java-programmer >>Hi I have one web application and i want to get the number of users who are currently accessing the application. Also I want to get the user details of each user, which is stored in a database. How can I do this? Pls help. Getting No: and

Hi I have one web application and i want to get the number of users who are currently accessing the application. Also I want to get the user details of each user, which is stored in a database. How can I do this? Pls help. Getting No: and

Index ‹ java-programmer

Previous
- 1
  - multi track audio card accessinghallo
    
    I am programming in java for multi track sound card ( 4 - stereo track
    -- 8 speakers). I need to output 8 mono wav audio file in eight
    different speakers
    for this work I have suceeded by playing two mono files in first 2
    speakers ( first stereo track ) I am now searching to output other
    6 mono files in other 3 different stereo tracks
    
    how to get the port or details for the other 3 stereo tracks
    
    I have attached 3 java files which i have used
    
    <<<<MultiAudioStreamPlayer.java
    <<<<BaseAudioStream.java
    <<<<SimpleAudioStream.java
    
    for running the below java samples there is no need to have a special
    sound card but make sure to change the WAV file name in
    SimpleAudioStream.java
    program
    
    I am eagerly waiting for your valuable ideas
    
    Yours friendly
    vijay
    
    /*
    * MultiAudioStreamPlayer.java
    *
    * This file is part of the Java Sound Examples.
    */
    
    /*
    * Copyright (c) 1999 by Matthias Pfisterer
    <email***@***.com>
    *
    *
    * This program is free software; you can redistribute it and/or
    modify
    * it under the terms of the GNU General Public License as published
    * by the Free Software Foundation; either version 2 of the License,
    or
    * (at your option) any later version.
    *
    * This program is distributed in the hope that it will be useful,
    * but WITHOUT ANY WARRANTY; without even the implied warranty of
    * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    * GNU General Public License for more details.
    *
    * You should have received a copy of the GNU General Public
    * License along with this program; if not, write to the Free
    Software
    * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    *
    */
    
    import java.io.File;
    
    import java.io.IOException;
    
    import javax.sound.sampled.AudioFormat;
    import javax.sound.sampled.AudioInputStream;
    import javax.sound.sampled.AudioSystem;
    import javax.sound.sampled.DataLine;
    import javax.sound.sampled.LineUnavailableException;
    import javax.sound.sampled.UnsupportedAudioFileException;
    import javax.sound.sampled.SourceDataLine;
    
    // import AudioStream;
    
    /* +DocBookXML
    <title>Playing multiple audio files concurrently</title>
    
    <formalpara><title>Purpose</title>
    <para>This program plays multiple audio files
    concurrently.
    It opens each file given on the command line and starts it.
    The program uses the class <classname>AudioStream</classname>.</para>
    </formalpara>
    
    <formalpara><title>Level</title>
    <para>experienced</para></formalpara>
    
    <formalpara><title>Usage</title>
    <para>
    <cmdsynopsis>
    <command>java MultiAudioStreamPlayer</command>
    <arg choice="plain"
    rep="repeat"><replaceable>audiofile</replaceable></arg>
    </cmdsynopsis>
    </para></formalpara>
    
    <formalpara><title>Parameters</title>
    <variablelist>
    <varlistentry>
    <term><replaceable>audiofile</replaceable></term>
    <listitem><para>the name(s) of the audio file(s) to
    play</para></listitem>
    </varlistentry>
    </variablelist>
    </formalpara>
    
    <formalpara><title>Bugs, limitations</title>
    <para>Not well-tested</para></formalpara>
    
    <formalpara><title>Source code</title>
    <para>
    <ulink url="MultiAudioStreamPlayer.java.html">MultiAudioStreamPlayer.java</ulink>,
    <ulink url="SimpleAudioStream.java.html">SimpleAudioStream.java</ulink>,
    <ulink url="BaseAudioStream.java.html">BaseAudioStream.java</ulink>
    </para>
    </formalpara>
    
    -DocBookXML
    */
    public class MultiAudioStreamPlayer
    {
    public static void main(String[] args)
    {
    
