
    | manufacturers.
    |
    http://www.sun.com/2003-0805/feature/index.html
    
    Java & Java3d is used for Games ...
    
    Java Games
    -------------------------------------------------
    http://javagaming.org/cgi-bin/JGNetForums/YaBB.cgi
    http://www.frontiernet.net/~imaging/games_with_java3d.html
    http://www.frontiernet.net/~imaging/java_games.html
    |
    | Yahoo! Pool is a set of fun and realistic
    | multiplayer online billiard games. The most popular
    | games, 8-ball and 9-ball, allow players to break,
    | choose shots, sink or scratch - just like
    | the real thing.
    |
    | Players of Java technology based Yahoo! Pool games
    | can enter game rooms based on skill level, and
    | join in official Yahoo! Pool league tournaments.
    |
    http://java.com/en/explore/desktop/yahoo_pool.jsp
    
    Human Animation with Java3d with VRML using Sun's Loader
    ---------------------------------------------------------
    http://www.JavaGaming.org/cgi-bin/JGNetForums/YaBB.cgi?board=3D
    http://www.JavaGaming.org/cgi-bin/JGNetForums/YaBB.cgi?board=3D;action=display;num=1060641747
    
    I've been using Linux Red Hat 7.2 and it is
    better and chearper than Windows though it does
    need extra features ... which Sun is now adding.
    
    -- Paul, Java Developer & Web Animator
    --------------------------------------
    Imaging the Imagined: Modeling with Math & a Keyboard
- 9
  - Requesting re-pack'ing of FrameHi all,
    
    I've implemented my own AWT component which determines a "preferred
    size" by itself. This component is added to a Frame, which is at the
    center of a BorderLayout in a Frame which gets pack()ed. The frame is
    also not resizable, because I must ensure this component always acutally
    has its preferred size. This works fine so far.
    
    However, during execution time this preferred size changes; is there a
    *generic* way to propagate this message up to the Frame so it re-pack()s?
    
    I do not want to use a succession of getParent() until I reach the Frame
    and call pack() on it, as this component might be used in a situation
    which does not allow this in the future (maybe an Applet or in an
    resizable/unpacked Frame as part of a more complex layout).
    
    Is there any way to achieve this? I.e., propagate to the Frame/layout
    that the preferred size has changed and this should be considered anew?
    
    Many thanks in advance,
    Daniel
    
    --
    Got two Dear-Daniel-Instant Messages
    by MSN, associate ICQ with stress --
    so please use good, old E-MAIL!
- 10
  - surface plotAll
    
    I want to see if Java can do the surface plot (traditional gird plot, not
    contour or color)
    
    THanks
- 11
  - jpeg has poor quality when written back to diskHi,
    I have written an app using netbeans that loads a jpeg image to a panel.
    I can then do some processing on it. However if I do no
    processing other than loading the file and saving it as a jpeg,
    the file has very bad quality. (compressed further?)
    
    How can I save an image file (jpeg) without losing quality?
- 12
  - Is there any basic base for a community website? (J2ee)Hi
    
    I'm wondering if there is any basic "base" for a community website. With
    things like support for user registration, login, individual homepages,
    photo albums, sending messages, guestbooks, diaries and so on... And
    ofcourse with optimised code (especially the code for the communicating with
    the database).
    I mean, I know these things have been written before, so it feels a bit
    stupid to do it again, like reinventing the wheel.
    What I'm looking for is a basic foundation, written in J2ee (Java/jsp), that
    is easy to use as a base when making a community that should be able to
    handle a large "population" (at least a few thousand simultanous users, and
    holefully ten thousands or even houndred thousands at peak hours, in the
    future).
    
    Any suggestions?
    
    /Jimi
- 13
  - Natural logarithm method not recognisedGood day dear members of the comp.lang.java.programmer newsgroup.
    I've got the following error message while trying to use the "logl()"
    method (natural logarithm function) on my NetBeans IDE
    
    symbol : method logl(double)
    location: class org.me.mylib.fluidmechanics.DarcyLaw
    wfr = 7.08e-3 * ko_dl * depth_dl * (pr_dl - wbp_dl) / (mu_dl *
    bo_dl * ((logl(re_dl/rw_dl) - 0.75)));
    
    1 error
    
    Should I import any special mathematic library from NetBeans?
    
    Many thanks.
    
    Octavio
- 14
  - RFC: Removal of arbortext-catalog and xt-catalogHi,
    
    I would like to request comments if the arbortext-catalog and xt-catalog
    [1] packages can be removed from the archives.
    
    They have no reverse dependencies, do not occur in any build
    dependencies, have only a few users [2], no active upstream and IMO
    libxml-commons-resolver1.1-java offers the same functionality. However,
    the package is not broken.
    
    [1] http://packages.qa.debian.org/a/arbortext-catalog.html
    [2] http://qa.debian.org/popcon.php?package=arbortext-catalog
    
    If nobody objects, I will go for a removal request.
    
    x-post to debian-devel, debian-sgml & debian-java
    
    Regards, Daniel
    
    --
    To UNSUBSCRIBE, email to email***@***.com
    with a subject of "unsubscribe". Trouble? Contact email***@***.com
- 15
  - Graphical Modelling Framework :(Hi,
    
    I would be working on graphical modelling framework(GMF) for my thesis.
    I couldnot find any tutorials on generating editors with Graphical
    Modelling Framework at eclipse.org.
    
    Please post in your suggestions.
    
    Regards,
    Madanagopal.