java-programmer >>REALLY CHEAP computer programming ebook libraries just follow any of the links below

REALLY CHEAP computer programming ebook libraries just follow any of the links below

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- 2
  - Finding BCC receipientsIs there a way to see if a user (having sent you an email) has bcc'd
    that email to anyone else? Sun Java WebMail is being used.
    
    Mark
    ******
- 2
  - How to call an ejb from an ejb from another applicartion serverWhat is the preferred way to call an ejb on another application server
    from an ejb? Someone give me a clue? The only sollution I see in
    google are in the same application server.
    
    Mvg Andre Broers
- 5
  - in jvm, how do you leap?hi ..
    can anyone please help me answer this questions..
    i'm totally lost.. i dont know what leap really
    means in this context.. and i dont know
    how you would do that unknown thing in JVM..
    
    any help is appreciated!!
    
    thanks
- 5
  - Need to create custom taglib similar to bean:messageFirst off let me just say that while I know "java" pretty well from
    about 3-4 years ago, but I am not really up to speed on all the JSP and
    Struts things going on but I'm learning as fast as possible :-)
    
    That being said, I have been thrown feet first into a new project and
    have been asked to do this.
    
    So anyway I am using resource.properties files to store all of our
    strings and I have been adding them to our JSP's using the bean:message
    taglib.
    
    This works great and I have no problem creating different property
    files for multiple languages using localization.
    
    My problem is that the app we are writing is for one company that
    operates in different states (OH, IN, etc...) The business logic for
    each company is very similar but sometimes the language needs to change
    between states. Further confusing the issue is that this one company
    has sub companies which operate in multiple states and each company is
    very similar. So I have come up with the idea that I would like to use
    the "key" element of bean:message to try to create a sort of
    localization scheme for the companies and states.
    
    Here is is my idea. I would like to create a taglib that works exactly
    like the bean:message taglib except that you pass in key names that are
    like "promptname.company.state". The taglib will look for a key named
    "promptname.company.state" and if it exists it will return it, if not
    it looks for generic key for that company "promptname.company" if that
    does not exist it looks for "promptname". If that key does not exist
    it returns error or ???key?? as normal.
    
    The idea is that we create a generic base for the application and
    customize the prompts from the differences. Seems like a good idea to
    me, heck, there may even already be a taglib out there that does this?
    
    My problem is that I don't know where to start with extending the
    bean:message tag. Theoretically it wouldn't be a problem to just keep
    sending requests and stripping off .company and .state until you found
    one.
    
    Can someone point me in the right direction for doing this? This would
    really save me some time.
    
    Jason Stiles
    email***@***.com
- 5
  - java to java networkingI have not written any socket code before or done any RMI.
    I'd like to do the developer certification and also I have my own project
    waiting in the wings that would benefit from this. The latter is my primary
    concern.
    
    I have a distibuted java application (is this the right term?) that exists
    on many users PCs on a network. This is essentially just gui code. I then
    have a central java 'server' application that applies the model & all the
    business rules.
    The view application needs to deal just with the business app, which in turn
    deals with the data layer, MySQL, Flatfile or whatever. I think this is
    pretty standard practice?
    
    My basic understanding so far is that I should define the interface by which
    the protocol operates. I'm not entirely sure how to do this and what else I
    need to do, though I imagine proper threading will form a crucial aspect of
    this.
    
    Can anyone recommend a good book that assumes half decent OO & java skills,
    and that I can apply to the developer certification. I've got the Sybex
    book 'complete java2 certification' but it glosses over a great deal of
    networking.
    
    Does anyone know of anything online that would help me?
    
    Perhaps people could profer a Joshua Bloch style list of networking does and
    don'ts?
    
    TIA
    --
    Mike W
- 5
  - Struts and mapped propertyHi
    I'm using Struts with DynaActionForm wich as 3 to 8 Map as property, so I'm
    using mapped property.
    When I put them into HTML form it result in INPUT fields having names like
    'map1(property1)' this leads to problems in writing Javascript.
    Can I use another format in mapped property names?!
    
    thanx
    
    --
    ShadowMan
- 7
  - Java Gurus Help!Yep, shall do i use limewire but you didn't no I typed that....... ;)
    
    cheers Steve
- 8
  - How can we generate dynamic combo boxes in JSP filesi an a interview, this quwery has been asked by an interviewer, please
    give some suggestion
- 8
  - implement writeObject how? serializable singleton how?I have code that I want to execute only once ever, as a side-effect of
    constructing an object. I have put this in a static initializer. But,
    if I want to allow the object to be serialized I seem to be stuck,
    since the initializer is executed during deserialization.
    
    In the java developer's almanac:
    
    http://www.exampledepot.com/egs/java.io/DeserSingle.html
    
    There's an example of a serializable singleton:
    
    public class MySingleton implements Serializable {
    static MySingleton singleton = new MySingleton();
    
    private MySingleton() {
    }
    
    // This method is called immediately after an object of this
    // class is deserialized.
    // This method returns the singleton instance.
    protected Object readResolve() {
    return singleton;
    }
    }
    
    If I add code to the constructor, it executes during
    deserialization, so that doesn't work for me.
    