    File soundFile_L = new File("77.wav");
    File soundFile_R = new File("88.wav");
    
    SimpleAudioStream audioStream_L = null;
    SimpleAudioStream audioStream_R = null;
    
    try
    {
    
    audioStream_L = new SimpleAudioStream(soundFile_L);
    audioStream_R = new SimpleAudioStream(soundFile_R);
    
    audioStream_L.setPan(1.0f);
    
    audioStream_R.setPan(0.0f);
    
    audioStream_R.start();
    audioStream_L.start();
    
    }
    catch (LineUnavailableException e)
    {
    /*
    * In case of an exception, we dump the
    * exception including the stack trace
    * to the console output. Then, we exit
    * the program.
    */
    e.printStackTrace();
    System.exit(1);
    }
    catch (UnsupportedAudioFileException e)
    {
    e.printStackTrace();
    System.exit(1);
    }
    catch (IllegalArgumentException e)
    {
    e.printStackTrace();
    System.exit(1);
    }
    catch (IOException e)
    {
    e.printStackTrace();
    System.exit(1);
    }
    
    /*
    
    if (args.length < 1)
    {
    System.out.println("MultiAudioStreamPlayer: usage:");
    System.out.println("\tjava MultiAudioStreamPlayer <soundfile1>
    <soundfile2> ...");
    System.exit(1);
    }
    
    for (int i = 0; i < args.length; i++)
    {
    String strFilename = args[i];
    File soundFile = new File(strFilename);
    
    SimpleAudioStream audioStream = null;
    try
    {
    audioStream = new SimpleAudioStream(soundFile);
    if(i==0)
    audioStream.setPan(1.0f);
    else
    audioStream.setPan(0.0f);
    }
    catch (LineUnavailableException e)
    {
    e.printStackTrace();
    System.exit(1);
    }
    catch (UnsupportedAudioFileException e)
    {
    e.printStackTrace();
    System.exit(1);
    }
    catch (IllegalArgumentException e)
    {
    e.printStackTrace();
    System.exit(1);
    }
    catch (IOException e)
    {
    e.printStackTrace();
    System.exit(1);
    }
    audioStream.start();
    }
    
    */
    
    /* closing the sound file after playing */
    
    }
    
    }
    
    /*** MultiAudioStreamPlayer.java ***/
    
    //_________________________________________________________________________________________________
    
    /*
    * BaseAudioStream.java
    *
    * This file is part of the Java Sound Examples.
    */
    
    /*
    * Copyright (c) 1999, 2000 by Matthias Pfisterer
    <email***@***.com>
    *
    *
    * This program is free software; you can redistribute it and/or
    modify
    * it under the terms of the GNU Library General Public License as
    published
    * by the Free Software Foundation; either version 2 of the License,
    or
    * (at your option) any later version.
    *
    * This program is distributed in the hope that it will be useful,
    * but WITHOUT ANY WARRANTY; without even the implied warranty of
    * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    * GNU Library General Public License for more details.
    *
    * You should have received a copy of the GNU Library General Public
    * License along with this program; if not, write to the Free
    Software
    * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    *
    */
    
    import java.beans.PropertyChangeListener;
    import java.beans.PropertyChangeSupport;
    
    import java.io.File;
    import java.io.IOException;
    
    import java.net.URL;
    
    import javax.sound.sampled.AudioFormat;
    import javax.sound.sampled.AudioInputStream;
    import javax.sound.sampled.AudioSystem;
    import javax.sound.sampled.DataLine;
    import javax.sound.sampled.LineUnavailableException;
    import javax.sound.sampled.SourceDataLine;
    import javax.sound.sampled.UnsupportedAudioFileException;
    import javax.sound.sampled.FloatControl;
    
    public class BaseAudioStream
    implements Runnable
    {
    /** Flag for debugging messages.
    * If true, some messages are dumped to the console
    * during operation.
    */
    private static boolean DEBUG = true;
    
