java-programmer >>but *very* apropos] Future reuse of code

but *very* apropos] Future reuse of code

Index ‹ java-programmer

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- 2
  - lose request focushello
    I have some buttons on my UI and a textfield.
    when the user dont click one of my buttons the focus from the textfiled
    is lost
    how solve this?
    
    in onEvent(Event event)
    {
    if(event.target==button1)
    do something
    else if(event.target==button)
    ..........
    
    like this is going......
    
    what should I add to the method to catch the event(click somewhere in
    UI,but not in my object(buttons......)) properly?
- 3
  - Basic FreeBSD Java/Tomcat questionsHello, all=2E I'm an old hand with Java but relatively inexperienced with=
    
    FreeBSD, and I've never run Java there until the last few days=2E I had a=
    
    few things I was wondering about=2E I can't find these things in the
    archives, and don't know where else to look=2E Some of my questions might=
    
    betray my lack of FreeBSD knowledge =2E=2E=2E
    
    My preferences:
    
    1=2E Avoid customization to the extent possible -- I don't really want to=
    
    spend much energy being an admin -- even if my configuration is not
    optimally flexible, or whatever=2E This means I'd prefer to use packages
    from 5=2E4-RELEASE as opposed to ports, etc=2E
    
    2=2E Not to have to build full JDK (with web start, plugins, etc=2E) --
    building minimal took days as it was=2E
    
    3=2E Simplest system possible, fewest installs possible, ease of
    administration/use=2E
    
    Here's what I've done so far:
    
    1=2E Installed FreeBSD 5=2E4-RELEASE (minimal distribution set only)
    
    2=2E Built jdk-minimal-1=2E4=2E2p7 from source on test machine=2E Seemed=
    to go
    fine=2E Created package using pkg=5Fcreate -b =2E=2E=2E
    
    3=2E Installed jdk-minimal-1=2E4=2E2p7 as package=2E java -version works=
    ; haven't
    tried much else, except =2E=2E=2E
    
    4=2E jakarta-tomcat-5=2E0=2E30 as package WITHOUT its dependencies (i=2Ee=
    =2E,
    pkg=5Fadd -r from my own server, which does not have the fonts stuff on it=
    )=2E=20
    Besides emitting the predicatable complaints about missing dependencies,
    the pkg=5Fadd command emits a warning saying the jdk package is required a=
    nd
    I have jdk-minimal=2E
    
    5=2E Tomcat post-install
    cp conf/server-minimal=2Exml=2Esample to conf/server=2Exml
    cp conf/web=2Exml=2Esample to conf/web=2Exml
    chown www conf/*=2Exml
    /usr/local/etc/rc=2Ed/020* start
    
    What happens:
    
    It works, so far as I can tell=2E This means that I've gone to the home
    page, not tested extensively=2E The 'balancer' webapp doesn't initialize
    correctly (fails with NoClassDefFoundError on
    org=2Eapache=2Ecommons=2Edigester=2EDigester) but I'm not too worried abou=
    t that
    since I don't know exactly what it's for and I haven't read any docs yet=2E=
    
    Questions:
    
    1=2E Why does Tomcat depend on all the font stuff=3F Can I safely run wi=
    thout
    it=3F
    
    2=2E Same question with the jdk vs=2E jdk-minimal issue=2E
    
    3=2E What are the limitations of tomcat50ctl=3F I've seen some messages =
    in
    the archives saying I'll need to change my /usr/local/etc/rc=2Ed script if=
    I
    want to do things like command-line arguments to Tomcat, etc=2E
    
    Comments:
    
    I'm really pleased (as I've worked through these issues) about how smart=20=
    
    the packaging system is (e=2Eg=2E, not deleting files if they've been chan=
    ged)=2E
    Not sure to what extent credit is due FreeBSD developers and to what exten=
    t
    credit is due to people on this list, but take whatever you're entitled to=
    =2E
    :)
    
    Special praise for the jdk14 port -- for such a complex build, I'm shocked=
    
    how well it worked for me, particularly since I know very little about mak=
    e=2E
    
    Cheers,
    
    -- David=2E
    
    --------------------------------------------------------------------
    mail2web - Check your email from the web at
    http://mail2web=2Ecom/ =2E
    
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    email***@***.com mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-java
    To unsubscribe, send any mail to "email***@***.com"
- 3
  - compression API available in Java & C++?Apologies if this is slightly off-topic ...
    
