java-programmer >>JMF video frame size

JMF video frame size

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  - Hibernate305: delete query fails with "must begin with SELECT or FROM"I'm using Hibernate 3.0.5, JDK 1.4.2, and Oracle 9i.
    
    I'm following the Hibernate 3.0.5 docs to build a query to delete rows
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    -----------------
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    int deletedRows = query.executeUpdate();
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    What is wrong with my query?
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    It's basically a scientific calculation program, which has huge loops.
    Now it's very slow to run it in java/JIT.
    
    I'd like to know if there are some existing free program to translate java
    code(or class) to C code(or exe) since rewrite my code in C will take too long.
    
    Has anyone used samilar converter before? Any suggestion is appreciated.
    
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  - Java Native Interface - passing parameter array of different datatypesGreets!
    
    Yesterday I googled for hours to find a tutorial how to call Java
    methods from C++ native code. Unfortunately I didn't find anything
    useful, the Java JNI documentation doesn't capture the functionality
    of the JNI very well.
    
    I want to do the following: I want to call a Java method from C++
    code. The Java method has some parameters of different datatypes, like
    
    public static boolean dosomething(int x, long y, String z)
    
    for example. Is there any way to do this? The Call...Methods() take
    the method ID and an array of parameters to pass to the function, but:
    
    HOW TO CREATE AN ARRAY OF DIFFERENT DATATYPES???
    
    It's only possible to create a new array calling something like
    NewObjectArray() when passing a datatype given.... I think, the only
    way to pass parameters of different datatypes from C++ to Java methods
    is to create a new class containing all parameters necessary and to
    pass the class as the one and only argument.
    
    Any ideas?
    Best Regards
    
    Clemens
    
    [ See http://www.gotw.ca/resources/clcm.htm for info about ]
    [ comp.lang.c++.moderated. First time posters: Do this! ]
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  - Forcing swing gui to be drawnHey, right now I have a program that analyzes an EKG when a button is
    clicked. I want to pop up a progress bar in a new frame to show how far
    it is, but I'm having problems. I can create the frame, and it will
    appear, but it won't draw the progress bar until it is done executing
    all of the other commands.
    
    I ahve tried opening the frame with a separate thread, but it resulted
    in the same problem. I guess there must be some draw queue that is on a
    low priority, but I really have no idea why it isn't working.
    
    Any help would be great... I show this at a science fair in 2 days.
    Thanks!
    
    -Thomas
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  - Java Chat Recording.Hi,
    
    A website I use has a chat room and it's chatter-side interface is a Java
    application. The comments chatters post come thick and fast and, although
    there is a scoll bar, it's no good scrolling down to see comments missed,
    as, as soon as a new comment is posted, all the comments scroll up to it.
    There is no cut-and-paste/recording facility. As it's possible to scroll
    up and down the comments, there must be somewhere where the comments are
    held. Would this be just in some sort of video buffer, a
    constantly-appended file on my PC's disk drive or just in memory? Is there
    any way to record the conversations? Have the output from the Java
    application redirected to a file, etc?
    
    Thanks in advance.
    
    Yours,
    Gary Hayward.
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  - Focusable JPanel how?Hi,
    
    How to make JPanel gain focus and make responsible on key events?
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  - put application on server ??!!!!I have developed a java application that can return shortest path by
    inputting data.
    I would like to integrate this application into web application by putting
    into tomcat server so that client can use the application through the
    internet.
    I am new to web service programming and I just start to learn jsp. I would
    like to ask how I can do such implementation?
    make my application into a bean ? and use the bean?
    Please give me advice and help or references ..
    Thousands thanx
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  - A basic tomcat questionHi gang, Tomcat's not my area of expertise but I have to get some simple
    things set up -- nothing fancy.
    
    I'm having trouble getting classes & packages to work. The setup is Tomcat
    5.5.4 & JDK1.5. I can get basic servlets and JSPs to work, but I'm having
    trouble with user classes and packages. Here's an example:
    
    tomcat\webapps\ROOT\Test\TestMovie.jsp
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    tomcat\webapps\ROOT\Test\WEB-INF\classes\testpackage\Movie.java
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    package testpackage;
    
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    {
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    this.year = year;
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    the classes in packages, create a folder for the package under
    WEB-INF\classes, and put the class files in the package folder, and that
    should do the trick. But I must have something else missing. Any ideas?
    
    Also, I don't know if this is related, but is there a trick to using new
    featured of Java 1.5 in a JSP? I can't get the following JSP to compile:
    
    <%@ page import="java.util.*" %>
    <html>
    <head>
    <title>You're breaking my concentration.</title>
    </head>
    <body>
    <% ArrayList<String> s = new ArrayList<String>();
    %>
    </body>
    </html>
    
    It complains about the first < in the scriptlet. Does that have to be
    escaped somehow?
    
    TIA,
    
    --D
- 11
  - java 6 used in large companies?hi..
    
    we are a large company considering the move from java 1.4 to either 5
    or 6.
    
    at the same we are upgrading to was6 (or maybe jboss 4), we are
    interested to learn if there are any major projects on enterprise
    level involving java 6 (including the use of it's web services
    framework).
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  - Response cache on the application serverIs it a good thing to cache the search result?
    