    /**
    * means that the stream has reached EOF or was not started.
    * This value is returned in property change callbacks that
    * report the current media position.
    */
    public static final long MEDIA_POSITION_EOF = -1L;
    public static final String MEDIA_POSITION_PROPERTY =
    "BaseAudioStream_media_position";
    
    // TODO: better size
    private static final int EXTERNAL_BUFFER_SIZE = 4000 * 4;
    
    private Thread m_thread = null;
    private Object m_dataSource;
    private AudioInputStream m_audioInputStream;
    private SourceDataLine m_line;
    private FloatControl m_gainControl;
    private FloatControl m_panControl;
    
    /**
    * This variable is used to distinguish stopped state from
    * paused state. In case of paused state, m_bRunning is still
    * true. In case of stopped state, it is set to false. Doing so
    * will terminate the thread.
    */
    private boolean m_bRunning;
    
    protected BaseAudioStream()
    {
    m_dataSource = null;
    m_audioInputStream = null;
    m_line = null;
    m_gainControl = null;
    m_panControl = null;
    }
    
    protected void setDataSource(File file)
    throws UnsupportedAudioFileException, LineUnavailableException,
    IOException
    {
    m_dataSource = file;
    initAudioInputStream();
    }
    
    protected void setDataSource(URL url)
    throws UnsupportedAudioFileException, LineUnavailableException,
    IOException
    {
    m_dataSource = url;
    initAudioInputStream();
    }
    
    private void initAudioInputStream()
    throws UnsupportedAudioFileException, LineUnavailableException,
    IOException
    {
    if (m_dataSource instanceof URL)
    {
    initAudioInputStream((URL) m_dataSource);
    }
    else if (m_dataSource instanceof File)
    {
    initAudioInputStream((File) m_dataSource);
    }
    }
    
    private void initAudioInputStream(File file)
    throws UnsupportedAudioFileException, IOException
    {
    /*
    try
    {
    */
    m_audioInputStream = AudioSystem.getAudioInputStream(file);
    /*
    }
    catch (IOException e)
    {
    throw new IllegalArgumentException("cannot create AudioInputStream
    for " + file);
    }
    if (m_audioInputStream == null)
    {
    throw new IllegalArgumentException("cannot create AudioInputStream
    for " + file);
    }
    */
    }
    
    private void initAudioInputStream(URL url)
    throws UnsupportedAudioFileException, IOException
    {
    /*
    try
    {
    */
    m_audioInputStream = AudioSystem.getAudioInputStream(url);
    /*
    }
    catch (IOException e)
    {
    throw new IllegalArgumentException("cannot create AudioInputStream
    for " + url);
    }
    if (m_audioInputStream == null)
    {
    throw new IllegalArgumentException("cannot create AudioInputStream
    for " + url);
    }
    */
    }
    
    // from AudioPlayer.java
    /*
    * Compressed audio data cannot be fed directely to
    * Java Sound. It has to be converted explicitely.
    * To do this, we create a new AudioFormat that
    * says to which format we want to convert to. Then,
    * we try to get a converted AudioInputStream.
    * Furthermore, we use the new format and the converted
    * stream.
    *
    * Note that the technique shown here is partly non-
    * portable. It is used here to keep the example
    * simple. A more advanced, more portable technique
    * will (hopefully) show up in BaseAudioStream.java soon.
    *
    * Thanks to Christoph Hecker for finding out that this
    * was missing.
    */
    /*
    if ((audioFormat.getEncoding() == AudioFormat.Encoding.ULAW) ||
    (audioFormat.getEncoding() == AudioFormat.Encoding.ALAW))
    {
    if (DEBUG)
    {
    System.out.println("AudioPlayer.main(): converting");
    }
    AudioFormat newFormat = new AudioFormat(
    AudioFormat.Encoding.PCM_SIGNED,
    audioFormat.getSampleRate(),
    audioFormat.getSampleSizeInBits() * 2,
    audioFormat.getChannels(),
    audioFormat.getFrameSize() * 2,
    audioFormat.getFrameRate(),
    true);
    AudioInputStream newStream =
    AudioSystem.getAudioInputStream(newFormat, audioInputStream);
    audioFormat = newFormat;
    audioInputStream = newStream;
    }
    */
    
