java-programmer >>Eclipse : JCE problem

Eclipse : JCE problem

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- 1
  - 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?
- 2
  - JBoss 3.2.2 security
    Hello,
    
    I'm developing EJB based system on JBoss. The system consists of
    two parts: the set of EJB's, mainly Entity Beans which are interfaces
    to DB and servlet which is used as user interface. As the interface to
    entity beans i'm using statefull session bean. Every call from servlet
    have to pass throught it.
    To authenticate users I'm using DatabaseServerLoginModule. Users are
    able to login, but then they try again to execute eny method from
    session bean the server throws exception
    Authentication exception, principal=null
    What am i doing wrong ?? Should I store the users principal or
    it is stored in session context ?
    
    Cheers,
    --
    Marcin Krasowski mkrasowski (at) zagiel (dot) com (dot) pl
    
    To iterate is human, to recurse divine.
    L. Peter Deutsch
- 4
  - J2ME interview questionshey all,
    
    i am wondering if u ca give me j2me interview questions link or u can
    advice me regarding that.
    
    Thanks!
- 4
  - How to compute a regex match against an object's parameter by name?Consider that you want to do a regex match on the contents of an
    attribute of that object. Say, for example, the contents of:
    
    SomeObjectInstance.x
    
    All is well unless you don't know ahead of time that "x" is the
    attribute that the user will search against. Suppose that the object
    can have any attribute name, and even all those possibilities aren't
    known at compile time. The user can/will select this attribute, as well
    as the regex pattern.
    
    So the trick is how to apply the match against "x" in this case with
    only "x" as a string passed to the method?
    
    // this doesn't work!
    public boolean isRegexMatch(String p, String m, SomeObject o, String
    attribute){
    Pattern pat = Pattern.compile(p);
    Matcher mat = pat.matcher(o."attribute"); <--- doesn't work, obviously
    return (mat.find());
    }
    
    The above would be nice, but as expected-it doesn't work.
    
    So the question is, how to make the method functional without knowing
    what it will be passed for "attribute"?
    
    TIA!
    
    BogusException
- 5
  - Reading an array of byte with special delimiter....help me!!Hi guys,
    i've developed a java application that has in input a txt file with a
    standard format
    
    string string string
    string double double
    string double double
    
    and stores it into an array of byte with a fixed format,
    that is
    byte(whitespace)byte(whitespace)byte(;)byte(whitespace)byte(whitespace)byte(;)byte(whitespace)byte(whitespace)byte(;)
    
    that mean introducing byte whitespace value and byte ; value to
    separate different columns and different rows.
    Now i have to develop inverse routine,that has to read the array of
    byte and rebuild its original format.
    Can you help me with some idea ord code?
    I'm inexepert...please help me with clear suggest...
    I post you my routine that converts txt file into an array of byte
    P.S.In my txt file number of columns and rows change for each file,what
    is standard is a firtst headline that is an array of string and others
    row with the same format string array of doubles....
    
    [code]public byte[] getBytes(){
    byte middlerow=' ';
    byte endrow=';';
    Vector temp=new Vector(10000000);
    int i=0;
    String g=null;
    Riga r;
    Double val[];
    while(i<intest.length){
    //copio tutto nell'array di byte
    byte []bytes = intest[i].getBytes();
    // memorizza in byte un elemento del vettore alla volta
    for( Byte aByte : bytes ) {
    temp.addElement( aByte );
    
    }
    
    temp.addElement( Byte.valueOf( middlerow ) );
    
    i++;
    }
    temp.addElement(Byte.valueOf(endrow));
    System.out.println("Intestazione convertita in byte");
    
    for(int l=0;l<rows.size()-1;l++){
    r=(Riga)rows.get(l);
    g=r.getgeneid();
    temp.addElement(g.getBytes());
    temp.addElement(Byte.valueOf(middlerow));
    val=r.getvalues();
    
    for(int e=0;e<=val.length-1;e++){
    
    temp.addElement(Byte.valueOf(val[e].byteValue()));
    //val[e].byteValue() fa il casting double in byte
    temp.addElement(Byte.valueOf(middlerow));
    }
    temp.addElement(Byte.valueOf(endrow));
    
