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- 1
  - using ClassDep to reduce rt.jari have been trying to use the JINI tool ClassDep to create a list of the
    dependencies of a program i have written, but have been unsuccessful. when
    i run it i output a list of classes that ClassDeps says my program needs,
    but when i create an rt.jar file containing only those classes (yes, in the
    appropriate package directories) i get the following:
    NoClassDefFoundError: java.lang.ArrayStoreException.
    
    i figured maybe it was a fluke, and just manually included the class.
    after doing so i got the following, more confusing error:
    error: java.lang.Error: java.io.UnsupportedEncodingException: Cp1252
    
    Cp1252 is not something i specifically make reference to in my program, and
    have only a nebulous idea of what it even is/does.
    
    anyway, though, that's beside the point: i would really like to make a
    slimmed down version of rt.jar to fit my specific needs according to the
    classes that are needed by my app.
    
    is there any way to do this that works, or am i just using ClassDep
    incorrectly?
    
    Please Help!
    Thank You!
    -Voltaic
- 4
  - Java Swing font anti-aliasing w/o desktop environmentHello all,
    
    With the newer versions of Java your Swing apps can look extra pretty
    thanks to font smoothing. When using Ubuntu (as I am) the builtin
    desktop environment configurations set this up for you - when running
    GNOME, KDE, or XFCE it looks great. But I choose to run my .xsession
    file instead, which loads FVWM. And somewhere along the line something
    isn't set right and I don't get pretty smoothed fonts in my Swing apps.
    I checked environment variables and I can't see it there, so I'm
    thinking it may be an X resource? I don't know; if anybody has any
    ideas on which knob I can twiddle to get the pretty fonts back, I'd
    greatly appreciate it!
    
    Best regards.
    
    --
    Taylor Venable
    email***@***.com
    http://real.metasyntax.net:2357/
- 4
  - AWT Cursor in vista problemHi,
    i have an applet with a black background.
    when i set the Cursor to Cursor.TEXT_CURSOR in Vista the cursor is
    displayed also in black, and it is not seen.
    any idea???
- 4
  - How to place a window in the center of the screen ?I would like to open a window and to placed it at a certain position on a screen
    (e.g. in the center).
    
    How do I do this? My (simplified) current code looks like:
    
    public class testGBL extends JFrame implements ActionListener {
    JLabel lab1;
    ....
    JButton butBack;
    
    public testGBL() {
    
    ...
    Container contentPane = getContentPane();
    GridBagLayout gridbag = new GridBagLayout();
    GridBagConstraints c = new GridBagConstraints();
    contentPane.setLayout(gridbag);
    
    c.fill = GridBagConstraints.HORIZONTAL;
    
    butBack = new JButton("Back");
    c.gridx = 0;
    c.gridy = 0;
    c.weightx = 1.0;
    c.gridwidth = 2;
    gridbag.setConstraints(butBack, c);
    butBack.setEnabled(false);
    butBack.addActionListener(this);
    contentPane.add(butBack);
    ....
    }
    
    public static void main(String args[]) {
    testGBL window = new testGBL();
    window.setTitle("test");
    window.pack();
    window.setVisible(true); }
    }
- 4
  - java graph theoryi am a student tryingto write a progamme that will use graphs as their
    starting point but dont know where to start. i have a small amount of
    code to get me started but not much help.
    
    If anyone can help me in anyway woulf be helpful.( places to look/
    tips/ people to speak to/ books to look @ etc..)
- 4
  - DND using XML Hi,
    
    I want to transfer a block of XML between 2 DND objects in java
    
    What's the best way to do this?
    
    steve
- 9
  - dynamic instanciation of a generic classHi,
    
    I've a question about Tiger (Java 5), genercity and dynamic instanciation
    of class.
    
    I can't found tutorial or sample via the Net.
    
    By exemple :
    
    public class A<T>
    {
    private T v;
    
    public A(T v)
    {
    this.v=v;
    }
    
    public void test()
    {
    System.out.println(v.getClass().getName());
    }
    }
    
    I'd like instanciate the A class with something like that : Class.forName
    ("A").... but why can I specified T parameter ?
    
    Please, send me some sample or URL.
    
    Thanks,
    Arnaud.
- 10
  - TCP client application does detect network failureHi,
    
    This is a behavior of the TCP socket in Java I dont' understand:.
    Let say we have a simple client/server application running on TWO different
    machines.
    The client send bytes to the server.
    The server recieved the bytes and wait for about X sec.
    During this waiting time, we disconnect the server from the network (just by
    unplugging the server network cable).
    After the waiting time the server is aware of the network failure (a
    SocketException is thrown : connection reset, because it is trying to send
    the response)
    But on the client side it is still stuck on a "rcv =
    commandInput.readLine();" statement (see after for the complete code), it
    will never be aware of the network failure !!! Even after one hour the
    client is still waiting to read something on closed socket. Is this the
    normal behavior ?
    