    Is there someway to determine within a static initializer or
    constructor that this object is being constructed and not being
    deserialized? If there were I could execute code only during the one
    construction of the object, and not again.
    
    I was thinking that I could implement readObject/writeObject. But, how can
    I implement writeObject? How do you represent the fields?
    
    In the oreilly RMI book there is an example of a writeObject method,
    but it doesn't explain how you are supposed to represent fields of the
    object. I've looked around a bit and found nothing.
- 8
  - fix horizontal sizeI have a JFrame that I'd like to fix so it is resizable vertically, but not
    horizontally. I can't seem to come up with any simple way of doing this, but
    it doesn't sound like it should be too difficult.
    
    Can anybody help. If I need to make it a JWindow, or something else, that
    shouldn't be a problem.
    
    Cheers
    Scott
- 8
  - Re:Clearlooks is unsupported??Hi,
    I am using RePast simulation package with Java 1.5 on Fedora Core 4.
    When I run the model (see below), I get the following message. The
    program works, but it generates pretty ugly interface.
    Could anyone please let me know how to solve this problem??
    Thank you.
    
    -----------------------------------------------------------------
    [jonghook@localhost GayModel]$ java -cp .:${REPASTJ}/repast.jar
    GayModel
    /usr/share/themes/Clearlooks/gtk-2.0/gtkrc:49: Engine "clearlooks" is
    unsupported, ignoring
    -------------------------------------------------------
- 8
  - Terminate a process treeHi group,
    
    I'm new here, so apologies if I ask this in the wrong way.
    
    I have been programming in java for about 2 months, and am currently trying
    to control an external application that I start using:
    
    Process proc;
    Runtime rt;
    
    proc = rt.exec("java.exe -cp ... etc.. something");
    
    Then I capture the input/output & error streams and thread them off.
    
    The problem I have, is that I need to architect for the eventuality of the
    external process locking up and not responding to requests. I have the
    whole capturing of streams in a timeout, so I can tell when the external
    program has not responded within a reasonable time, however when I issue the
    proc.destroy() method, the java.exe process takes up almost 100% cpu and
    never stops. I have to use operating system tools to perform a manual kill
    of the process.
    
    I can only assume that the proc.destroy() doesnt kill the entire process
    tree, and because the command line starts off java.exe, which runs the
    something.class file, a process is orphaned somewhere.
    
    Any help would be much appreciated.
    
    Thanks
    
    Wayne
- 11
  - EJB Deploy issues in RAD 6 I get the following exception while trying to deploy a EJB project in
    my test environment
    com.ibm.etools.rmic.RMICException: RMIC Command returns RC = 1.
    at com.ibm.etools.rmic.RMICOperation.invokeCommandLine(Unknown Source)
    at com.ibm.etools.rmic.RMICOperation.rmic(Unknown Source)
    at com.ibm.etools.rmic.RMICOperation.generateStubs(Unknown Source)
    at com.ibm.etools.rmic.UIRMICBeansOperation.generateStubs(Unknown
    Source)
    at com.ibm.etools.rmic.RMICOperation.run(Unknown Source)
    at com.ibm.etools.ejbdeploy.EJBDeployer.visit(Unknown Source)
    at com.ibm.etools.ejbdeploy.EJBDeployer.doExecute(Unknown Source)
    at com.ibm.etools.ejbdeploy.EJBDeployer.execute(Unknown Source)
    at com.ibm.wtp.j2ee.deploy.J2EEDeployOperation.deploy(Unknown Source)
    at com.ibm.wtp.j2ee.deploy.J2EEDeployOperation.execute(Unknown Source)
    at com.ibm.wtp.common.operation.WTPOperation.doRun(Unknown Source)
    at com.ibm.wtp.common.operation.WTPOperation$1.run(Unknown Source)
    at org.eclipse.core.internal.resources.Workspace.run(Unknown Source)
    at org.eclipse.core.internal.resources.Workspace.run(Unknown Source)
    at com.ibm.wtp.common.operation.WTPOperation.run(Unknown Source)
    at com.ibm.wtp.common.operation.WTPOperationJobAdapter.run(Unknown
    Source)
    at org.eclipse.core.internal.jobs.Worker.run(Unknown Source)
    
    Any idea why this happens?
- 12
  - Bug#388596: gcj-4.1: CharsetEncoder.canEncode() gives different results than Sun versionPackage: gcj-4.1
    Version: 4.1.1-13
    Severity: normal
    
    The following test program gives different results with gcj and Sun JDK:
    
    // A.java
    import java.nio.charset.Charset;
    import java.nio.charset.CharsetEncoder;
    
    public class A {
    public static void main(String[] args) throws java.io.IOException
    {
    CharsetEncoder enc = Charset.forName("US-ASCII").newEncoder();
    System.out.println(enc.canEncode('\u00e4'));
    }
    }
    // end
    
    $ javac A.java
    $ /usr/lib/jvm/java-1.5.0-sun/bin/java A
    false
    $ /usr/lib/jvm/java-gcj/bin/java A
    true
    
    The Sun version seems to return something like (c > 31 && c < 127),
    which makes sense, whereas gcj always gives true.
    