    I'm looking for a compression algorithm that works better than gzip
    for small (12 bytes or so) chunks of data. Ideally there would be a
    free implementation for Java and C++ that we could use for commercial
    purposes.
    
    Specifically, we are streaming data from a C++ server to a Java applet
    and would love to use as little bandwidth as possible.
    
    We're not using any form of compression right now, but the belief is
    that gzip works in blocks, so small chunks of data don't get much
    benefit. (Anyone disagree?)
    
    --
    monique
    
    Ask smart questions, get good answers:
    http://www.catb.org/~esr/faqs/smart-questions.html
- 5
  - Progress bar in JDialogHi all,
    
    I am a new beginner to Java Programming. In my application I am loading
    an xml doc in JFrame, while doc is loading I would like to see a
    progress bar above the J frame.
    
    This is what I did:
    
    I created a modal JDialog with a progress bar, to be able to show the
    dialog above the frame. But if I do that then it freezes the loading of
    the xml doc in my Jframe. In other words, only after I close the
    JDialog I am able to load the document in my JFrame. Hence, the whole
    point of showing a progress bar while loading the document is missed.
    
    How to get over this problem. Can anyone please help.
    
    Any input is greatly appreciated.
    
    Thanks
    Nathan
- 6
  - Problem with table nameHi!
    
    I have a problem to access tables in an Informix Database. Table names
    are something like that :
    informix.pv_tvvte
    
    When I try a "SELECT informix.pv_tvvte.numero_vente FROM
    informix.pv_tvvte WHERE informix.pv_tvvte.numero_vente=#value#", (I use
    ibatis and spring) I get a syntax error exception (SQLException "Bad SQL
    Grammar").
    
    If I replace dot with "_" in the name, I get a "Table Not Found" Exception.
    
    How could I escape the dot in the tables names ?
    
    TIA
    
    Arnaud
- 8
  - java.util.regex - combining paragraphs separated by blank lineI need to write a regular expression to group lines of text separated
    by a blank line.
    
    Ex.
    
    Input:
    line1
    line2
    line3
    
    line 4
    line 5
    
    line 6
    
    I tried turning on the MULTILINE and DOTALL flags and used the
    following pattern:
    (.+?)^$
    
    which is close but prepends a newline to the 2nd and subsequent calls
    to Matcher.find().
    
    The first line of every paragraph is the same, if that helps.
    
    Regex's are cool, but frustrating....
- 8
  - HTML Parser Help PleaseHi
    
    I am using HTMLEditorKit.Parser class to parse a HTML file. However, I have
    found this Swing HTML parser extremely difficult to use.
    
    I am trying to parse a HTML file and extracting specific information from it
    into a table. Consider the snippet of my HTML and the table I like it to
    generate:
    
    HTML source:
    
    <HTML>
    <TITLE></TITLE>
    <BODY>
    <PRE>
    Identifer: ABCDEFG
    </PRE>
    data: 123456
    <PRE>
    </PRE>
    </BODY>
    </HTML>
    
    TABLE:
    
    ABCDEFG 123456
    
    Here is the code I have so far:
    
    import javax.swing.text.*;
    import javax.swing.text.html.*;
    import java.io.*;
    
    public class HTMLParser extends HTMLEditorKit
    {
    public HTMLEditorKit.Parser getParser()
    {
    return super.getParser();
    }
    
    public static void main (String[] args)
    {
    try
    {
    Reader r = new FileReader("html_file.html");
    HTMLEditor.Parser parse = new HTMLParser.getParser()
    HTMLEditorKit.ParserCallback cb =
    {
    public void handleStartTag(HTML.Tag t, MutableAttributeSet
    a, int a)
    {
    if (t==HTML.Tag.PRE)
    {
    //print whats between the pre tag
    }
    }
    public void handleText(char[] data, int pos)
    {
    //print whats between the pre tags
    }
    };
    
    parse.parse(r, cb, true);
    }
    catch (IOException e)
    {
    System.out.println(e);
    }
    }
    }
    
    I would appreciate it very much if someone could solve this problem for me.
    I tried the sun tutortial, but the examples aren't that clear enough for me.
    