    In reality we are dealing with an application that use the FTP server to
    server mode (we are controlling only the command socket, the data transfer
    is made by the servers). We have to transfer huge file, thus we can not set
    up a time out. If the last scenario occurs, some of our transfers are stuck
    and it is not possible for us to detect the failure. The client will wait
    for ever the response.
    
    Does anybody have already deal with that ?
    
    Below is the simple client and server I made in order to make my experiment.
    The client just read the keyboard input and send it to the server; the
    server just echo the request except if the request
    is 'wait X', in this case it will wait for X sec before responding.
    
    Thanks by advance,
    
    Olivier MERIGON
    
    CLIENT:
    ----------------------------------------------------------------------------
    -------
    package com.iratensolutions.test.ftp;
    
    import java.io.BufferedReader;
    
    import java.io.IOException;
    
    import java.io.InputStreamReader;
    
    import java.io.OutputStreamWriter;
    
    import java.io.PrintWriter;
    
    import java.net.Socket;
    
    /**
    
    * A Client/Server application to test the network failure behavior with TCP.
    
    * This the client part. It just sends the keyboard input to the server.
    
    * @author Olivier MERIGON
    
    */
    
    public class TestNetworkFailureClient {
    
    public static void main(String[] args) {
    
    if (args.length != 1) {
    
    System.out.println("usage: java
    com.iratensolutions.test.ftp.TestNetworkFailureClient serverAdress");
    
    }
    
    Socket commandSocket = null;
    
    BufferedReader commandInput;
    
    BufferedReader keyboardInput;
    
    PrintWriter commandOutput;
    
    try {
    
    commandSocket = new Socket(args[0], 666);
    
    commandInput = new BufferedReader(new
    InputStreamReader(commandSocket.getInputStream()));
    
    keyboardInput = new BufferedReader(new InputStreamReader(System.in));
    
    commandOutput = new PrintWriter(new
    OutputStreamWriter(commandSocket.getOutputStream()));
    
    } catch (Exception e) {
    
    e.printStackTrace();
    
    return;
    
    }
    
    System.out.println("CLIENT STARTED");
    
    String snd;
    
    String rcv = null;
    
    try {
    
    do {
    
    System.out.print("KEYBOARD: ");
    
    snd = keyboardInput.readLine();
    
    if (snd != null) {
    
    commandOutput.println(snd);
    
    commandOutput.flush();
    
    System.out.println("SND: " + snd);
    
    rcv = commandInput.readLine();
    
    System.out.println("RCV: " + rcv);
    
    }
    
    } while (rcv != null);
    
    } catch (IOException e1) {
    
    e1.printStackTrace();
    
    }
    
    }
    
    }
    
    --------------------------------------------------------------------------
    
    SERVER
    
    ----------------------------------------------------------------------
    
    package com.iratensolutions.test.ftp;
    
    import java.io.DataInputStream;
    
    import java.io.IOException;
    
    import java.io.PrintStream;
    
    import java.net.ServerSocket;
    
    import java.net.Socket;
    
    /**
    
    * A Client/Server application to test the network failure behavior with TCP.
    
    * This the server part. The server can wait X second after responding to a
    request.
    
    * If a wait request is received, the server just answer the time waited
    after
    
    * the requested wait time, otherwise it respond immediatly the request
    number.
    
    * usage: wait intNbSec | any text
    
    * @author Olivier MERIGON
    
    */
    
    public class TestNetworkFailureServer {
    
    public static void main(String args[]) {
    
    ServerSocket echoServer = null;
    
    String line;
    
    DataInputStream is;
    
    PrintStream os;
    
    Socket clientSocket = null;
    
    try {
    
    echoServer = new ServerSocket(666);
    
    System.out.println("SERVER STARTED");
    
    } catch (IOException e) {
    
    System.out.println(e);
    
    }
    
    while (true) {
    
    try {
    
    clientSocket = echoServer.accept();
    
    System.out.println("Handling new client...");
    
    is = new DataInputStream(clientSocket.getInputStream());
    
    os = new PrintStream(clientSocket.getOutputStream());
    
    int loopId = 0;
    
    do {
    
    line = is.readLine();
    
    System.out.println("RCV: " + line);
    
    //Handle "Wait" command
    
    if (line.trim().startsWith("wait")) {
    
    String[] tab = line.split("\\s");
    
    boolean ok = false;
    
    try {
    
    int nbSec = Integer.parseInt(tab[1]);
    
    System.out.println("...waiting for " + nbSec + " sec.");
    
    try {
    
    Thread.sleep(nbSec * 1000);
    
    } catch (InterruptedException e1) {
    
    }
    
    String resp = "...end of wainting periode of " + nbSec + " sec.";
    
    os.println(resp);
    
    System.out.println("SND: " + resp);
    
    ok = true;
    