    protected void initLine()
    throws LineUnavailableException
    {
    if (m_line == null)
    {
    createLine();
    openLine();
    }
    else
    {
    AudioFormat lineAudioFormat = m_line.getFormat();
    AudioFormat audioInputStreamFormat = m_audioInputStream == null ?
    null : m_audioInputStream.getFormat();
    if (!lineAudioFormat.equals(audioInputStreamFormat))
    {
    m_line.close();
    openLine();
    }
    }
    }
    
    private void createLine()
    throws LineUnavailableException
    {
    if (m_line != null)
    {
    return;
    }
    /*
    * From the AudioInputStream, i.e. from the sound file, we
    * fetch information about the format of the audio data. These
    * information include the sampling frequency, the number of
    * channels and the size of the samples. There information
    * are needed to ask Java Sound for a suitable output line
    * for this audio file.
    */
    AudioFormat audioFormat = m_audioInputStream.getFormat();
    if (DEBUG)
    {
    System.out.println("BaseAudioStream.initLine(): audio format: " +
    audioFormat);
    }
    
    /*
    * Asking for a line is a rather tricky thing.
    * ...
    * Furthermore, we have to give Java Sound a hint about how
    * big the internal buffer for the line should be. Here,
    * we say AudioSystem.NOT_SPECIFIED, signaling that we don't
    * care about the exact size. Java Sound will use some default
    * value for the buffer size.
    */
    DataLine.Info info = new DataLine.Info(SourceDataLine.class,
    audioFormat, AudioSystem.NOT_SPECIFIED);
    m_line = (SourceDataLine) AudioSystem.getLine(info);
    
    if (m_line.isControlSupported(FloatControl.Type.MASTER_GAIN/*VOLUME*/))
    {
    m_gainControl = (FloatControl)
    m_line.getControl(FloatControl.Type.MASTER_GAIN);
    if (DEBUG)
    {
    System.out.println("max gain: " + m_gainControl.getMaximum());
    System.out.println("min gain: " + m_gainControl.getMinimum());
    System.out.println("gain precision: " +
    m_gainControl.getPrecision());
    }
    }
    else
    {
    if (DEBUG)
    {
    System.out.println("FloatControl.Type.MASTER_GAIN is not
    supported");
    }
    }
    if (m_line.isControlSupported(FloatControl.Type.PAN/*BALANCE*/))
    {
    m_panControl = (FloatControl)
    m_line.getControl(FloatControl.Type.PAN);
    if (DEBUG)
    {
    System.out.println("max balance: " + m_panControl.getMaximum());
    System.out.println("min balance: " + m_panControl.getMinimum());
    System.out.println("balance precision: " +
    m_panControl.getPrecision());
    }
    }
    else
    {
    if (DEBUG)
    {
    System.out.println("FloatControl.Type.PAN is not supported");
    }
    }
    }
    
    private void openLine()
    throws LineUnavailableException
    {
    if (m_line == null)
    {
    return;
    }
    AudioFormat audioFormat = m_audioInputStream.getFormat();
    m_line.open(audioFormat, m_line.getBufferSize());
    }
    
    // TODO: if class can be instatiated without file or url,
    m_audioInputStream may
    // be null
    protected AudioFormat getFormat()
    {
    return m_audioInputStream.getFormat();
    }
    
    public void start()
    {
    if (DEBUG)
    {
    System.out.println("start() called");
    }
    if (!(m_thread == null || !m_thread.isAlive()))
    {
    if (DEBUG)
    {
    System.out.println("WARNING: old thread still running!!");
    }
    }
    if (DEBUG)
    {
    System.out.println("creating new thread");
    }
    m_thread = new Thread(this);
    m_thread.start();
    if (DEBUG)
    {
    System.out.println("additional thread started");
    }
    if (DEBUG)
    {
    System.out.println("starting line");
    }
    m_line.start();
    }
    