    Thanks
    
    ZOCOR
    
    ---
    Outgoing mail is certified Virus Free.
    Checked by AVG anti-virus system (http://www.grisoft.com).
    Version: 6.0.760 / Virus Database: 509 - Release Date: 10/09/2004
- 9
  - I miss my preprocessor!There's one thing I really used the C/C++ preprocessor for, and that is
    compile-time control of debugging statements.
    
    in it's simplest form:
    ----------------------------------------------
    // comment out this line to disable debugs
    #define DEBUG 1
    
    #ifdef DEBUG
    # define dbg(msg) printf(msg)
    #else
    # define dbg(msg)
    #endif
    
    void main(int argc, char argv[][])
    {
    dbg("Some sorta message\n");
    }
    ----------------------------------------------
    
    This system had evolved to a very powerful mechanism for
    enabling/disabling/removing debug statements from my code. The beauty of it
    is that debugging code can be removed
    entirely from released code, without removing from the source. (I like
    leaving it in the source because it provides a sort of ancillary
    documentation). The only shortcoming was the lack of variable macro
    parameters in C/C++.
    
    The nearest I could come up with in java is:
    ----------------------------------------------
    class xxx
    {
    private static final boolean DEBUG=true; // set to false to turn
    off debugging
    void dbg(String msg)
    {
    if (DEBUG) // this gets optimized out
    System.out.print(msg);
    }
    
    public static void main( String[] args )
    {
    if (DEBUG) dbg("Some sorta message\n");
    }
    } // xxx
    ----------------------------------------------
    While this does seem to work, it relies on the compiler to implicitly
    optimize the code out. Not that I don't trust the compiler, but how can I
    prove it?
    From an aesthetic point of view, the "if (DEBUG)" part seems to clutter up
    the source.
    And it leaves a stub for dbg() in the code.
    
    My point is, what options are available to reproduce the desired mechanism?
    (Don't give me anything from java 1.5/5.0; I can't use it till it is
    officially released, and the major ide manufactures endorse it).
    
    regards,
    Dar7yl (the 7 is silent)
- 9
  - The solutions are very OS specific.Hi Mark Thornton,
    
    You wrote,
    " The rough equivalent to an HDC is
    a java.awt.Graphics object,
    extended ( since Java 1.2 ) to java.awt.Graphics2D.
    These are used for drawing to screens, printers
    or into a BufferedImage. "
    
    That's quit impressive,
    But my bank simulation currently requires Excel,
    which precludes Linux.
    
    Also, if I ever moved my simulations to Direct Draw 7,
    or even Direct 3D 9 ( instead of the GDI )
    once again I'd be forced to use C++,
    as DD7's interaction with MS windows is very tricky
    and very OS specific.
    
    For example,
    Windows' taskbar hoards it's mouse messages.
    The taskbar also turns on the system cursor,
    which blocks VRAM-to-VRAM blts.
    The solutions are very OS specific.
    
    Would the bankers pay for that ? I doubt it.
- 11
  - queue management with "application failure management"hi,
    
    I am looking for something which looks like the message queue of the IPC
    systemV with java.
    
    my requirements are:
    
    -management of a queue. one application adds data in this queue and
    another gets data from this queue.
    
    -simple : no server like JMS. (btw if you know some JMS implementation
    without a server it could be what I want). could be in a file.
    