    } catch (Exception e) {
    
    ok = false;
    
    }
    
    if (!ok) {
    
    String resp = "usage: wait intNbSec | any text";
    
    os.println(resp);
    
    System.out.println("SND: " + resp);
    
    }
    
    //Handle "normal" action
    
    } else {
    
    os.println("# " + loopId);
    
    System.out.println("SND: # " + loopId);
    
    }
    
    loopId++;
    
    } while (line != null);
    
    } catch (IOException e) {
    
    System.out.println(e);
    
    }
    
    }
    
    }
    
    }
- 11
  - Panel text not showing in JFrameI have a JFrame to display after a button is clicked. The following
    JFrame appears, but the label text does not appear until the thread is
    completed. Any advise:
    
    public void run(){
    JPanel panel = new JPanel(); // create pane content object
    JLabel prompt = new JLabel("Processing log files");
    
    panel.add(prompt);
    
    Container contentPane = myFrame.getContentPane();
    contentPane.add(panel);
    
    myFrame.setTitle("Processing logs...Please Wait");
    myFrame.setBounds(100,100,350,75); // position frame
    myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    myFrame.toFront();
    panel.add(prompt);
    myFrame.setVisible(true);
    myFrame.pack();
    System.out.println ("pack1 done");
    myFrame.repaint();
    myFrame.pack();
    }
- 11
  - What is the difference between a BMP EntityBean and a DAO ?As I read in a couple of articles a BMP (Bean Managed Persistence is an EntityBean
    where the programmer has to care about the SQL statements.
    On the other side a DAO implements the direct access to an SQL database.
    
    But isn't that the same?
    What are the differences ?
    
    Lars
- 11
  - sending a message from jboss to all java-clientsHi
    
    I'm building a j2ee Application on top of j2ee and JBoss 4.0.
    The Clients connected to JBoss are non-web Swing Clients.
    
    If One Clients changes the data on a bean/in the db, all the other clients
    connected to the jboss have to be informed about the change, so they can
    update der UI.
    On a standalone Java-App i would use listeners to solve this, but as im new
    to j2ee i have no idea how to realize this with j2ee and jboss.
    
    It would be great to get some ideas on how to solve this problem.
    
    greets from Germany
    
    Johannes Hermen
- 12
  - JFace getting startedHi
    
    I try to run a simple SWT/Jface example. I am running this from inside
    eclipse 3.2.0 and I have included the following in my classpath:
    swt.jar - Taken from swt-3.3M3-win32-win32-x86.zip
    jface.jar - Taken from program files\eclipse\plugins and Renamed from
    
    org.eclipse.jface_3.2.0.I20060605-1400.jar
    
    Here is the class:
    
    import org.eclipse.jface.window.*;
    import org.eclipse.swt.widgets.*;
    
    public class MyJFaceExample1 extends Window {
    
    public MyJFaceExample1() {
    // super(null); //Wont compile with null as the beginner example says
    it should
    super(new Shell()); //Compiles
    }
    
    public static void main(String[] args) {
    MyJFaceExample1 demo = new MyJFaceExample1();
    demo.setBlockOnOpen(true);
    demo.open();
    Display.getCurrent().dispose();
    }
    
    ------------------------------------------------------------
    
    This compiles fine but when I try to run this I get:
    java.lang.NoClassDefFoundError:
    org/eclipse/core/commands/common/EventManager
    
    I then copy c:\program
    files\eclipse\plugins\org.eclipse.core.commands_3.2.0.I20060605-1400.jar
    and rename it to core.jar.
    
    I then get the following error: java.lang.NoClassDefFoundError:
    org/eclipse/core/runtime/ListenerList
    
    Then I am stuck.
    
    Please help me with getting started with JFace.
- 13
  - Compile error help (linking a class library)Hi,
    
    I set the CLASSPATH correctly but still get the following compile error. I
    also tried the "-classpath" alternative and get the same error message.
    
    /home/yao/eh/jython-20.class(org/python/core/PyInteger.java):4:
    class PyInteger is public, should be declared in a file named
    PyInteger.java
    (source unavailable)
    
    But the class PyInteger is in a file PyInteger.java, just it is in the
    class jython-20.class but no a .java source file. I use to do things like
    this (linking with a class library and use the classes provided in it) a
    lol before. But why this time, it's not working? Did I missing something?
    
    Thanks,
    Stan
- 16
  - How does one combine the Adapter and Factory design patterns in a memory efficient way?I'm using the adapter pattern, and I've got a factory to generate adapters
    for passed in adaptees. Let's call the class of the objects getting adapted
    "Foo", and the Adapter class itself "Bar".
    
