java-programmer >>Using Java CORBA under OS2

Using Java CORBA under OS2

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- 1
  - Swing textboxes can't get focus after JFileChooserHi Java guru's,
    
    I have a swing form that has a text field where a directory name can
    be entered. Just to its right I have a button that will open the
    JFileChooser dialog to allow selection of the directory name from a
    dialog.
    I can go in and type the directory name into the textbox by hand. So
    far, so good.
    
    I can go in and press the button, have the dialog appear, choose a
    directory, and have the textbox programatically updated. Again, this
    works.
    
    But, if I press the button and choose a directory, I then lose the
    ability to use my mouse to access any textboxes on my form. I am able
    to use the tab button to move to, and update the textboxes.
    
    I can't then click my mouse on a textbox and be able to enter in data.
    Instead, I have to tab to it. The mouse also cannot be used to select
    data within a textbox by double clicking or highlighting it. I CAN
    hold down the mouse button and scroll right or left and have the
    textbox's data shift if the text exceeds the width of the textbox.
    But, the textbox appears to be disabled.
    
    Interestingly enough, I AM able to use my mouse to click other BUTTONs
    on the page.
    
    So, its just the textboxes that seem affected.
    
    Anyone have a solution or hints?
    
    (btw, I'm using Java 1.4.2.x)
    
    TIA
    
    Here is my button listener:
    
    public void actionPerformed(ActionEvent event)
    {
    if (event.getSource() == btnRun)
    if (areAllFieldsPopulated())
    {
    lblStatus.setText("Processing");
    ExportFunctionalAreas exportFunctionalAreas = new
    ExportFunctionalAreas();
    exportFunctionalAreas.ExportXml(txtInputFileName.getText(),
    txtOutputFileName.getText(), txtElementName.getText());
    lblStatus.setText("Finished");
    }
    else
    {
    }
    else if (event.getSource() == btnSelectFile)
    txtInputFileName.setText(FileHandler.OpenFileDialog(txtInputFileName,"Open
    Input File","xml","XML files (*.xml)"));
    else if (event.getSource() == btnOutputDirectory)
    txtOutputFileName.setText(FileHandler.OpenDirectoryDialog(txtOutputFileName));
    }
    
    and here is the open directory dialog code:
    
    public static String OpenDirectoryDialog(Component Owner)
    {
    JFileChooser chooser = new JFileChooser();
    chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
    if (JFileChooser.APPROVE_OPTION == chooser.showOpenDialog(Owner))
    return chooser.getSelectedFile().getPath();
    else
    return null;
    }
- 4
  - Directory Aliases in ResinI recently had a project dropped into my lap that is written in JSP
    running on Apache/Resin. A previous version of the application is
    already running and configured on the production server, but new
    functionality forces us to reconfigure some portions of both Apache
    and Resin. There are basically two versions of the app that live in
    separate directories, one that is served when someone goes to
    www.domain.com, the second when someone goes to www.domain.com/subdir.
    The main issue here is that there will be more than one "subdir", all
    of which need to point to the same directory on the server, rather
    than duplicating all the code for each new "subdir" that gets added.
    Setting up aliases in Apache isn't a big deal, those are done. What
    I'd really like to know is if it is even possible to set up aliases in
    Resin similar to how they are done in Apache. I did some digging
    through documentation, but was unable to find something. If anyone
    can point me in the right direction, I'd appreciate it.
- 4
  - programi would to get the solution for the following program.
    
    Write a complete Java program that does the following:
    Prompt the user to type in the hour and minute departure time for an
    airline flight.
    Prompt the user to type in the hour and minute arrival time for that
    flight. (Note: assume that the flight occurs in just one afternoon, leaving
    at or after 1:00 and arriving at or before 12:59. Assume also that the user
    provides valid input values!)
    Calculate the total number of minutes the flight will be in the air.
    Display the departure time, the arrival time, and the flight time (in
    minutes) of the flight.
    
    --
    Message posted via http://www.javakb.com
- 7
  - Unreferenced enclosing class instance ?Hi,
    
    I have below question about below enclosing class instance:
    
    For below class
    
    class MyOuter {
    //.. say, some variables and methods defined here
    class MyInner {
    //.. say, some variables & methods defined here
    }
    }
    
    pulic class TestNested {
    public static void main(String[] args) {
    MyOuter.MyInner inner = new MyOuter().new MyInner();
    //.. suppose some time & memory consuming code executed afterwards
    but inner not assigned 'null'
    }
    }
    
    If compiled class TestNested ran & garbage collector did run at some
    time before program terminated, will the MyOuter instance created in
    first line of main be garbage collected ? Is there any method to
    re-bind that created MyOuter instance with a reference variable after
    the line "MyOuter.MyInner inner = new MyOuter().new MyInner();"
    executed (besides split the statement into two like
    
    MyOuter outer = new MyOuter();
    MyOuter.MyInner inner = outer.new MyInner() ? :)
- 9
  - Netbeans V5......Tomcat just won't start.. Why??My appologies if this is not the correct forum but I am desperate.
    