    protected void stop()
    {
    if (m_bRunning)
    {
    if (m_line != null)
    {
    m_line.stop();
    m_line.flush();
    }
    m_bRunning = false;
    /*
    * We re-initialize the AudioInputStream. Since doing
    * a stop on the stream implies that there has been
    * a successful creation of an AudioInputStream before,
    * we can almost safely ignore this exception.
    * The LineUnavailableException can be ignored because
    * in case of reinitializing the same AudioInputStream,
    * no new line is created or opened.
    */
    try
    {
    initAudioInputStream();
    }
    catch (UnsupportedAudioFileException e)
    {
    }
    catch (LineUnavailableException e)
    {
    }
    catch (IOException e)
    {
    }
    }
    }
    
    public void pause()
    {
    m_line.stop();
    }
    
    public void resume()
    {
    m_line.start();
    }
    
    public void run()
    {
    if (DEBUG)
    {
    System.out.println("thread start");
    }
    int nBytesRead = 0;
    m_bRunning = true;
    byte[] abData = new byte[EXTERNAL_BUFFER_SIZE];
    // int nFrameSize = m_line.getFormat().getFrameSize();
    while (nBytesRead != -1 && m_bRunning)
    {
    try
    {
    nBytesRead = m_audioInputStream.read(abData, 0, abData.length);
    }
    catch (IOException e)
    {
    e.printStackTrace();
    }
    if (nBytesRead >= 0)
    {
    //int nFramesToWrite = nBytesRead / nFrameSize;
    if (DEBUG)
    {
    System.out.println("Trying to write: " + nBytesRead);
    }
    int nBytesWritten = m_line.write(abData, 0, nBytesRead);
    if (DEBUG)
    {
    System.out.println("Written: " + nBytesWritten);
    }
    }
    }
    
    /*
    * Wait until all data are played.
    * This is only necessary because of the bug noted below.
    * (If we do not wait, we would interrupt the playback by
    * prematurely closing the line and exiting the VM.)
    */
    // TODO: check how this interferes with stop()
    m_line.drain();
    if (DEBUG)
    {
    System.out.println("after drain()");
    }
    
    /*
    * Stop the line and reinitialize the AudioInputStream.
    * This should be done before reporting end-of-media to be
    * prepared if the EOM message triggers a new start().
    */
    stop();
    
    if (DEBUG)
    {
    System.out.println("after this.stop()");
    
    }
    
    }
    
    public boolean hasGainControl()
    {
    return m_gainControl != null;
    }
    
    /*
    public void setMute(boolean bMute)
    {
    if (hasGainControl())
    {
    m_gainControl.setMute(bMute);
    }
    }
    
    public boolean getMute()
    {
    if (hasGainControl())
    {
    return m_gainControl.getMute();
    }
    else
    {
    return false;
    }
    }
    */
    
    public void setGain(float fGain)
    {
    if (hasGainControl())
    {
    m_gainControl.setValue(fGain);
    }
    }
    
    public float getGain()
    {
    if (hasGainControl())
    {
    return m_gainControl.getValue();
    }
    else
    {
    return 0.0F;
    }
    }
    
    public float getMaximum()
    {
    if (hasGainControl())
    {
    return m_gainControl.getMaximum();
    }
    else
    {
    return 0.0F;
    }
    }
    
    public float getMinimum()
    {
    if (hasGainControl())
    {
    return m_gainControl.getMinimum();
    }
    else
    {
    return 0.0F;
    }
    }
    
    public boolean hasPanControl()
    {
    return m_panControl != null;
    }
    
    public float getPrecision()
    {
    if (hasPanControl())
    {
    return m_panControl.getPrecision();
    }
    else
    {
    return 0.0F;
    }
    }
    
    public float getPan()
    {
    if (hasPanControl())
    {
    return m_panControl.getValue();
    }
    else
    {
    return 0.0F;
    }
    }
    
    public void setPan(float fPan)
    {
    if (hasPanControl())
    {
    m_panControl.setValue(fPan);
    }
    }
    