    -no data lost if one application crashes. ie if the application which
    gets data from the queue crashes, the other can continue to add data to
    this queue and the processing will continue without losing data once the
    crashed application is restarted.
    
    do somebody know some libs which implements this?
    
    thanks.
- 11
  - java.net SocketPermissionHi,
    
    I am getting the SocketPermission deny error when I trying to run my
    applet on the net. When I was running stand along, embed in the frame,
    on my local PC, it was no problem. Help!!!
    
    eric
- 11
  - Watch NFL Games OnlineWatch NFL Games Online!
    For every one who wants to watch the games online because they dont live in the teams town or are at work i found a site that has basically every game covered. Its perfect if you have afford a monthly $70 direct tv nfl access subscription. they got a bunch of channels
    The sites http://nflonline.wizhoo.com
- 13
  - Eclipse : JCE problemHi,
    
    I have this exception when I launched an application from Eclipse 2.1.
    
    java.security.NoSuchProviderException: JCE cannot authenticate the provider
    SunJCE java.lang.NullPointerException
    at javax.crypto.SunJCE_b.a(DashoA6275)
    at javax.crypto.SunJCE_b.a(DashoA6275)
    at javax.crypto.SecretKeyFactory.getInstance(DashoA6275)
    at
    cms.security.SecurityConfiguration.getSecretKeyFactory(SecurityConfiguration
    .java:196)
    at
    cms.kms.PBEKeyHandlingService.loadValuesFromSecurityConfig(PBEKeyHandlingSer
    vice.java:276)
    at
    cms.kms.PBEKeyHandlingService.<init>(PBEKeyHandlingService.java:114)
    at cms.backend.JCECryptoService.<init>(JCECryptoService.java:129)
    at services.CryptoService.<init>(CryptoService.java:68)
    ...
    
    I'm using JDK ver. 1.4.0. I'm have replaced local_policy.jar and
    US_export_policy.jar with an unlimited strength version.
    
    However, this exeception is NOT thrown when I launched the same application from
    command line. It only happen when I executed it inside Eclipse environment.
    Any advice?
    
    TQ
    
    /lim/
- 14
  - to whom it may concern
    "pcbutts1" <email***@***.com> wrote in message
    news:4e23e9d12ed44ede9a25a80dde27d810@erollscom...
    >
    > You don't, by any chance, have a tape recorder?
    >
    
    No. But I do own a shovel. I also own several high powered rifles and I'm
    very proficient in using them. Capisce?
- 14
  - recognizing java processesHow would you recognize a java process (as java process) in runtime
    from outside the JVM? (win32)
    
    is there a nicer way than monitorizing DLL loads in order to detect
    the jvm.dll/javai.dll load?

Author

Message

Peter E.C. Dashwood

Posted: 2003-8-7 14:55:00

Top

java-programmer, but *very* apropos] Future reuse of code LOL!

I enjoyed reading that...

I think "Nihil Software" was a bit of a giveaway... Maybe some of my posts
in the 90s inspired the author <G>.

I hasten to add that this is NOT what we were intending to do with Dulcinea.

Natural language interfaces are not SO hard to write (I wrote one for MS-DOS
that allowed people who didn't like the command line to communicate in
English.) It was distributed by a computer vendor in North Sydney as an
incentive to buy machines from him. He paid me $10 for every machine he sold
with it on...(It was called "IGOR" - Interactive Guide to On-line Running
<G>.) I did it because someone said it couldn't be done, and wasn't really
interested in it as a money maker.

He sold several hundred machines with it on, before Windows 3.1 came out and
blew it all away.... I received mail from people up to 2 years afterwards
saying how much they liked it. (If they asked IGOR about his life he would
give them my e-mail address, as well as an amusing tale of how he escaped
from Frankenstein's lab <G>)

The concept engine would have used a similar Natural Language simulation for
interaction with the User, but it would have no UNDERSTANDING of what the
language meant (apart from keywords which it would act upon).

Nowadays of course, there are some very good Natural Language interfaces and
they are quantum leaps beyond IGOR.