    This breaks lots of code, such as Apache JaxMe 2 version 0.51
    (specifically the MarshallerTest in the test suite, which generated
    invalid XML with gcj).
    
    -- System Information:
    Debian Release: testing/unstable
    APT prefers testing
    APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable'), (1, 'experimental')
    Architecture: i386 (i686)
    Shell: /bin/sh linked to /bin/bash
    Kernel: Linux 2.6.17-1-686
    Locale: LANG=sv_SE.UTF-8, LC_CTYPE=sv_SE.UTF-8 (charmap=UTF-8)
    
    Versions of packages gcj-4.1 depends on:
    ii gcc-4.1 4.1.1-13 The GNU C compiler
    ii gcj-4.1-base 4.1.1-13 The GNU Compiler Collection (gcj b
    ii gij-4.1 4.1.1-13 The GNU Java bytecode interpreter
    ii java-common 0.25 Base of all Java packages
    ii libc6 2.3.6.ds1-4 GNU C Library: Shared libraries
    ii libc6-dev 2.3.6.ds1-4 GNU C Library: Development Librari
    ii libgcc1 1:4.1.1-13 GCC support library
    ii libgcj7-dev 4.1.1-13 Java development headers and stati
    ii libgcj7-jar 4.1.1-13 Java runtime library for use with
    ii zlib1g 1:1.2.3-13 compression library - runtime
    
    Versions of packages gcj-4.1 recommends:
    ii fastjar 1:4.1.1-13 Jar creation utility
    
    -- no debconf information
    
    --
    To UNSUBSCRIBE, email to email***@***.com
    with a subject of "unsubscribe". Trouble? Contact email***@***.com
- 14
  - Any available Web-based Calendar module written in JSPHi,
    I wonder if there is any available Web-based Calendar module that
    allows users to enter/edit event, set repeating frequency and reminder
    of the event. I need something written in JSP.
    Thanks in advance.
    Tung Chau

Author

Message

Posted: 2004-1-10 21:35:00

Top

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Index ‹ java-programmer

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- 1
  - java does not runThis is a multi-part message in MIME format.
    
    Hi folks,
    
    Downloaded the latest XP updates and the java stopped working(?) When I load a page with j.s. it doesn't run ie menumachine shows up in the source code but my computer does not display it.
    
    IE.>tools>internet options>advanced and Java Console enabled and JIT compiler for virtual machine enabled
    
    Any help would be appreciated.
    
    Dave
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
    <HTML><HEAD>
    <META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
    <META content="MSHTML 6.00.2800.1276" name=GENERATOR>
    <STYLE></STYLE>
    </HEAD>
    <BODY bgColor=#ffffff>
    <DIV><FONT face=Arial>Hi folks,</FONT></DIV>
    <DIV><FONT face=Arial></FONT> </DIV>
    <DIV><FONT face=Arial>Downloaded the latest XP updates and the java stopped
    working(?) When I load a page with j.s. it doesn't run ie menumachine shows
    up in the source code but my computer does not display it. </FONT></DIV>
    <DIV><FONT face=Arial></FONT> </DIV>
    <DIV><FONT face=Arial>IE.>tools>internet options>advanced and Java
    Console enabled and JIT compiler for virtual machine enabled</FONT></DIV>
    <DIV><FONT face=Arial></FONT> </DIV>
    <DIV><FONT face=Arial>Any help would be appreciated.</FONT></DIV>
    <DIV><FONT face=Arial></FONT> </DIV>
    <DIV><FONT face=Arial>Dave</FONT></DIV></BODY></HTML>
- 2
  - measuring signal strength in javahello
    
    i am writing a java program for locating a wireless device within an
    office environment. i want to use the signal strengths of the
    surrounding base stations (access points) to estimate the current
    location of the device.
    does anybody have an idea how to get the strength of a signal sent by
    a base station in java?
    
    thank you,
    dominik
- 3
  - Help! Constructors not workingI'm doing an assignment for a Java class. Basically, we have to build
    constructors for a class, Television, whose attributes are *brand* and
    *price*. I have defined the constructors and accessor and mutator
    methods in Television.java, and access it via TelevisionClient.java
    (code for both is posted below). Both files compile. However when I
    run TelevisionClient, it runs through the code, but my constructors,
    tv0, which I assign a value in the program, and tv1, which is assigned
    through dialog boxes at runtime, are the same value - in other words,
    even assigning a value to one, they both have the values that are
    passed in through the dialog box. I appreciate any help.
    