    The metadata for our system can be as much as 100,000
    I am trying to enable the response cache on the web server.
    
    However, I am thinking about the problem i might meet.
    
    When you cache the search result, is it possible the other
    person throw the same condiiton and see the same result?
    With our system there some security set for each row, so
    if this happens there is a security leak.
    
    MD
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  - URL in IFRAMELet's say I have a struts action at http://xyz.com/someAction.do and this
    URL is referred from one IFRAME via "src" attribute of IFRAME. Is it
    possible for me to detect inside someAction.do which page is embedding it in
    an IFRAME? How can I do this?
    
    et me put question in a different way, if I refer to Google API with this -
    
    code:
    ------------------------------------------------------------------------------
    
    <script
    src="http://maps.google.com/maps?file=api&v=2.x&key=ABQIAAAAHuQre3TX-ZKoHs97iqelnBQn09xNixTqt4LnUZ12n-xJURxIHRRdLvNa4xtUwCJO0gkyTjCSRjfctQ"
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    How does it know that the request is coming from domain xyz.com? It is not
    purely based on the key - if I send same key from another domain, it doesn't
    work! So how can I do that? Which header do I use? The referer header is
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    - manish
- 12
  - Parsing a test fileI'm pretty new to Java and have been assigned to parse a log file.
    The file is tab delimited. I have several tokens that I need to look
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    stored in a db table, so the user can add muliple patterns. That item
    will then be placed in a new file.
    
    A good example would be awesome.
    
    Thanks.
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  - hot java"hot java" sounds so...pornographic? larcenous?
    
    anyhow, suns "hot java browser" is end-of-life, or whatever. I've poked
    around a bit and found jazilla, some sort of "ice" java..
    
    anyone use these, or other browsers written in java?
- 16
  - Bound Threads (Re: Process vs Thread: what are the consequences?)On Tue, 13 Nov 2007 16:04:12 +0000, Kenneth P. Turvey wrote:
    
    > Just based on some experimentation I was doing, this doesn't seem to be
    > true. I'm running Linux with the Sun JVM, and it didn't map each Java
    > thread to a native thread until the Java thread was spending enough time
    > executing. I was actually trying to get this mapping (1 to 1) and found
    > it impossible to guarantee under Linux with the Sun JVM.
    >
    > Under Solaris there is the -XX:UseBoundThreads (or something similar) to
    > get that behavior, but under Linux no such option exists.
    >
    > I will freely admit that my experiment could have been flawed, but it
    > wasn't behaving as if it was using more than a single native thread. I
    > suspect that the article above is out of date.
    
    I hate to followup my own post, but I've been looking at this problem
    again and I'm really just unhappy with how it works. Since this can so
    easily be solved under Solaris, and Lew (I think?) mentioned that this is
    all JVM dependent. I was hoping somebody could point me to a JVM that
    runs under Linux that supports the -XX:UseBoundThreads option or something
    similar. I want a 1:1 mapping between native threads and Java threads and
    I just can't seem to get it.
    
    Does anyone have any idea? (BTW, I checked IBM's JVM).
    
    --
    Kenneth P. Turvey <email***@***.com>
- 16
  - Error passing Element to web serviceI'm upgrading from WebLogic 6.1 to WebLogic 8.1 SP 4.
    
    We used to specify weblogic.soap.http.SoapInitialContextFactory and
    weblogic.soap.encoding.factory to lookup the web service in the client.
    Well, the SoapInitialContextFactory and CodecFactory classes are no
    longer around. So now I've used clientgen to generate the stubs and
    here is my client code:
    
    MyWebService service = new MyWebService_Impl(wsdlurl);
    MyWebServicePort port = service.getMyWebServicePort();
    Element result = port.processIt(theElement);
    
    However, I get the following error calling processIt:
    
    java.rmi.RemoteException: web service invoke failed:
    javax.xml.soap.SOAPException: failed to serialize interface
    org.w3c.dom.Element weblogic.xml.schema.binding.SerializationException:
    Failed to serialize Document due to the following error
    weblogic.xml.stream.XMLStreamException: The local name of an attribute
    cannot be null
    ...
    Caused by: weblogic.xml.schema.binding.SerializationException: Failed
    to serialize Document due to the following error
    weblogic.xml.stream.XMLStreamException: The local name of an attribute
    cannot be null
    at
    weblogic.xml.schema.binding.internal.builtin.DocumentCodec.serialize(DocumentCodec.java:76)
    ...
    