Don't let the fact that a magazine caught you with a hoax, persuade you that
such software will never be developed.

Thanks for posting it, John.

Pete.

"jce" <email***@***.com> wrote in message
news:XOkYa.17847$email***@***.com...
> Here is a classic gotcha from Software Development magazine that I
consider
> appropriate enough to consider sharing.. you are fortunate enough to have
a
> disclaimer on the online version...those of us who read this back then
(and
> are gullible) actually believed it for a moment :-)
>
> http://www.sdmagazine.com/documents/s=819/sdm0204f/
>
> You may have to register but you can make up a name...you could sign up
for
> the free magazine (maybe not in nz) but it's a pretty interesting magazine
> that doesn't take long to flip through.
>
> Here's the intro:
> Once every decade or so, a technology comes along that changes the
software
> landscape, becoming an indispensable part of the developer's life.
Although
> just about every new software concept touts itself as something that will
> "change the way we work," only a handful truly possess such far-reaching
> consequences. One key advance in our field was object-oriented
programming.
> Another is the increasing level of abstraction in the tools that
developers
> use. What shape might the next advance take?
>
> The R&D folks at Nihil Software believe they have the answer. Their
> innovation is called Natural Language Design (NLD), an approach that
enables
> rapid construction of complex software systems using natural (spoken or
> written) language to specify the program. Using this approach, and the
> accompanying tools that Nihil has provided as reference implementations,
you
> can verbally describe the system you want to build and literally see it
> constructed as you speak. That's right, you heard me, no programming.
> Skeptical? Read on.
>
> John (jce)
>
> "Peter E.C. Dashwood" <email***@***.com> wrote in message
> news:email***@***.com...
> > TOP Post only.
> >
> > Dennis,
> >
> > I have believed for some years now that the lack of ARTIFICIAL
> intelligence
> > to generate systems can be compensated for (until it actually arrives
> around
> > 2020...<G>) by putting a Human (or Humans) in the loop.
> >
> > This was revealed to me in a blinding flash of insight (kind of like
Saul
> > on the road to Damascus <G>) when I was trying some new approaches to
> > Project Management and instigated some RAD type workshops. The keys are
> > INTERACTION and ITERATION. Do something, look at it, discuss it,
evaluate
> > it, change it, look at it again and repeat this process for a finite
> period
> > of time or until the desired goal is attained.
>
>

Index ‹ java-programmer

Next
- 1
  - Focus problem on JListHello,
    
    I made a JDialog with two JButton and one JList. I'd like to get the focus
    on my Jlist, but it's always the first button (in declaration order) which
    has the focus. An actionListener is added to the JButton and I put the focus
    on the Jlist by "JList.requestFocus()".
    
    Any idea ?
- 2
  - Univernsal IDIt seems to me any sort of ID that can be forged for under $500 is
    worse than useless. Any serious bad guy can easily afford fake id.
    For everyone else it is just a hassle if they forget their id.
    
    In our past anonymity was not a right. Everyone knew everyone in the
    village/tribe. You could not easily do wrong without others knowing
    it was you.
    
    If we got serious about a Universal ID, what are its characteristics?
    
    1. costs over $1,000,000 to forge.
    
    2. not useful to anyone other than the true owner.
    
    3. can be scanned in under a second.
    
    4. cannot be scanned without permission from the owner.
    
    5. Should not need to be replaced unless lost. Additional photos
    could be digitally added as you age.
    
    6. it should be useful as a credit/debit card, id card, door key,
    proof of age, link to medical records. It might even capture most of
    the information needed to compute your taxes in a way that the
    government has to believe you.
    
    7. It would have to be based on encryption technology and digitally
    signing information such as DNA, retinal patterns, fingerprints,
    photo.
    
    It might be reasonable to design such a card presuming the card will
    have the CPU and memory of a laptop running Java.
    --
    Roedy Green Canadian Mind Products
    The Java Glossary
    http://mindprod.com
- 3
  - My app runs too slow (lots of code follows)Let me start out by saying that I'm admittedly not a great programmer.
    I'm sure that my problems are my own fault and not really Java's. I
    have a program that I had originally written in Perl. For various
    reasons I decided to rewrite it in Java, but now that I'm nearly done,
    I'm not sure if I want to use it because it's very slow and resource
    intensive compared to my Perl version.
    