    ******* Television.java ****************
    
    import java.util.*;
    import javax.swing.JOptionPane;
    import java.io.*;
    
    public class Television
    {
    public static String brand;
    public static String price;
    
    public Television(String xbrand, String xprice)
    {
    brand = xbrand;
    price = xprice;
    }
    
    public static String getBrand()
    {
    return brand;
    }
    
    public static String getPrice()
    {
    return price;
    }
    
    public String toString()
    {
    String str = "";
    str = "Television information:\n"
    + "The brand name is " + this.brand + "\n"
    + "The price is: $" + price;
    return str;
    }
    
    public boolean equals(Television tvx)
    {
    if (brand.equals(tvx.brand)
    && price==(tvx.price))
    return true;
    else
    return false;
    }
    }
    ******* end Television.java ****************
    
    ******* TelevisionClient.java ****************
    
    import javax.swing.JOptionPane;
    
    public class TelevisionClient
    {
    
    public static String inputMessage;
    public static String outputMessage;
    public static String outputMessage2;
    public static String outMsg;
    
    Television tv0, tv1;
    
    public void workWithTV( )
    {
    tv0 = new Television( "RCA", "100.00");
    
    JOptionPane.showMessageDialog( null, tv0.toString( ) );
    
    outputMessage = "This program will list the brand and price of a
    television "
    + "based on the values you enter.\n"
    + "It will then compare the values to the default: RCA - $100.00\n";
    
    JOptionPane.showMessageDialog(null, outputMessage,"Television
    Attributes",
    JOptionPane.PLAIN_MESSAGE);
    
    inputMessage = "Enter the brand of the television:\n\n";
    
    Television.brand = JOptionPane.showInputDialog(inputMessage);
    
    inputMessage = "Enter the price of the television:\n\n";
    
    Television.price = JOptionPane.showInputDialog(inputMessage);
    
    // price = Double.parseDouble(price);
    
    Television tv1 = new Television(Television.brand, Television.price);
    
    outputMessage = tv1.toString();
    JOptionPane.showMessageDialog(null, outputMessage,"Television
    Attributes",
    JOptionPane.PLAIN_MESSAGE);
    
    JOptionPane.showMessageDialog( null, tv0.toString( ) );
    JOptionPane.showMessageDialog( null, tv1.toString( ) );
    
    outMsg = "tv0: " + tv0.brand + "/" + tv0.price + "\n"
    + "tv1: " + tv1.brand + "/" + tv1.price + "\n";
    
    JOptionPane.showMessageDialog(null, outMsg,"Television Attributes",
    JOptionPane.PLAIN_MESSAGE);
    
    if ( tv1.equals( tv0 ) )
    outputMessage2 = "DOES EQUAL";
    else
    outputMessage2 = "DOES NOT EQUAL";
    
    outputMessage = "The values you entered, brand: " +
    Television.getBrand() + " / price: $" + Television.getPrice() + "\n"
    
    JOptionPane.showMessageDialog( null, outputMessage );
    
    if ( tv1 == tv0 )
    outputMessage2 = "DOES EQUAL";
    else
    outputMessage2 = "DOES NOT EQUAL";
    
    outputMessage = "The values you entered, brand: " +
    Television.getBrand() + " / price: $" + Television.getPrice() + "\n"
    
    JOptionPane.showMessageDialog( null, outputMessage );
    }
    
    public static void main (String[] args)
    {
    TelevisionClient app = new TelevisionClient( );
    app.workWithTV( );
    }
    
    }
    ******* end TelevisionClient.java ****************
- 4
  - escape meta for Pattern?On
    http://java.sun.com/j2se/1.4.2/docs/api/java/util/regex/Pattern.html
    
    it says:
    > The string literal "$hello$" is illegal and leads to a compile-time error; in order to match the string (hello) the string literal "\$hello\$" must be used.
    
    Now, if I read my input strings from a file I have to convert my
    strings in order to match them against a pattern. How do I do that?
    Is there a predefined method to do it? Like quotemeta in perl?
    
    Thanks!
    Markus
- 5
  - Program can't count argumentsHi,
    
    I have written a .java file with below source code.
    
    public class getargs {
    public static void main (String [] args) {
    System.out.println(args.length);
    }
    }
    
    Compilation succeeded. But when I ran the program with below
    parameters:
    
    java getargs abc
    or
    java getargs "abc"
    
    the program returned 0 in both cases. If I don't intertpret wrongly,
    args.length should contain the count of program arguments. Why would I
    get the result as I ran this program ?
    
    I run java SDK 1.4.1.
- 6
  - Using Java with Dual & Quad Processors.I have a function which I call using for loop. I want that when My
    Java program is run on Dual Core its speed increases by twice and when
    it run on Quad core its speed increase 4 time.
    
    Here is the Code I am using.
    
    const NUMBER=1000;
    Public int int_x;
    Public int[] Array1= new int[NUMBER];
    
    init (){
    for (int i=0;i<NUMBER;i++){
    
    function_abc(i);
    }
    }
    
    // function_abc returns same value for a given Value of "i".
    
    function_abc(int i){
    int_x++;
    ...
    ...
    ...
    Array1[i]=i*5+int_x;
    }
    
    So in the end we get an Array[i] with the formula values. On a single
    processor it goes through all the for loop in NUMBER times.
    
    I want on Dual Core the Performance doubles by using Threads. So
    function_abc(i); is Called in multiple threads and Speed increases X
    times depending on number of X Processors the System has.
    
    How can it be done, any idea.
    
    So for Single Core it will have no spped increase.
    
    For Dual Core Twice Speed
    
    For Quad Core 4 Times speed is seen.
    