    I have downloaded Netbeans V5.0 with JDK 1.5.0_05. Tomcat will not start.
    It just seems to hang until it times out. If anyone else has had this
    problem OR can direct me to a possible solution I would be deeply grateful.
    
    PS Netbeans refuse to answer my emails!!
- 13
  - M-I'5.P ersecution - Capital Radi o - Chris T arrant-=-=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=
    -= Capital Radio -. Chris Tarrant -=
    -=-=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=
    
    Capital Radio DJs have been "in on it" from the start.. One of the first
    things. I heard in the summer of 1990 was from a Capital DJ who said, "If
    he listens to Capital then he can't be all bad". (supportive, you see. We're
    not bastards). Much. of what came over the radio in 1990 is now so far away
    the precise details. have been obliterated by time. No diary was kept of the
    details, and although archives if they. exist may give pointers, the
    ambiguity of what broadcasters said would leave that open. to
    re-interpretation.
    
    In spring 1994, Chris Tarrant on his Capital morning show made an aside. to
    someone else in the studio, about a person he didn't identify.. He said,
    "You know this bloke? He says we're trying to kill him. We. should be done
    for. attempted manslaughter".
    
    That mirrored something I had said a day or. two before. What Tarrant said
    was understood by the staff member in. the studio he was saying it to; they
    said, "Oh no, don't say. that" to Tarrant. If any archives exist of the
    morning show (probably unlikely) then. it could be found there; what he said
    was so out of. context that he would be very hard put to find an explanation.
    A couple of days later, someone at the site where I. was working repeated the
    remark although. in a different way; they said there had been people in a
    computer room when automatic fire. extinguishers went off and those people
    were "thinking of suing. for attempted manslaughter".
    
    Finally, this isn't confined to. the established radio stations. In 1990
    after I had listened to. a pirate radio station in South London for about
    half an hour, there was. an audible phone call in the background, followed
    by total silence for a. few moments, then shrieks of laughter. "So what are
    we supposed to say now?. Deadly torture? He's going to talk to us now, isn't
    he?", which meant that they could. hear what I would say in my room.
    
    5716
- 13
  - Math.pow(a,b) Bug
    --=-bch+Wpkq/6UBCHGw87bz
    Content-Type: text/plain
    Content-Transfer-Encoding: 7bit
    
    java.lang.Math.pow(a,b) incorrectly returns a positive value when a
    negative value is raise to an odd integer. This occurs with the
    jdk-1.4.2p6_4, which applies patchset 6. The attached file will
    demonstrate the error.
    
    The problem appears to be corrected by rebuilding the JVM with the
    following correction:
    
    --- e_pow.c.orig Mon Aug 30 21:01:45 2004
    +++ e_pow.c Mon Aug 30 21:01:01 2004
    @@ -173,7 +173,7 @@
    }
    
    /* (x<0)**(non-int) is NaN */
    - if(((((u_int32_t)hx>>31)+1)|yisint)==0) return (x-x)/(x-x);
    + if(((((int32_t)hx>>31)+1)|yisint)==0) return (x-x)/(x-x);
    
    /* |y| is huge */
    if(iy>0x41e00000) { /* if |y| > 2**31 */
    
    Furthermore, examining the experimental patchset, it appears that the
    following patch also corrects the error:
    
    2004-07-08 Thursday 20:09 glewis
    
    * j2se/src/share/native/java/lang/fdlibm/src/e_pow.c:
    
    . Merge in a fix recently added to FreeBSD's math library (taken
    from
    fdlibm-5.3):
    
    "Fixed the sign of the result in some overflow and underflow cases
    (ones
    where the exponent is an odd integer and the base is negative)."
    
    I've not yet run this through the compatibility test suite, so
    this
    change may be backed out if the suite relies on the broken
    behaviour.
    
    If I had the compatibility test suite, I would be willing to apply the
    experimental patchset and perform the test. At the moment, I am not
    willing to apply the patchset without being able to test the results.
    
    Please email me with any questions or suggestions.
    
    Best regards,
    
    Tom H.
    
    --
    ---------------------------------
    -- Thomas M. Hermann
    -- Thomas.Hermann AT cox DOT net
    ---------------------------------
    
    --=-bch+Wpkq/6UBCHGw87bz
    Content-Type: text/plain; charset="us-ascii"
    MIME-Version: 1.0
    Content-Transfer-Encoding: 7bit
    Content-Disposition: inline
    
    _______________________________________________
    email***@***.com mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-java
    To unsubscribe, send any mail to "email***@***.com"
    
    --=-bch+Wpkq/6UBCHGw87bz--
- 13
  - Applet downloading from netI have a beginner's question.
    