    Here's the schema and xml file:
    
    <?xml version="1.0" encoding="UTF-8"?>
    <schema xmlns="http://www.w3.org/2001/XMLSchema"
    targetNamespace="http://myproject.org/myproject_test.xsd"
    xmlns:myproject_test="http://myproject.org/myproject_test.xsd"
    elementFormDefault="qualified">
    <element name="TEST">
    <complexType>
    <sequence>
    <element ref="TEST_ID"/>
    </sequence>
    </complexType>
    </element>
    </complexType>
    <element name="TEST_ID" type="string"/>
    </schema>
    
    <?xml version="1.0" encoding="UTF-8"?>
    <TEST xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://myproject_test.xsd"
    xsi:schemaLocation="http://myproject.org/myproject_test.xsd"
    file:///N:/myproject/metadata/myproject_test.xsd">
    <TEST_ID>ABCD1234</TEST_ID>
    </TEST>
    
    I've been testing with this bare minimum schema so that I can change
    the namespaces and other things easily. The one and only thing that's
    made a difference is when I take out the namespace stuff from the xml
    file, it does get sent to the server. I.E.:
    
    <?xml version="1.0" encoding="UTF-8"?>
    <TEST>
    <TEST_ID>ABCD1234</TEST_ID>
    </TEST>
    
    However, I can't leave it like that because the server doesn't know
    what to do with it. Also, when the server tries to send the response,
    it gets the same error as above.
    
    weblogic.xml.stream.XMLStreamException: The local name of an attribute
    cannot be null
    at
    weblogic.xml.babel.adapters.DOMAdapter.adaptAttribute(DOMAdapter.java:113)
    at
    weblogic.xml.babel.adapters.DOMAdapter.adaptElement(DOMAdapter.java:147)
    ...
    
    javax.xml.soap.SOAPException: failed to serialize interface
    org.w3c.dom.Element weblogic.xml.schema.binding.SerializationException:
    Failed to serialize Document due to the following error
    weblogic.xml.stream.XMLStreamException: The local name of an attribute
    cannot be null
    
    The web service also returns an Element, but it's a different type from
    a different schema, which I haven't touched. So the server is having
    the same problem as the client.
    
    If I change the web service to receive and return only strings, it
    works fine. But I haven't been able to figure out why it won't work
    for the Element. Does this sound like a problem with my WebLogic
    configuration, the schemas/xml files, the web service, the client? Is
    there a way to tell what attribute it is complaining about?
    
    Thanks,
    Christy

Author

Message

rosmi

Posted: 2003-11-25 7:09:00

Top

java-programmer, JMF video frame size I need to know dimension of the media file played by
javax.media.bean.playerbean.MediaPlayer

I use the code you can see below:

FormatControl formatControl = (FormatControl)
this.mediaPlayer.getControl ("javax.media.control.FormatControl");
VideoFormat videoFormat = (VideoFormat) formatControl.getFormat();
return videoFormat.getSize();

mediaPlayer is known object from another class.

But I get formatControl == null.

It's very very strange, but just one time this code did work.

So I have no idea ... Someone else?

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    moved on to the next BIG THING (dragging along all the developer
    baggage for the ride - most of whom will be c#/vb.net developers in
    india, no doubt).
    
    in the meantime, some interesting news:
    
    it seems sun may not be so stupid after all, and is working very
    closely with open source organizations like apache and red hat to
    spread java.
    
    after apache announced a few weeks ago that it would be creating its
    own open source J2EE app server, red hat announced that it was
    planning on an open source java, with sun's blessing.
    
    http://www.freeroller.net/page/kalimantan/20030822#red_hat_and_sun_to
    
    methinks microsoft is in very big trouble.
- 13
  - TRYING TO CREATE A SIMPLE FORM. HELP HELP HELP!!!!trying to make a simple form, just an empty window with no button.
    
    ive tried this
    
    import javax.swing.*;
    import java.awt.*;
    import java.util.List;
    import java.util.*;
    
    public class Canvas
    {
    
    private static Canvas canvasSingleton;
    
    public static Canvas getCanvas()
    {
    if(canvasSingleton == null) {
    canvasSingleton = new Canvas("BlueJ Shapes Demo", 300, 300,
    Color.white);
    }
    canvasSingleton.setVisible(true);
    return canvasSingleton;
    }
    
    }
    
    but it doesnt work :( any ideas guys?
- 14
  - Returning a reference to an objectHi,
    
    I've created a class to implement a state machine, so it's got a State
    attribute. It has algo got a private java.util.Stack attribute.
    
    In order to work, State classes need to access the stack to push and pop
    data, etc.
    To access it from State, I have wrote a method called getStack() which
    returns a reference to the stack, but I think this is not recommended
    beacause all objects sharing the reference can modify it, and led to errors
    difficult to debug, etc. Returning a stack's clone is not valid solution,
    as I have to make changes on the real one.
    
    So my question is, is there a cleaner way to do this?
    
    Thank you very much
    
    --
    
    PGR
- 15
  - [POLL] Dropping support for old SpiderMonkeysHi,
    
    as JavaScript.pm development is moving again I'm considering dropping
    support for older SpideyMonkey and focusing on 1.7 and later (the one
    used in FF 2.0).
    
    Instead on having to download and install SM manually I was planning
    on putting up a source release of the SM 1.7 engine on my server and
    add the possibility for Makefile.PL to download and install it.
    Alternatively I can bundle the source with JavaScript.pm. You will
    still however have the possibility to build against your own SM src.
    This way we can better control availability of utf8, threading and
    e4x (and future stuff too).
    
    Does this sound like a good idea?
    
    Thanks
    /Claes