    Bye
    Sanny
- 7
  - New great site for java ebooks => www.java-ebooks.comNew great site for java ebooks => www.java-ebooks.com
- 8
  - Dual JTree interaction
    
    Hi guys
    
    I have 2 jTree controls on a jFrame ,
    
    And when I try to make the second jTree to react on the first jTree clicks ,
    
    What is the correct OOP way to do it ?
- 9
  - UI Painting Problems -Upgrade from JDK1.3-JDK1.4Hi,
    I have some UIs in my application. Today I was upgrading the code from
    JDK1.3.1 to JDK1.4.2 WindowsXP.
    Some How the UI hangs and painting does not happen properly. Does any
    body have any solution
    Any solutions is helpfull....
    
    All compilation went through fine...
    
    When I generate the JVM dump.. I get the following errpr
    
    Full thread dump Java HotSpot(TM) Client VM (1.4.2_03-b02 mixed mode):
    
    "DestroyJavaVM" prio=5 tid=0x000352b8 nid=0x8ac waiting on condition
    [0..7fad8]
    
    "TimerQueue" daemon prio=5 tid=0x03164d28 nid=0xe84 in Object.wait()
    [76cf000..7
    6cfd8c]
    at java.lang.Object.wait(Native Method)
    - waiting on <0x10e54ce8> (a javax.swing.TimerQueue)
    at javax.swing.TimerQueue.run(TimerQueue.java:231)
    - locked <0x10e54ce8> (a javax.swing.TimerQueue)
    at java.lang.Thread.run(Thread.java:534)
    
    "Java2D Disposer" daemon prio=10 tid=0x030c2f10 nid=0x99c in
    Object.wait() [760f
    000..760fd8c]
    at java.lang.Object.wait(Native Method)
    - waiting on <0x10d6d850> (a java.lang.ref.ReferenceQueue$Lock)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
    - locked <0x10d6d850> (a java.lang.ref.ReferenceQueue$Lock)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
    at sun.java2d.Disposer.run(Disposer.java:100)
    at java.lang.Thread.run(Thread.java:534)
    
    "AWT-EventQueue-0" prio=7 tid=0x030bd818 nid=0x95c waiting on
    condition [758e000
    ..758fd8c]
    at sun.java2d.pipe.PixelToShapeConverter.fillRect(PixelToShapeConverter.
    java:44)
    at sun.java2d.pipe.ValidatePipe.fillRect(ValidatePipe.java:46)
    at sun.java2d.SunGraphics2D.fillRect(SunGraphics2D.java:2066)
    at com.kbs.vide.util.gui.DynamicKuberreButton.drawPixel(DynamicKuberreBu
    tton.java:314)
    at com.kbs.vide.util.gui.DynamicKuberreButton.paintBackground(DynamicKub
    erreButton.java:140)
    at com.kbs.vide.util.gui.DynamicKuberreButton.paintButton(DynamicKuberre
    Button.java:250)
    at com.kbs.vide.util.gui.ImageButton.paintComponent(ImageButton.java:229
    )
    at javax.swing.JComponent.paint(JComponent.java:808)
    at javax.swing.JComponent.paintChildren(JComponent.java:647)
    - locked <0x10cb9ab0> (a java.awt.Component$AWTTreeLock)
    at javax.swing.JComponent.paint(JComponent.java:817)
    at javax.swing.JComponent.paintWithOffscreenBuffer(JComponent.java:4787)
    
    at javax.swing.JComponent.paintDoubleBuffered(JComponent.java:4740)
    at javax.swing.JComponent._paintImmediately(JComponent.java:4685)
    at javax.swing.JComponent.paintImmediately(JComponent.java:4488)
    at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:410)
    
    at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(System
    EventQueueUtilities.java:117)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:178)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:454)
    at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchTh
    read.java:201)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
    ad.java:151)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
    ad.java:141)
    at java.awt.Dialog$1.run(Dialog.java:540)
    at java.awt.Dialog.show(Dialog.java:561)
    at java.awt.Component.show(Component.java:1133)
    at java.awt.Component.setVisible(Component.java:1088)
    at com.kbs.vide.util.gui.KuberreDialog.setVisible(KuberreDialog.java:283
    )
    at com.kbs.vide.client.gui.MainAdapter.actionPerformed(MainAdapter.java:
    68)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:17
    86)
    at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Abstra
    ctButton.java:1839)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel
    .java:420)
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258
    )
    at javax.swing.AbstractButton.doClick(AbstractButton.java:289)
    at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1
    113)
    at javax.swing.plaf.basic.BasicMenuItemUI$MouseInputHandler.mouseRelease
    d(BasicMenuItemUI.java:943)
    at java.awt.Component.processMouseEvent(Component.java:5100)
    at java.awt.Component.processEvent(Component.java:4897)
    at java.awt.Container.processEvent(Container.java:1569)
    at java.awt.Component.dispatchEventImpl(Component.java:3615)
    at java.awt.Container.dispatchEventImpl(Container.java:1627)
    at java.awt.Component.dispatchEvent(Component.java:3477)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483
    )
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3198)
    
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3128)
    at java.awt.Container.dispatchEventImpl(Container.java:1613)
    at java.awt.Window.dispatchEventImpl(Window.java:1606)
    at java.awt.Component.dispatchEvent(Component.java:3477)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
    at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchTh
    read.java:201)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
    ad.java:151)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
    
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
    
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)
    