    If I go to internet, a web page containing a java applet. The applet
    class
    should be downloaded to my hardware.
    
    Does anybody can tell me where I can find the downloaded applet class
    file
    and image file related to the applet class?
    
    Thanks in advance,
    
    P.Kaviarasu
    email***@***.com
- 13
  - Java Newbie questionHi all, I'm learning Java 2 by myself and find question for help.
    
    I'm testing the System.in.read() method and tried the following program:
    
    import java.io.*;
    
    class ReadBytes {
    public static void main(String args[])
    throws IOException {
    byte data[] = new byte[10];
    
    System.out.println("Enter some characters.");
    System.in.read(data);
    System.out.print("You entered: ");
    for (int i=0; i<data.length; i++) {
    System.out.print((char)data[i]);
    }
    }
    }
    
    My question are:
    (1) if I just comment out the "throws IOException" in the main, I
    just got compilation error! Is the any condition I can tell whether
    I have to throw something or not? I remembered in the HelloWOrld
    app, I don't have to throw anything.
    (2) If I entered more than 10 characters in the above test, I didn't
    get overflow error. Why? Actually I'm expected an exception to
    be caught.
    
    Thanks in advance.
- 13
  - A Beginner:Why is my program always returning true?Hi I'm learning Java and there seems to be something wrong with my
    program. It's supposed to identify if the substring is in the main
    string. My program always returns true and I'm a bit confused.
    
    BTW, this is based from the tutorial from sun. I've read the whole
    fundamentals section and try to re-write the examples there after a
    while.
    
    Anyway here's the code:
    
    class findInString {
    public static void main(String[] args){
    String mainString = "The quick brown fox jumped over the lazy dog.";
    String subString = "hey";
    boolean isItThere = false;
    
    int max = mainString.length();
    Test:
    for (int letter = 0; letter < max; letter++){
    int subStringSize = subString.length();
    int subStringCounter = 0;
    int mainStringCounter = letter;
    
    while (subStringSize-- > 0){
    if (mainString.charAt(mainStringCounter) !=
    subString.charAt(subStringCounter)){
    continue Test;
    }
    }
    
    isItThere = true;
    break Test;
    }
    
    System.out.println(isItThere ? "Word found" : "Not found.");
    }
    }
    
    If you guys see anything that I should improve on (my programming)
    please feel free to comment. I'd appreciate them. Thanks!
- 14
  - Jars and getResource()Hi there,
    
    I've been trying to find a solution to this with no luck so far.
    
    Consider a project with the following dir structure
    
    /bin
    /resources
    /resources/velocity
    .
    .
    etc.
    
    In /resources/velocity there is a file "velocity.properties"
    
    with /resources/velocity in the classpath I can simply say from within a
    class
    
    Class.class.getResourceAsStream(/velocity.properties);
    
    and get an InputStream to that file.
    
    However, when packaging it in a jar file, the above statement stops
    working even if in the Manifest I specify in the header:
    
    Class-Path: resources/velocity/
    
    Any ideas? :(
    TIA
- 15
  - XML Validation From Flat File?Hi All,
    
    I am trying to convert some Flat Files (Fixed-Width and CSV) to XML
    files (Using Java) and I was wondering what is the best way to validate
    the data in conversion time (in term and data type, size, missing
    fields, etc.)? I know javax.xml.validation helps but is this the
    easiest way? Is there any UI tool to help generating these Schema
    files?
    
    Thanks in Advance,
    
    Homer
- 15
  - Telepathic exercisesI love me.
    I am loved.
    I love dolphin.
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  - Eclipse text Drag n dropHello. Are any plugin that allow to drag n drop highlited text?
    
    thnx
- 16
  - When will reset and validate methods call in struts action formsHi all,
    when will the reset and validate methods call in struts action form?

Author

Message

jeff

Posted: 2004-5-1 2:21:00

Top

java-programmer, Using Java CORBA under OS2 Hi,

OS/2 (y'all remember that, right? It's now out in a spiffy new independent
version http://www.ecomstation.com) uses DSOM, which is a relative of CORBA
to define objects at the OS-level. I am wondering if there are any tools to
take classes defined in CORBA then implemented in Java and use them under
OS/2. It could work really nicely. I found an old SOM to Java compiler from
IBM, but that seems to be unsupported now.

Just wondering if anyone has experience with this.

-- jjg
There are no z's in my address.

Index ‹ java-programmer

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