    Quick summary of what the program does: it performs MD5 sums on a
    number of files, stores the sums and compares against them on future
    runs -- sort of a cheesy tripwire, checks that some processes are
    running, checks the contents of a few small files like /etc/passwd,
    /etc/shadow, etc. It's strictly a Unix program for me.
    
    My old perl version generally runs the comparisons, checks file
    permissions, reads a couple of files, along with reading the last few
    minutes of a few logfiles (something I have yet to really implement in
    my new Java version, which will make it run even longer, of course) in
    less than a second. My java version does it (minus the logfile
    reading) in anywhere between 10 and 15 seconds.
    
    Here's my -Xprof output:
    
    Flat profile of 0.74 secs (37 total ticks): process reaper
    
    Thread-local ticks:
    100.0% 37 Unknown: no last frame
    
    Flat profile of 0.69 secs (36 total ticks): process reaper
    
    Thread-local ticks:
    100.0% 36 Unknown: no last frame
    
    Flat profile of 0.47 secs (24 total ticks): process reaper
    
    Thread-local ticks:
    100.0% 24 Unknown: no last frame
    
    Flat profile of 0.79 secs (41 total ticks): process reaper
    
    Thread-local ticks:
    100.0% 41 Unknown: no last frame
    
    Flat profile of 10.98 secs (324 total ticks): main
    
    Interpreted + native Method
    1.2% 0 + 2 java.io.UnixFileSystem.getBooleanAttributes0
    1.2% 0 + 2 java.lang.System.arraycopy
    0.6% 1 + 0 java.io.File.getName
    0.6% 0 + 1 ssm.FileStat.getOwner
    0.6% 0 + 1 java.util.ResourceBundle.<clinit>
    0.6% 1 + 0 java.io.BufferedInputStream.fill
    0.6% 1 + 0 sun.nio.cs.US_ASCII$Decoder.decodeArrayLoop
    0.6% 0 + 1 java.io.FileInputStream.open
    5.8% 3 + 7 Total interpreted
    
    Compiled + native Method
    34.7% 59 + 1 java.io.ByteArrayOutputStream.write
    27.2% 47 + 0 java.io.BufferedInputStream.read
    18.5% 32 + 0 sun.security.provider.MD5.transform
    1.2% 2 + 0 java.util.Arrays.mergeSort
    1.2% 2 + 0 ssm.MD5Sum.loadByteData
    0.6% 1 + 0 java.lang.StringBuffer.length
    0.6% 1 + 0 ssm.UnixCrypt.D_ENCRYPT
    0.6% 1 + 0 java.lang.String.toString
    84.4% 145 + 1 Total compiled
    
    Stub + native Method
    0.6% 0 + 1 java.lang.System.arraycopy
    0.6% 0 + 1 java.io.FileInputStream.readBytes
    1.2% 0 + 2 Total stub
    
    Thread-local ticks:
    46.6% 151 Blocked (of total)
    0.6% 1 Class loader
    7.5% 13 Unknown: no last frame
    0.6% 1 Unknown: thread_state
    
    Flat profile of 0.00 secs (1 total ticks): Thread-1
    
    Interpreted + native Method
    100.0% 1 + 0
    java.security.AccessController.getStackAccessControlContext
    100.0% 1 + 0 Total interpreted
    
    Global summary of 11.01 seconds:
    100.0% 327 Received ticks
    0.3% 1 Received GC ticks
    0.6% 2 Compilation
    0.3% 1 Class loader
    46.5% 152 Unknown code
    
    And, because I'm not really sure what to point anyone at, I'll just
    attach
    the bulk of my code, sorry...
    