    }
    
    byte [] b=new byte[temp.size()];
    
    for (int k=0;i<temp.size();i++){
    b[k]=(((Byte)temp.elementAt(k)).byteValue());
    }
    return b;
    
    }[/code]
    
    Thanks for your help...
- 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
- 6
  - 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.
- 7
  - 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
    
    _______________________________________________
    email***@***.com mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-java
    To unsubscribe, send any mail to "email***@***.com"
- 8
  - 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?
- 8
  - 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?
- 8
  - Capture keystrokeHi,
    
    I have a command line java program and I am trying to capture a keypress
    from the user to say pause or stop the program. The only way I can get
    this to work at the moment is to read in a key but the program waits for
    the user to press return. I don't want this. I want to read the keypress
    asynchronously without the user hitting return.
    
    Anybody give me some pointers to how to do this?
    
    Thanks in advance
    
    Brian
- 12
  - Java Applet in Mac FireFox sets multiple DIFFERENT cookiesI've been fighting with this one for a couple days. I'm getting two
    (different) cookie headers being set.
    
    Quick Background:
    - Using a TurboGears web application.
    - Embedding an Applet to assist in file uploads (JUpload).
    - Applet uploads the files and sends the data to a secure URL.
    - A session ID preserves the user's login information so they don't
    get a 403 or have to login again.
    - Works totally fine in everything EXCEPT FireFox on a Mac (Safari
    works fine, as well as FireFox in Windows)
    
    Using Ethereal to look at the HTTP header, there are two "Cookies"
    values being set. The one that I set, and some other random one which
    I have NO idea where it is coming from. As follows:
    
    POST /import/upload HTTP/1.1
    Cookies: tg-visit=2k842fgj237dfkvh232c32hdh3832
    Content-length: 123541
    <blah blah blah other headers>
    Cookies: tg-visit=743jk82hfg94520fng62j8233jfg826
    
    The first tg-visit value (the session id) is correct. The second one
    which is the last header being set, is some other id being set. In
    Safari the tg-visit value is the same on both lines and it works fine.
    Other browsers properly only sets a single line. Firefox on a Mac
    gives me two different values, and I have NO idea why.
    
    Code to follow:
    
    <APPLET CODE="foo.bar.myApplet" ARCHIVE="/static/myApplet.jar"
    WIDTH="450" HEIGHT="320">');
    <PARAM name="type" value="application/x-java-applet;version=1.4" /
    >');
    <PARAM name="scriptable" value="true" />
    <PARAM name="postURL" value="${postUrl}" />
    <PARAM name="redirectURL" value="${redirectUrl}" />
    <PARAM name="tgVisitValue" value="tg-visit=${tgVisitValue}" />
    </APPLET>
    
    I have also tried to use the MAYSCRIPT attribute, but that doesn't
    really help.
    Using TurboGears which fills in the ${tgVisitValue} properly (which
    works fine).
    
    myApplet.java
    
    this.mycookies = this.getParameter("tgVisitValue",
    DEFAULT_COOKIE_STRING);
    if (this.mycookies == DEFAULT_COOKIE_STRING) {
    try
    {
    JSObject window = JSObject.getWindow(this );
    JSObject document =
    (JSObject)window.getMember( "document" );
    
    String cookies =
    (String)window.eval("self.document.cookie");
    if (cookies.equals("undefined")) // we're IE
    cookies = (String)document.getMember("cookie");
    
    // NAOMI
    // get all the unexpired cookies
    // this.mycookies = (String) document.getMember( "cookie" );
    