    }
    
    /*** BaseAudioStream.java ***/
    
    //----------------------------------------------------------------------------------------
    
    /*
    * SimpleAudioStream.java
    *
    * This file is part of the Java Sound Examples.
    */
    
    /*
    * Copyright (c) 1999, 2000 by Matthias Pfisterer
    <email***@***.com>
    *
    *
    * This program is free software; you can redistribute it and/or
    modify
    * it under the terms of the GNU Library General Public License as
    published
    * by the Free Software Foundation; either version 2 of the License,
    or
    * (at your option) any later version.
    *
    * This program is distributed in the hope that it will be useful,
    * but WITHOUT ANY WARRANTY; without even the implied warranty of
    * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    * GNU Library General Public License for more details.
    *
    * You should have received a copy of the GNU Library General Public
    * License along with this program; if not, write to the Free
    Software
    * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    *
    */
    
    import java.beans.PropertyChangeListener;
    import java.beans.PropertyChangeSupport;
    
    import java.io.File;
    import java.io.IOException;
    
    import java.net.URL;
    
    import javax.sound.sampled.AudioFormat;
    import javax.sound.sampled.AudioInputStream;
    import javax.sound.sampled.AudioSystem;
    import javax.sound.sampled.DataLine;
    import javax.sound.sampled.LineUnavailableException;
    import javax.sound.sampled.SourceDataLine;
    import javax.sound.sampled.UnsupportedAudioFileException;
    import javax.sound.sampled.FloatControl;
    
    public class SimpleAudioStream
    extends BaseAudioStream
    {
    /** Flag for debugging messages.
    * If true, some messages are dumped to the console
    * during operation.
    */
    private static boolean DEBUG = true;
    
    // private static final int EXTERNAL_BUFFER_SIZE = 16384;
    
    /**
    * This variable is used to distinguish stopped state from
    * paused state. In case of paused state, m_bRunning is still
    * true. In case of stopped state, it is set to false. Doing so
    * will terminate the thread.
    */
    private boolean m_bRunning;
    
    public SimpleAudioStream()
    {
    super();
    // m_dataSource = null;
    }
    
    public SimpleAudioStream(File file)
    throws UnsupportedAudioFileException, LineUnavailableException,
    IOException
    {
    this();
    setDataSource(file);
    initLine();
    }
    
    public SimpleAudioStream(URL url)
    throws UnsupportedAudioFileException, LineUnavailableException,
    IOException
    {
    this();
    setDataSource(url);
    initLine();
    }
    
    public AudioFormat getFormat()
    {
    // TODO: have to check that AudioInputStream (or Line?) is
    initialized
    return super.getFormat();
    }
    
    /*
    public void start()
    {
    if (DEBUG)
    {
    System.out.println("start() called");
    }
    m_thread = new Thread(this);
    m_thread.start();
    if (DEBUG)
    {
    System.out.println("additional thread started");
    }
    m_line.start();
    if (DEBUG)
    {
    System.out.println("started line");
    }
    }
    
    public void stop()
    {
    m_line.stop();
    m_line.flush();
    m_bRunning = false;
    }
    
    public void pause()
    {
    m_line.stop();
    }
    
    public void resume()
    {
    m_line.start();
    }
    */
    
    /*
    public void run()
    {
    if (DEBUG)
    {
    System.out.println("thread start");
    }
    int nBytesRead = 0;
    m_bRunning = true;
    byte[] abData = new byte[EXTERNAL_BUFFER_SIZE];
    int nFrameSize = m_line.getFormat().getFrameSize();
    while (nBytesRead != -1 && m_bRunning)
    {
    try
    {
    nBytesRead = m_audioInputStream.read(abData, 0, abData.length);
    }
    catch (IOException e)
    {
    e.printStackTrace();
    }
    if (nBytesRead >= 0)
    {
    int nRemainingBytes = nBytesRead;
    // while (nRemainingBytes > 0)
    //{
    if (DEBUG)
    {
    System.out.println("Line status (active): " +
    m_line.isActive());
    System.out.println("Line status (running): " +
    m_line.isRunning());
    System.out.println("Trying to write (bytes): " + nBytesRead);
    }
    int nBytesWritten = m_line.write(abData, 0, nBytesRead);
    if (DEBUG)
    {
    System.out.println("Written (bytes): " + nBytesWritten);
    }
    nRemainingBytes -= nBytesWritten;
    //}
    }
    }
    if (DEBUG)
    {
    System.out.println("after main loop");
    }
    }
    */
    