    main:=========================================================
    import ssm.*;
    import java.io.*;
    import java.util.*;
    import java.net.InetAddress;
    import java.text.SimpleDateFormat;
    
    class SystemsSecurityMonitor {
- 4
  - references and a binary treeHello,
    
    I am new to Java. I am filling a binary tree with values using a loop,
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    //...
    while(1) {
    node=new Node(new Leaf(),null);
    node=node.right;
    }
    
    I thought that the node variable will contain reference after this
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    So my question is, what actually happens in the node=node.right , I
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    I coded the same in c++ and instead of references I used the pointers
    and it worked right as I expected.
- 5
  - Can I create a Thread directlyHI,
    
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    Thread tt = new Thread(); (or Thread tt = new Thread("thread");)
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    If this is not possible, what is the use of these two methods?
- 6
  - JScrollPaneI have a file displayed in a JTextArea which is in a JScrollPane. When the
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    _______
    Nechama Shuchatowitz
    email***@***.com
- 7
  - Tomcat and Connection HandlingHi,
    
    I have noticed that when you do not return from the doGet() or doPost()
    method, for example, by inserting a infinite while loop like this:
    
    public void doGet(HttpServletRequest request, HttpServletResponse
    response) throws ServletException
    {
    while(true);
    }
    
    that tomcat will run out of connections after a few requests. So it
    seems to me, that tomcat is only using a few threads to serve many many
    http requests.
    
    Is there any way that I can make sure, that each doGet() and doPost()
    will be handle by a dedicated thread?
    
    The problem I'm trying to solve is to keep up to 1000 http connections
    alive over a long period of time and to sent information to the clients
    once in a while.
    
    I have solved this with basic thread blocking and waiting on objects,
    but the problem is that tomcat runs out of threads, because there seems
    to be a limited amount of threads, which tomcat uses to serve its http
    requests.
    
    any advice is appreciated!
    fritz
- 8
  - Trouble with KeyListeners in 1.4.2I'm having trouble using KeyListeners in 1.4.2. I'm writing a graphics
    application, and I'd like to change the behavior of some of the tools when
    modifier keys are held down. The problem is that I use a JToolBar, which
    seems to have grabbed hold of the focus and won't let go. The KeyListener
    I've registered with the main JFrame doesn't pick up any events (unless I
    comment out the JToolBar).
    
    I found a fix on the boards at java.sun.com which involves registering a
    KeyEventDispatcher with the current KeyboardFocusManager, and that does
    allow my KeyListener to work, but any *other* KeyEvents fail to propagate
    further--i.e., alt-F4 no longer quits the app, the alt-keys for my menu
    mnemonics stop working, etc.
    
    What do I have to do to get both shift-key detection and other key commands
    working at the same time? I understand there were some changes to the focus
    system in 1.4.x that cause these problems, but there doesn't seem to be any
    documentation on how to work around them.
    
    Any help is much appreciated.
    
    BTW, here's the code for the KeyEventDispatcher, in case it helps:
    
    DefaultKeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventDisp
    atcher(
    
    new KeyEventDispatcher() {
    
    public boolean dispatchKeyEvent(final KeyEvent e) {
    
    processKeyEvent(e);
    
    return true;
    
    } // dispatchKeyEvent
    
    } // KeyEventDispatcher constructor
    
    );
    
    --
    Aaron Davies
    email***@***.com
- 9
  - Reverse order using Struts iterate tag"Bob" <email***@***.com> wrote
    > I am fairly new to struts. Is it possible to iterate backward through
    > a collection when using the struts iterate tag? We would like to list
    > the values in reverse order on the page.
    
    Yes, I've got things listing in reverse date order in my own Struts webapp.
    However, I don't think this has anything to do with Struts. <logic:iterate>
    and <c:forEach> are going to return the items in whatever order they come
    out of the Iterator returned by the Collection's iterator() method.
    