    So here are some details specific to my situation:
    
    1) the constructor for Bar is private and visible to the factory (Bar is
    acting as its own factory), so I can completely control when and how Bar
    gets instantiated.
    2) If an existing adapter for a given instance of Foo doesn't exist yet,
    I'll want to create a new Bar which matches with it.
    3) If there already is a adapter h for Foo, I have to return that existing
    match, and NOT generate a new one.
    4) upon a request for an adapter for null, I return null.
    
    This is relatively easy to do if I have infinite memory. I just create a
    Map<Foo,Bar>, like so:
    
    <code>
    public class Bar {
    private final Foo f;
    
    private Bar(Foo f) {
    this.f = f;
    }
    
    private final static Map<Foo,Bar> mapping = new
    ConcurrentHashMap<Foo,Bar>();
    
    public static Bar make(Foo f) {
    if (impl == null) {
    return null;
    }
    synchronized (mapping) {
    if (!mapping.containsKey(f)) {
    mapping.put(f, new Bar(f));
    }
    Bar b = mapping.get(f);
    assert returnValue != null;
    return returnValue;
    }
    }
    
    public void newInterfaceWhichModifiesState() {
    this.f.oldInterfaceWhichModifiesState();
    }
    
    public int newInterfaceWhichGetsState() {
    return this.f.oldInterfaceWhichGetsState();
    }
    }
    </code>
    
    However, it's possible that the calling code is generating billions and
    billions of instances of Foo, and then throwing them away after their first
    use. My Map would prevent the garbage collector from being able to reclaim
    those instances. I can safely delete those "throwaway Foos" and their
    matches from my Map, because if there doesn't exist a reference to some
    instance of Foo anywhere else in the JVM, then it can't possibly ever occur
    that that instance will ever get passed into my make(Foo) method, in which
    case, I would never need to return its corresponding Bar.
    
    The two potential-solutions I looked at, Maps of WeakReferences and
    WeakHashMap, turned out not to satisfy my requirements.
    
    If instead of a Map<Foo,Bar>, I had a Map<Foo,WeakReference<Bar>>, then it's
    possible that the matching Bar would get garbage collected, but the instance
    of Foo would get passed in again, and there's no way for me to recover its
    matching pair, thus violating condition (3) mentioned above.
    
    If I replace Map<Foo,Bar> with WeakHashMap<Foo,Bar>, none of the keys will
    get GCed, because instances of Bar contain a strong reference to Foo, via
    the private field f. If I change that field to a weak reference, then it's
    possible the instance of Foo that's being adapted will get GCed while the
    corresponding adapter is still in use, resulting in the newInterface()
    method failing.
    
    I think what I need is some sort of special PairOfWeakReference class such
    that if there are any references to either an instance of Foo or its
    corresponding Bar, then BOTH remain uncollectable. However, once there do
    not exist any strong references to either instances, then the pair become
    collectable simultaneously.
    
    Using a pair class, as in:
    
    <code>
    public class Pair<A,B> {
    public final A a;
    public final B b;
    
    public Pair(A a, B b) {
    this.a = a;
    this.b = b;
    }
    }
    </code>
    
    WeakReference<Pair<Foo,Bar>> won't work either, because the WeakReference
    class is checking against references to instances of the Pair class, rather
    than references to the instances of Foo and Bar.
    
    This adapter-factory combination doesn't sound like something that unusual
    or obscure, so I figure I must be missing something simple from effectively
    implementing it. Can anyone tell me what that is?
    
    - Oliver
- 16
  - Java (SE6) documentation in info formatHi,
    
    is it possible to download uptodate Java documentation in .info
    file(s)?
    
    Thanks,
    P

Author

Message

Peter Mount

Posted: 2005-2-1 21:37:00

Top

java-programmer, I'm looking for jsp hosting Hello

I'm looking for reliable jsp web hosting. I won't be using mysql, I'm
more interested in postgres or other robust rdms

Thanks

Peter Mount
email***@***.com

Aquila Deus

Posted: 2005-2-1 22:19:00

Top

java-programmer >> I'm looking for jsp hosting Peter Mount wrote:
> Hello
>
> I'm looking for reliable jsp web hosting. I won't be using mysql, I'm

> more interested in postgres or other robust rdms

Why not host by yourself? You could register host name at www.no-ip.com
for free.

Bob

Posted: 2005-2-2 3:42:00

Top

java-programmer >> I'm looking for jsp hosting Peter Mount wrote:
> Hello
>
> I'm looking for reliable jsp web hosting. I won't be using mysql, I'm
> more interested in postgres or other robust rdms

Well, this has intrigued me for some time.

http://www.myjavaserver.com/

I've not yet had a reason to sign up, but I am curious to find out what
the catch is.
--
Bob

frankgerlach22@gmx.de

Posted: 2005-2-2 8:11:00

Top

java-programmer >> I'm looking for jsp hosting Check lycos' virtual dedicated server (VDS). costs about 7$/month and
gives you (nearly) complete root access. You can install your favourite
RDBMS, Tomcat or whatever. My experience is that it is worth the money.

frankgerlach22@gmx.de

Posted: 2005-2-2 8:11:00

Top

Andrew Thompson

Posted: 2005-2-2 18:09:00

Top

java-programmer >> I'm looking for jsp hosting On Tue, 01 Feb 2005 19:41:58 +0000, Bob wrote:

> http://www.myjavaserver.com/
>
> I've not yet had a reason to sign up, but I am curious to find out what
> the catch is.