    "AWT-Windows" daemon prio=7 tid=0x030ae538 nid=0x870 runnable
    [754f000..754fd8c]
    
    at sun.awt.windows.WToolkit.eventLoop(Native Method)
    at sun.awt.windows.WToolkit.run(WToolkit.java:262)
    at java.lang.Thread.run(Thread.java:534)
    
    "AWT-Shutdown" prio=5 tid=0x0309a950 nid=0xb44 in Object.wait()
    [750f000..750fd8
    c]
    at java.lang.Object.wait(Native Method)
    - waiting on <0x10cc1dc0> (a java.lang.Object)
    at java.lang.Object.wait(Object.java:429)
    at sun.awt.AWTAutoShutdown.run(AWTAutoShutdown.java:259)
    - locked <0x10cc1dc0> (a java.lang.Object)
    at java.lang.Thread.run(Thread.java:534)
    
    "Signal Dispatcher" daemon prio=10 tid=0x009c29f8 nid=0x314 waiting on
    condition
    [0..0]
    
    "Finalizer" daemon prio=9 tid=0x009c0130 nid=0x7bc in Object.wait()
    [2baf000..2b
    afd8c]
    at java.lang.Object.wait(Native Method)
    - waiting on <0x10cb8cc0> (a java.lang.ref.ReferenceQueue$Lock)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
    - locked <0x10cb8cc0> (a java.lang.ref.ReferenceQueue$Lock)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
    at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)
    
    "Reference Handler" daemon prio=10 tid=0x009bed00 nid=0x284 in
    Object.wait() [2b
    6f000..2b6fd8c]
    at java.lang.Object.wait(Native Method)
    - waiting on <0x10cb8d28> (a java.lang.ref.Reference$Lock)
    at java.lang.Object.wait(Object.java:429)
    at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:115)
    - locked <0x10cb8d28> (a java.lang.ref.Reference$Lock)
    
    "VM Thread" prio=5 tid=0x009fb640 nid=0xf4 runnable
    
    "VM Periodic Task Thread" prio=10 tid=0x0003f9a8 nid=0x4a8 waiting on
    condition
    
    "Suspend Checker Thread" prio=10 tid=0x009c2470 nid=0x2d0 runnable
    
    Thanks
    SubbaRao
- 10
  - [Struts] Init formbean value before Initialisation?Daniel Cloutier wrote:
    > i've got 2 actions, 2 forms and 2 jsps... on jsp1 i receive userinput
    > (e.g. the username) and i want to show it in the form on the next jsp
    > (in a text-component). how can i accomplish this without scriptlets?
    > can i access the second formbean in the action of the first jsp?
    
    Please post some of your code. It's easier to talk about this using real
    names of Action classes and Forms.
    
    I'm guessing Action1 fortwards to JSP1 which has the username field (a
    login form?) When you submit that, it goes back to Action1, which sees
    that the value is present and forwards where?
    
    --
    Wendy in Chandler, AZ
    "BTW, Lucifer just called and he needs a pair of ice skates :-)"
    James Turner on struts-dev, voting to release Struts 1.1 Final
- 11
  - jdk1.4.2p5 build error
    --=-QXgBEaZzAqtsE+sUalvG
    Content-Type: text/plain
    Content-Transfer-Encoding: 7bit
    
    Hi,
    
    I am having a problem building jdk1.4.2p5. I already have jdk-1.3.1p7_2
    installed from my installation of OpenOffice1.03
    Do I have to first remove jdk1.3.1 before I install jdk1.4.2 ?
    I am in the process of upgrading OO1.03 to 1.1, attached is my error
    message.
    
    Any help would be appreciated.
    
    Thanks,
    Nelis
    
    --=-QXgBEaZzAqtsE+sUalvG
    Content-Disposition: attachment; filename=debug_jdk.txt
    Content-Type: text/plain; name=debug_jdk.txt; charset=ISO-8859-1
    Content-Transfer-Encoding: 7bit
    
    # Start of jdk build
    bsd i586 1.4.2-p5 build started: 03-11-12 12:22
    if [ -r ./../../deploy/make/Makefile ]; then \
    ( cd ./../../deploy/make; gmake sanity EXTERNALSANITYCONTROL=true CONTROL_TOPDIR=/usr/ports/java/jdk14/work/control CONTROL_TOPDIR_NAME=control ALT_OUTPUTDIR=/usr/ports/java/jdk14/work/control/build/bsd-i586 ARCH_DATA_MODEL=32 MILESTONE=p5 BUILD_NUMBER=nelis_12_nov_2003_12_22 ; ); \
    fi
    gmake[1]: Entering directory `/usr/ports/java/jdk14/work/deploy/make'
    gmake[1]: Leaving directory `/usr/ports/java/jdk14/work/deploy/make'
    gmake[1]: Entering directory `/usr/ports/java/jdk14/work/j2se/make'
    gmake[1]: Leaving directory `/usr/ports/java/jdk14/work/j2se/make'
    