    To make things sort "backwards", you can override the 'compareTo' method
    (and probably equals and hashCode, to be completely correct) on the class of
    the objects in your collection. Then call Collections.sort with your
    Collection. (I think you can also use a Comparator instead of overriding
    compareTo, but that's not how I did it. Actually, looking through my code I
    think I may have sorted these on the database side before returning the data
    to the DAO! But it's still possible.)
    
    Then when you get to the JSP the logic:iterate tag should display things in
    reverse order.
    
    Can you post the JSP and let us know what type of objects you have in your
    Collection?
    
    --
    Wendy in Chandler, AZ
- 10
  - ant inherifRefs & echo for variablesHi! I'd like to see what ant thinks a variable value is.
    <echo>${varname}</echo> just shows me the literal '${varame}'. I was
    hoping there was some way to resolve it.
    The reason I want to do this is that delegate build.xml's don't seem to
    be inheriting refs
    <ant dir="subfolder" inheritAll="false" inheritRefs="true"/> doesn't
    seem to be working for me. I'm trying to pass a class path down to the
    build file that actually compiles. Is this possible? Is there a common
    pitfall I'm probably falling into?
- 11
  - not getting an error but this code is not working properly.this code is to delete a record from an access database.there is no
    error but the record is not getting deleted from database.
    please help me in this regard.
    thanks in advance.
    code:
    if(JTCurrentJobTable.getValueAtJTCurrentJobTable.getSelectedRow),JTCurrentJobTable.getSelectedColumn())
    != null){String ObjButtons[] = {"Yes","No"};
    int PromptResult = JOptionPane.showOptionDialog(null,"Are you sure you
    want to delete the selected record?","Delete
    Record",JOptionPane.DEFAULT_OPTION,JOptionPane.ERROR_MESSAGE,null,ObjButtons,ObjButtons[1]);
    if(PromptResult==0){stCurrentJob.execute("DELETE * FROM
    tblCurrentJob WHERE CurrentJobIndex= " +
    JTCurrentJobTable.getValueAt(JTCurrentJobTable.getSelectedRow(),0));
    reloadRecord();
    JOptionPane.showMessageDialog(null,"Record has been successfully
    deleted.","Comfirm Delete",JOptionPane.INFORMATION_MESSAGE);
    }
- 12
  - SCSI, tape, and scanner I/O?Are there any commonly used I/O classes for tape drive, scanner, or general
    SCSI operations?
    
    Charles P. Lamb
- 13
  - JMF Manager.createDataSource() and Resource URLsCurrently I am getting a URL from Class.getResource() for a wav file in
    the same directory.
    
    So here is what happens:
    
    If I feed Manager.createDataSource from JMF the Resource URL it fails
    and says unable to locate Data Source
    
    If I feed Manager.createDataSource a url to a webserver with the same
    file it works fine.
    
    How can I work around this?
    
    Dan
- 14
  - JTable select problemHello,
    
    I have a great problem with my JTable. I have a JTable with few lines
    and two columns. The user can select one line and with the following
    statements
    
    int column = tblSearchResults.getSelectedColumn();
    int row = tblSearchResults.getSelectedRow();
    Object value = tblSearchResults.getValueAt(row,column);
    
    I retrieve the value with which I display details of a second line in a
    new window (when the user presses a certain button). The problem is
    when I close this new window and want to select a new line the
    getSelectedColumn and the getSelectedRow returns always -1 which
    says that no line is marked although I have marked a line.
    
    Does anybody know what the problem can be? - it must concern the open
    and close of the detail window, because when I omit the code line which
    opens the detail window and only make System.out.println's with the
    getSelectedColumn and getSelectedRow it will always output the right
    line...
    
    thx
    
    pat
- 15
  - relative paths for properties files in a web appI want to plug an API in to a web app. The API has a properties file
    that has properties defining the relative location of particular
    files. The questions I have are
    
    1. where should I store such 'particular files', indeed including the
    properties file itself - should I manually load them in to the WEB-INF
    directory?
    
    and
    
    2. how do I relatively relate to the path of the files located inside
    the web app (for example in the WEB-INF) inside the properties file.
    
    I hope that makese sense.
    
    Thanks