...hmmm. I was about to respond that they are not often accepting new
membership, but it seems they *are* accepting new members at this moment.
<http://www.myjavaserver.com/signup>

That page often read 'sorry, no new members for the moment..'.

--
Andrew Thompson
http://www.PhySci.org/codes/ Web & IT Help
http://www.PhySci.org/ Open-source software suite
http://www.1point1C.org/ Science & Technology
http://www.LensEscapes.com/ Images that escape the mundane

Index ‹ java-programmer

Next
- 1
  - xmlencoder/decoder persistence delegateHi,
    I am using the xmlencoder/decoder classes to save objects, some of
    which do not have no-argument constructors. I understand that one could
    use something like:
    
    String[] prop = {"param1", "param2"};
    MyEncoder.setPersistenceDelegate(MyClass.class
    new DefaultPersistenceDelegate(prop);
    
    My question is, what if one has a class like:
    class A{
    -----
    B objB = new B(C c, D d);
    -----
    }
    
    class B{
    -----
    E objE = new E(F f, G g);
    -----
    }
    
    I need to save an object of A that contains an object of B that does
    not have a default constructor and B in turn needs to store an object
    of E which again does not have a default constructor. Assuming that all
    attributes of all classes that need to be saved do have the required
    setter and getter methods, I couldn't find a way to save all those
    objects because I can set the persistence delegate for only one class.
    Is it possible to save all the objects?
    TIA.
    --Jo
- 2
  - java.io.Exception: Too many open files on sun OS 5.6I'm operating on sun OS 5.6
    I ping a host every 10 seconds to get knowlegde wheather it is running
    or not. After about one and a half hour I get this Exception:
    java.io.IOException: Too many open files
    at java.lang.UNIXProcess.forkAndExec(Native Method)
    at java.lang.UNIXProcess.<init>(UNIXProcess.java:54)
    at java.lang.Runtime.execInternal(Native Method)
    at java.lang.Runtime.exec(Runtime.java:546)
    at java.lang.Runtime.exec(Runtime.java:413)
    at java.lang.Runtime.exec(Runtime.java:356)
    at java.lang.Runtime.exec(Runtime.java:320)
    at de.optimare.VRX8100.MainControl.pingRecorder(MainControl.java:226)
    ... and so on.
    
    I set rlim_fd_max = 1024 in /etc/system
    I tried to set the ulimit -n 1024 in my script
    
    but it had no effect.
    
    Here is my code: The pingRecorder is called every 10 seconds from a
    swing.Timer.
    runtime is the Runtime.getRuntime().
    
    // used on unix system
    private void pingRecorder() {
    logDate = new Date();
    
    try {
    ping = runtime.exec(pingPath);
    ping.waitFor();
    exitValue = ping.exitValue();
    switch (exitValue) {
    case 0:
    // stop the ping timer
    if (pingTimer != null) {
    pingTimer.stop();
    }
    
    if (! processIsInitialized) {
    System.out.println(logDate.toString() + " Recorder alive. Now
    wait " + initialWaitTime/1000 + " seconds to initialize");
    //wait for recorder is booting
    Thread.sleep(initialWaitTime);
    // now init the VRX8100 process!
    initProcess();
    }
    
    break;
    
    case 1:
    System.out.println(logDate.toString() + " Recorder off.
    Memory: " + runtime.totalMemory());
    break;
    default:
    System.out.println(logDate.toString() + " Recorder off.
    Memory: " + runtime.totalMemory());
    break;
    }
    
    } catch (IOException io) {
    io.printStackTrace();
    } catch (InterruptedException ie) {
    ie.printStackTrace();
    }
    }
    
    I would be very happy if anyone knows about anything due to this
    problem.
    Is it a specific sun problem? Is it possible to control the number of
    open files by Java?
    Many thanks for any help
    Gert
- 3
  - Authentication in different tiersHi
    
    How can I access authentication information in different tiers of a
    project? We are working on a multi tier J2EE project, and we want to
    authenticate user (we are not sure whether using JAAS or not). Is
    there any simple way to have access to authentication information in
    all tiers including Service Facade, Business Doman, and Data Access
    tiers?
    If it was just a web tier we could save authentication information in
    user session, but it is not good to couple business tier, data access
    tier and ... to web specification (including HttpSession).
    
    A solution is passing authentication object using method parameters
    but it is not a very good, solution, and all the inter-tier method
    calls should contain authentication information.
    