    }
    catch ( Exception e )
    {
    this.mycookies = "nocookie=0";
    }
    }
    
    This grabs the cookie value properly, so I don't think there are any
    problems there. The code that does all the HTTP magic is here:
    
    try{
    String boundary = "-----------------------------" +
    getRandomString();
    
    url = new URL(uploadURL);
    // Setting up the connection for upload.
    urlConn = url.openConnection();
    urlConn.setRequestProperty("Cookie", this.mycookies);
    urlConn.setDoInput (true);
    urlConn.setDoOutput (true);
    urlConn.setUseCaches (false);
    urlConn.setRequestProperty("Content-length", ""+totalFilesLength);
    urlConn.setRequestProperty("Content-Type",
    "multipart/form-data; boundary=" +
    boundary.substring(2,
    boundary.length()));
    
    String CRLF = "\r\n";
    
    urlConn.connect();
    
    // Retrieve OutputStream For upload (Post).
    dOut = new DataOutputStream(urlConn.getOutputStream());
    
    // Actual Uploading part.
    StringBuffer sb;
    File f;
    uploadedLength = 0;
    for(int i=0; i < aTotalFiles.length && !stop; i++){
    f = aTotalFiles[i];
    sb = new StringBuffer();
    // Line 1.
    sb.append(boundary);sb.append(CRLF);
    // Line 2.
    sb.append("Content-Disposition: form-data; name=
    \"File");sb.append(i);
    sb.append("\"; filename=\"");sb.append(f.toString());
    sb.append("\"");sb.append(CRLF);
    // Line 3 & Empty Line 4.
    sb.append("Content-Type: application/octet-stream");
    sb.append("Content-Length: " + f.length());
    sb.append(CRLF);sb.append(CRLF);
    
    dOut.writeBytes(sb.toString());
    uploadFileStream(f,dOut);
    dOut.writeBytes(CRLF);
    }
    
    // Telling the Server we have Finished.
    dOut.writeBytes(boundary);
    dOut.writeBytes("--");
    dOut.writeBytes(CRLF);
    dOut.flush ();
    
    if(!stop) progress.setString("File(s) uploaded. Wait for server
    response!");
    bInp = new BufferedReader(new
    InputStreamReader(urlConn.getInputStream ()));
    
    Any ideas?
- 12
  - 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)
- 12
  - 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
- 12
  - problems with TCPMONHi,
    I'm using axis 1.2-RC3 and eclipse 3.01RC. When i run tcpmon from
    command line
    >java -cp org.apache.axis.utils.tcpmon
    i use the panel for setting me as listener on port 8083 while tomcat is
    on port 8080.
    The problem is that when the client comunicate with server i dont have
    2 SOAP messages but the tcpmon loops infinite on an error message.
    I cant post you the output because tcpmon goes in infinite loop and its
    impossible to copy text.
    However i have set the axis path appropriately and i have added it to
    classpath and classpath to path so i can call tcpmon with java org.....
    I have also the needed jars (expecially) axis.jar included in axis
    server (on tomcat) and imported in eclipse project.
    Thank you in advance!

Author

Message

sshark97

Posted: 2004-2-7 2:04:00

Top

java-programmer, Eclipse : JCE problem Hi,

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/

Index ‹ java-programmer

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- 1
  - 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
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    directory?
    
    and
    
    2. how do I relatively relate to the path of the files located inside
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    Thanks
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    I have a great problem with my JTable. I have a JTable with few lines
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- 3
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    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
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- 4
  - 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
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    benefit. (Anyone disagree?)
    
    --
    monique
    
    Ask smart questions, get good answers:
    http://www.catb.org/~esr/faqs/smart-questions.html
- 5
  - but *very* apropos] Future reuse of codeLOL!
    
    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.
    >
    >
- 6
  - 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
- 7
  - 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
- 8
  - 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.
- 9
  - 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?
- 10
  - 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
- 11
  - 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
- 12
  - 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
- 13
  - 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
- 14
  - 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);
    }
- 15
  - 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....