    Build Machine Information:
    build machine =
    
    Build Directory Structure:
    CWD = /usr/ports/java/jdk14/work/control/make
    TOPDIR = ./../..
    CONTROL_TOPDIR = ./../../control
    GENERICS_TOPDIR = ./../../generics
    HOTSPOT_TOPDIR = ./../../hotspot
    J2SE_TOPDIR = ./../../j2se
    MOTIF_TOPDIR = ./../../motif
    
    Hotspot Settings:
    HOTSPOT_BUILD_JOBS =
    
    Bootstrap Settings:
    JAVAWS_BOOTDIR = /java/re/j2se/1.4.1/archive/fcs/binaries/bsd-i586
    BOOTSTRAP J2SDK VERSION:
    OUTPUTDIR = /usr/ports/java/jdk14/work/control/build/bsd-i586
    
    Build Tool Settings:
    UNIXCOMMAND_PATH = /bin/
    COMPILER_PATH = /usr/bin/
    DEVTOOLS_PATH = /usr/local/bin/
    USRBIN_PATH = /usr/bin/
    GCC32_COMPILER_PATH = /java/devtools/bsd/gcc3.2/
    MOZILLA_PATH =
    MOZILLA_HEADERS_PATH =
    MOZILLA_LIBS_PATH =
    CC_VER = 2.95.4
    PATH = /sbin:/bin:/usr/sbin:/usr/bin:/usr/games:/usr/local/sbin:/usr/local/bin:/usr/X11R6/bin:/root/bin
    
    Build Directives:
    PEDANTIC =
    INSANE =
    
    Build Platform Settings:
    PLATFORM = bsd
    ARCH = i586
    LIBARCH = i386
    ARCH_FAMILY = i586
    ARCH_DATA_MODEL = 32
    OS_VERSION = 4.9-STABLE
    TRUE_PLATFORM = FreeBSD (4.x STABLE way)
    FREE_SPACE = 44495664
    
    GNU Make Settings:
    MAKE = gmake
    MAKE VERSION =
    MAKECMDGOALS = sanity
    MAKEFLAGS = w -- BUILD_NUMBER=nelis_12_nov_2003_12_22 MILESTONE=p5 ARCH_DATA_MODEL=32 ALT_OUTPUTDIR=/usr/ports/java/jdk14/work/control/build/bsd-i586 CONTROL_TOPDIR_NAME=control CONTROL_TOPDIR=/usr/ports/java/jdk14/work/control EXTERNALSANITYCONTROL=true
    SHELL = /bin/sh
    
    Target Build Versions:
    JAVAWS_VERSION = 1.4.2
    MILESTONE = p5
    BUILD_NUMBER = nelis_12_nov_2003_12_22
    
    Bootstrap Settings:
    BOOTDIR = /java/re/j2se/1.4.1/archive/fcs/binaries/bsd-i586
    BOOTSTRAP J2SDK VERSION:
    OUTPUTDIR = /usr/ports/java/jdk14/work/control/build/bsd-i586
    
    Build Tool Settings:
    UNIXCOMMAND_PATH = /bin/
    COMPILER_PATH = /usr/bin/
    DEVTOOLS_PATH = /usr/local/bin/
    USRBIN_PATH = /usr/bin/
    MOTIF_DIR = /usr/X11R6
    CC_VER = 2.95.4
    ZIP_VER = 2.3
    PATH = /sbin:/bin:/usr/sbin:/usr/bin:/usr/games:/usr/local/sbin:/usr/local/bin:/usr/X11R6/bin:/root/bin
    
    Build Directives:
    USE_ONLY_BOOTDIR_TOOLS =
    USE_HOTSPOT_INTERPRETER_MODE =
    PEDANTIC =
    DEV_ONLY = YES
    J2RE_ONLY =
    NO_DOCS =
    NO_IMAGES =
    TOOLS_ONLY = true
    INSANE =
    
    Build Platform Settings:
    PLATFORM = bsd
    ARCH = i586
    LIBARCH = i386
    ARCH_FAMILY = i586
    ARCH_DATA_MODEL = 32
    OS_VERSION = 4.9-STABLE
    TRUE_PLATFORM = FreeBSD (4.x STABLE way)
    FREE_SPACE = 44495648
    
    GNU Make Settings:
    MAKE = gmake
    MAKE VERSION =
    MAKECMDGOALS = sanity
    MAKEFLAGS =
    SHELL = /bin/sh
    
    Target Build Versions:
    JDK_VERSION = 1.4.2
    MILESTONE = p5
    BUILD_NUMBER = nelis_12_nov_2003_12_22
    
    External File/Binary Locations:
    HOTSPOT_SERVER_PATH = /usr/ports/java/jdk14/work/control/build/bsd-i586/hotspot-i586/server
    HOTSPOT_CLIENT_PATH = /usr/ports/java/jdk14/work/control/build/bsd-i586/hotspot-i586/client
    MOTIF_DIR = /usr/X11R6
    CACERTS_FILE = ./../src/share/lib/security/cacerts
    
    WARNING: Your build environment has the variable DEV_ONLY
    defined. This will result in a development-only
    build of the J2SE workspace, lacking the documentation
    build and installation bundles.
    
    ERROR: JAVAWS_BOOTDIR does not point to a valid Java 2 SDK
    Check that you have access to
    /java/re/j2se/1.4.1/archive/fcs/binaries/bsd-i586/bin/java
    and/or check your value of ALT_JAVAWS_BOOTDIR.
    