    Note: we are working on a multi-tier and potentialy distributed
    project, so I think attaching authentication info to Thread is not a
    good solution.
    
    Amir Pashazadeh
- 4
  - Java NIO selector close idle connections?I have an object attached to all selectionKeys with a timestamp
    showing last activity
    on the connection. So how/when do i run through the keys to find
    connections
    that have been idle too long? Can i do it in the same main selector
    loop that handles accept/read etc like this:
    
    while (true) {
    
    selector.select(sometimeout);
    Iterator selectedKeys = selector.selectedKeys().iterator();
    while (selectedKeys.hasNext()) {
    ..process the selected key... accept/read etc..
    }
    
    if (timeToCheckForIdleConnections) {
    Set<SelectionKey> k = selector.keys();
    .. get attachment of all keys and check their timestamp for last
    activity.. if idle for too long then close them!
    }
    
    }
    
    or should I use a timethread that signals back to the main selector
    thread which connections to close?
- 5
  - Clarification of JavaLive delegates criticism?Back when the new J2SE1.5 features were announced, there was a
    JavaLive community chat
    (http://java.sun.com/developer/community/chat/JavaLive/2003/jl0729.html)
    in which Neal Gafter explains the Sun stance on lack of support for
    delegates:
    
    ... There are serious semantic problems with trying to add delegates
    to a language in a consistent way. The main problem is that once you
    call the delegate, the original class instance is no longer part of
    the call chain, so overriding in the original class no longer takes
    precedence over the delegate. ...
    
    Could someone please explain this to me a little more fully? It
    sounds like he's saying that delegates cannot follow a subclass call
    chain if they are created from an object stored in a superclass
    reference, but I can't tell if he means overriding delegates
    themselves. I would like to know:
    1) What exactly does he mean in less ambiguous terms? (Or maybe just
    simpler terms; it's been a while since my college programming
    languages course.)
    2) What an example of delegates 'failing' like this would look like.
    3) What is so significant about this problem.
    
    I am already familiar with the 'Truth about Delegates' dialogue
    between Sun and MS and the lack of true type safety of C# delegates,
    but not understanding this criticism bothers me. Any help would be
    greatly appreciated.
    
    Thanks,
    Jeff
- 6
  - Prentice.Hall.Introduction.to.Java.Programming.Comprehensive.Version.6th.Edition.Free download
    Prentice.Hall.Introduction.to.Java.Programming.Comprehensive.Version.
    6th.Edition. (ebook)
    download now http://w15.easy-share.com/7547361.html
- 7
  - &# in PARAM NAME causing problemsHello,
    
    I have an application that generates a HTML document that contains an
    applet. It places raw data into the PARAM NAME tag. Well, once in a blue
    moon it places the numeric character reference &# into the data. When my
    Java applet imports this using the getParameter command, it reacts
    differently between different version of IE. One solution is to not let my
    original application generate the sequence &#, however, this does not fix
    the HTML documents that have already been generated in the past. It would be
    nice to just fix the Java applet so it can import this raw data without
    having to recognize &# as a numeric character reference.
    
    Is this possible?
    
    Here is my HTML code:
    
    <CENTER><APPLET CODE="graphics.class" ALIGN=RIGHT HEIGHT=420 WIDTH=220>
    <PARAM NAME=Graphics VALUE="
    >=>.>/(%<!<!>((6<0>%(#(!(+>%(!(>(!>%(%>%>!(&/<(*<&>*/6>0>((!>+(%(<()<&(!>!(=(><!>#/)(#(6>+/=(.>+/1>&>#16<!/>(*(#/!(*(!/!(//#((>=1(/=/01)(/1=/!(=1//61!!6/>!61=>1!>/+!(!./!!+1%//./1*1<.&//./%.1!.+%*..<#&.%/.%%1.1/.&//.*.>1=!01*1=!!(.!1!<(&!)/*/(1#(+1+1!/)1!<!(11>>./#1)(>/%/*(//!>%/#/#((1<(/(616(&/)/<>#>.(%(1(+(<(+>1>+(>(%>&(+>((0(%((((>+(0(6>>()(/>+(&>%<%>.(6>#>>(!<.()(%<!>((!>!<&(!()<!(=(<>/>1<#??
    "></APPLET></CENTER>
- 8
  - Problems with Java Server Faces in JRun4 (and Tomcat)Hi!
    
    I have downloaded Java Server Faces (jsf-1_0.zip) to have a look at
    them. First I tried to install them in my JRun4 server, which supports
    J2EE 1.3. When starting the server after that I get the following
    Exception (and I can't run the JSF application):
    "04/23 18:26:57 error Could not pre-load servlet: JSPServlet
    [2]jrun.jsp.compiler.JRunTagLibraryInfo$InvalidTLDElementException:
    The tag function on line 14 is not a valid TLD element
    at
    jrun.jsp.compiler.JRunTagLibraryInfo$TLDParser.startElement(JRunTagLibraryInfo.java:627)
    at
    jrunx.util.SAXReflectionHandler.startElement(SAXReflectionHandler.java:24)
    at
    org.xml.sax.helpers.XMLReaderAdapter.startElement(XMLReaderAdapter.java:333)"
    
    Then I tried to install them in the Tomcat 4.0.6 server embedded in
    Netbeans 3.5.1. I guess it also follows the J2EE 1.3 specification but
    without the EJB:s. There when i start the server I get the message:
    "Apache Tomcat/4.0.6
    PARSE error at line 6 column 19
    org.xml.sax.SAXParseException: Element type 'taglib' must be
    declared."
    
    I can however run the faces application in Tomcat. The only problem is
    when I run the 'jsf-components' demonstration and try to 'view jsp' or
    'view source' with ShowSource.jsp. Then I get a compile-error:
    "org.apache.jasper.JasperException: This absolute uri
    (http://java.sun.com/jstl/core) cannot be resolved in either web.xml
    or the jar files deployed with this application"
    
    I've also tried with java.sun.com/jsp/jstl/core, which it says in the
    JSTL-documentation, but the same result. It seems that the
    JSTL-taglibraries referenced are not found or the server doesn't
    support external URI:s. I saw in the documentation that JSF is tested
    with J2SE 1.3.1_04 and later (I have 1.4.2_01), but does it need J2EE
    1.4 as well? I don't have J2EE 1.4 yet, so must I download another
    server as well?
    
    /Erik D
- 9
  - MIDP JVM for Palm and Pocket PCStephan Erlank wrote:
    
    > I've heard of J9 that comes with Visual Age Micro Edition, but I don't have
    > time to download 122mb over a 56k dial-up connection.
    
    VAME is discontinued and has been replaced by WebSphere Studio Device
    Developer.
    http://www-3.ibm.com/software/wireless/wsdd/
    
    But maybe that's what you meant.
    
    --
    Josef Garvi
    
    "Reversing desertification through drought tolerant trees"
    http://www.eden-foundation.org/
    
    new income - better environment - more food - less poverty
- 10
  - JTable refresh problemI have a JTable where I paint some of the cell backgrounds with
    a custom renderer. getTableCellRendererComponent() paints with
    drawLine() and fillRect() and that sort of thing. It's all working
    fine but when I drag another window over the JTable, or when I
    scroll it, sometimes it's not getting repainted correctly.
    Any ideas how to make it refresh or repaint itself at the right
    times?
    
    I looked in the group archives and there were a lot of other messages
    but they were about when a table's content changes dynamically.
    I'm not changing the content, I'm just trying to get the table
    to keep the correct content when scrolled and when other windows
    pass over it.
    
    Thanks in advance,
    
    - Mitch Gart
- 11
  - Socket latenciesHi all,
    
    I am working on a Java project and I am interested in measuring TCP
    performance over long delay links. Do you know if there is any way to
    simulate delay using Sockets, keeping the TCP protocol behaviour
    intact? I wrote a FilterInputStream that waits for some time and then
    reads from the stream, but I am afraid it could be not very accurate.
    
    Thank you.
    Daniela B
- 12
  - showdocument() problem (or bug?)I have a trusted applet that is supposed to generate a pdf file and
    save it as a temporary file on the local machine, then display it.
    Since display of such an animal can only happen with showDocument(URL,
    type) I am trying to build the url using :
    URL url = new URL("file:" + File.separator + File.separator +
    "filename.pdf");
    
    and this does indeed work IFF I run the applet locally. However, if the
    bloody thing is running connected to the server, it does not. Then the
    only command that works is
    URL url = new URL(getCodeBase(), "filename.pdf");
    so I had to bytestream the pdf down to server, have it install it in a
    file and make the call. A real waste, considering I'm supposed to be
    writing non-polluting software. Any ideas as to what's wrong with this?
    Thanks.
- 13
  - CLOB.createTemporary throws ClassCastException...I am also having the same problem. Does anyone have a solution? I read
    that the workaround is to somehow extract the underlying connection to
    give to the createTemporary method. Problem is I'm not sure how to do
    that!
    
    bartleby <email***@***.com> wrote in message news:<email***@***.com>...
    > I got the same probleme, have you fond out how to solve the problem ?
- 14
  - source compilation problem.when I try to compile a file called check.java which uses file.jar like this
    c:\javac -classpath .;file.jar check.java
    on PC using MS Windows XP it gives me the following crap:
    
    An unexpected exception has been detected in native code outside the VM.
    Unexpected Signal : EXCEPTION_ACCESS_VIOLATION occurred at PC=0x6D32797D
    Function=ZIP_Open+0x369
    Library=h:\jdk\jre\bin\zip.dll
    