    ERROR: BOOTDIR does not point to a valid Java 2 SDK
    Check that you have access to
    /java/re/j2se/1.4.1/archive/fcs/binaries/bsd-i586/bin/java
    and/or check your value of ALT_BOOTDIR.
    
    Exiting because of the above error(s).
    
    gmake: *** [post-sanity] Error 1
    *** Error code 2
    
    Stop in /usr/ports/java/jdk14.
    enigma#
    
    --=-QXgBEaZzAqtsE+sUalvG
    Content-Type: text/plain; charset="us-ascii"
    MIME-Version: 1.0
    Content-Transfer-Encoding: 7bit
    Content-Disposition: inline
    
    _______________________________________________
    email***@***.com mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-java
    To unsubscribe, send any mail to "email***@***.com"
    
    --=-QXgBEaZzAqtsE+sUalvG--
- 12
  - GIS application programI am developing a GIS java server and is now trying to write 2 modules
    one is about the algorithm to find the shortest route for a journey
    second one is the billing system used to support the billing service to
    count the number of bytes transferred in each process
    Do anyone have any reference and similar for my reference ..
    Thousands Thanx
- 13
  - Outsourcing to India and Chinayeah there was a philosopher back in the 60s by the name of
    thornkinson (god i hope that's right) but he went into detail on how
    society will eventually solve all its problems through efficient
    technology. he supposed built a vehicle that can do like 50mpg back
    then.
    
    the light bulb is an interesting question tho. its horribly
    inefficient. hasn't changed since edison created it. its used by
    literally everyone. you would think someone would realize the
    potential in mass producing something better..
    
    however i don't think its physically possible to heat a home using 3
    lightbulbs. besides a lightbulb mostly creates heat.
    
    Roedy Green <email***@***.com> wrote in message news:<email***@***.com>...
    > On 8 Jan 2004 09:19:43 -0800, email***@***.com (Loco
    > Pollo) wrote or quoted :
    >
    > >it would take 7 planet earths to support
    > >everyone with this wasteful lifestyle because we are on the whole
    > >inefficient with our resources.
    >
    > The problem is we have some habits left over from our cave man days
    > documented by Thorsten Veblen in the Theory Of The Leisure Class (a
    > very funny book published in 1899).
    > http://www.amazon.com/exec/obidos/ASIN/0140187952/canadianmindprod
    >
    > We like to impress each other with conspicuous consumption and
    > conspicuous waste.
    >
    > Somehow, we must come to equate status with efficient and parsimonious
    > use of resources.
    >
    > I was horrified to learn that the technology to build a house in
    > Canada that can be heated with a single light bulb costs only a few
    > thousand dollars extra, yet almost no one takes advantage of it.
    >
    > Yet the houses built today will NEED that technology to be practical
    > after the age of oil.
    >
    > We are like castaways on a desert island, deciding to have a feast on
    > whatever washed ashore, before we have any plan to live off the land.
- 14
  - Java Threads - Get running threadsHy there,
    
    I'm building an application that creates a thread. This thread creates
    other threads to perform several tasks.
    
    My question is simple. Being this main thread created in a JSP page,
    and still running after the user logs out, how can i get the current
    status of the thread? I would like for the user, when he logs on the
    application, to verify if the thread is active, that is, the current
    status.
    
    I can't seem to be able to get the thread once it is initialized.
    
    Thanks in advance for any help.
    
    Regards
    
    Pedro Pinto
- 15
  - HTTP Persistent connections on Apache web-serverHi,
    
    I need to implement a solution which needs a HTTP persistent connection
    
    from the client( any browser ) to the webserver ( Apache here )
    
    This is how I am trying to acheive the persistent connection:
    
    For every user logging on to the webserver, the browser sends a HTTP
    request to the webserver which is being handled by a servlet on the
    webserver. The servlet then creates a thread which holds the response
    object and waits for some asynchronous data coming from a diff backend
    sever.
    As soon as some data is posted on to this thread, this thread sends
    back the data to the clent on the response object that it has been
    holding as a java-script object.
    This thread is terminated only when the user logs out od the webserver.
    
    Now, I have a few questions on this part:
    
    1) I find that it is not an appropriate solution, given the fact that
    the webserver needs to cater to 20-30k users at a time and creating a
    thread per user on the webserver would really not solve the purpose. Am
    
    I right ? ( The webserver would die is n't it?..)
    
    2) Also, is there any limitation on the time that the thread can hold
    the response object? like if the thread doesn't get any data posted on
    to it from a diff backend sever, will the client( here IE or mozilla )
    close the underlying socket connection ?
    
    3)Any limitation on the scalability of this approach ( I want to know
    to how many users will this approach solve )?
    
    4) Now given my inner feeling that this approach won't work well, what
    is the best way to implement a lonf-lived HTTP persistenet connection
    from my browser to the webserver.
    (Please note that the webserver need to push some asynchronous data to
    the client as long as the user is logged on the webserver ..no refresh
    mechanism please )
    
    Apprecaite if reponded well!!!
    
    Thanks in advance to ALL
    "webdev50"