    Current Java thread:
    at java.util.zip.ZipFile.getNextEntry(Native Method)
    at java.util.zip.ZipFile.access$400(ZipFile.java:26)
    at java.util.zip.ZipFile$2.nextElement(ZipFile.java:301)
    at com.sun.tools.javac.v8.code.ClassReader.openArchive(ClassReader.java:
    972)
    at com.sun.tools.javac.v8.code.ClassReader.list(ClassReader.java:1199)
    at com.sun.tools.javac.v8.code.ClassReader.listAll(ClassReader.java:1320
    )
    at com.sun.tools.javac.v8.code.ClassReader.fillIn(ClassReader.java:1340)
    
    at com.sun.tools.javac.v8.code.ClassReader.complete(ClassReader.java:104
    9)
    at com.sun.tools.javac.v8.code.Symbol.complete(Symbol.java:332)
    at com.sun.tools.javac.v8.comp.Enter.visitTopLevel(Enter.java:467)
    at com.sun.tools.javac.v8.tree.Tree$TopLevel.accept(Tree.java:390)
    at com.sun.tools.javac.v8.comp.Enter.classEnter(Enter.java:442)
    at com.sun.tools.javac.v8.comp.Enter.classEnter(Enter.java:456)
    at com.sun.tools.javac.v8.comp.Enter.complete(Enter.java:588)
    at com.sun.tools.javac.v8.comp.Enter.main(Enter.java:574)
    at com.sun.tools.javac.v8.JavaCompiler.compile(JavaCompiler.java:334)
    at com.sun.tools.javac.v8.Main.compile(Main.java:520)
    at com.sun.tools.javac.Main.compile(Main.java:36)
    at com.sun.tools.javac.Main.main(Main.java:27)
    
    Dynamic libraries:
    0x00400000 - 0x00407000 h:\jdk\bin\javac.exe
    0x77F50000 - 0x77FF6000 C:\WINDOWS\System32\ntdll.dll
    0x77E60000 - 0x77F45000 C:\WINDOWS\system32\kernel32.dll
    0x77DD0000 - 0x77E5B000 C:\WINDOWS\system32\ADVAPI32.dll
    0x78000000 - 0x7806F000 C:\WINDOWS\system32\RPCRT4.dll
    0x77C10000 - 0x77C63000 C:\WINDOWS\system32\MSVCRT.dll
    0x6D330000 - 0x6D45A000 h:\jdk\jre\bin\client\jvm.dll
    0x77D40000 - 0x77DC6000 C:\WINDOWS\system32\USER32.dll
    0x77C70000 - 0x77CAE000 C:\WINDOWS\system32\GDI32.dll
    0x76B40000 - 0x76B6C000 C:\WINDOWS\System32\WINMM.dll
    0x629C0000 - 0x629C8000 C:\WINDOWS\System32\LPK.DLL
    0x72FA0000 - 0x72FFA000 C:\WINDOWS\System32\USP10.dll
    0x5CD70000 - 0x5CD77000 C:\WINDOWS\System32\serwvdrv.dll
    0x5B0A0000 - 0x5B0A7000 C:\WINDOWS\System32\umdmxfrm.dll
    0x6D1D0000 - 0x6D1D7000 h:\jdk\jre\bin\hpi.dll
    0x6D300000 - 0x6D30D000 h:\jdk\jre\bin\verify.dll
    0x6D210000 - 0x6D229000 h:\jdk\jre\bin\java.dll
    0x6D320000 - 0x6D32D000 h:\jdk\jre\bin\zip.dll
    0x76C90000 - 0x76CB2000 C:\WINDOWS\system32\imagehlp.dll
    0x6D510000 - 0x6D58C000 C:\WINDOWS\system32\DBGHELP.dll
    0x77C00000 - 0x77C07000 C:\WINDOWS\system32\VERSION.dll
    0x76BF0000 - 0x76BFB000 C:\WINDOWS\System32\PSAPI.DLL
    
    Local Time = Tue Aug 03 02:35:56 2004
    Elapsed Time = 2
    #
    # The exception above was detected in native code outside the VM
    #
    # Java VM: Java HotSpot(TM) Client VM (1.4.1_01-b01 mixed mode)
    #
    # An error report file has been saved as hs_err_pid2592.log.
    # Please refer to the file for further information.
    #
    
    what should I do to compile this code.
- 15
  - Non-text based source code. I don't have much to add above what's said at the blog entry, so I'll
    just link to it:
    http://www.realityinteractive.com/rgrzywinski/archives/cat_ideas.html
    
    It's not a particularly novel idea (Roedy has mentioned it often in this
    newsgroup, for example; calls it "SCID" I believe), but it's interesting
    because (assuming those screenshots weren't doctored), it looks like we'll
    be seeing IDEs with practical support for non-text based source code in the
    near future (on the order of single-digit years?)
    
    - Oliver