    }
    
    /*** SimpleAudioStream.java ***/
- 1
  - Executable binaryHello java experts:
    
    Is there any tool to make java file into executable binary? thanks in
    advance
- 1
  - When 56K was widebandHere is a movie made in the early days of Arpanet about the coming
    networking technology.
    
    http://www.vortex.com/bv/arpanet-72.wmv
    
    It is fun to look back to see how much has changed, and by
    extrapolation imagine what is to come.
    --
    Canadian Mind Products, Roedy Green.
    http://mindprod.com Java custom programming, consulting and coaching.
- 1
  - PreferencesHello!
    
    I've just read about Preferences in JDK1.4 and wonder where java store data
    between sessions???? I've found no related files with suitable contant..
    Sorry for lammer question ;(
- 1
  - log4j questionIs log4j specifically a servlet, or is it an API that can be called from
    ANY java program that wanst to do logging?
- 1
  - Style Sheet inside GUIIs there any open source out there that will allow me to use Style
    Sheets inside of a GUI window, preferably a JEditorPane? I need to be
    able to open Style Sheet formatted html that is inputted into a
    database through an ASP client, and then retrieved in a JAVA client.
- 2
  - Help - Any browser crashes with Java plug in when using parametersWhen ever I try to load java applet I, the plug in works fine unless I
    specify any runtime parameters. Then as soon as I try to start up an
    applet the browser will shut down right away with no warning or error
    messages.
    
    I've tried both 1.3.1_13 and 1.4.2_06 with both Internet Explorer 6 and
    Firefox.
    
    I thought maybe it was a Windows patch or something but can't find any
    info on that. This happens both on a Windows 2000 and XP SP1 machine.
- 2
  - does IntelliJ do any of these thingsI am taking IntelliJ out for its first spin. See
    http://mindprod.com/jgloss/intellij.html
    
    You can see my first program at:
    http://mindprod.com/jgloss/arraylist.html#GROWINGARRAYLIST
    
    Everything is going smoothly. I wondered if the following features
    exist somewhere and I just can't find them.
    
    1. Reorder methods and declarations in canonical order. I make heavy
    use of this in Eclipse to save finding the right spot to insert. I put
    methods and declarations I am working temporarily adjacent then
    reorder.
    
    2. tidy javadoc.
    
    3. summarise syntax errors, like the Eclipse "problems" panel.
    
    4. quickly ensure Javadoc are complete. I have found the lint which
    requires opening a zillion tree elements to find nit picks rather than
    true errors.
    
    --
    Canadian Mind Products, Roedy Green.
    http://mindprod.com Java custom programming, consulting and coaching.
- 2
  - EARN MONEY HERE FROM THE REAL ONLINEMONEY MAKING PROGRAMME.THE BESTEARN MONEY HERE FROM THE REAL ONLINEMONEY MAKING PROGRAMME.THE BEST
    ONLINE PROGRAMME EVER. IT IS FREE.YUU CAN MADE $2,00,000 IN A SINGLE
    DAY.IT ALL DEPEND ON YOUR EFFORT.THE LINK IS BELOW
    
    http://jeeva235.blogspot.com/
    
    MAKE USE THE FREE AMAZING MONEY MAKING PROGRAMMES
- 3
  - Java execute error in LinuxOn Sun, 23 Oct 2005 16:57:56 +0000, Peter Jones wrote:
    
    > Hello all,
    > I'm having a problem resolving an error that I keep getting when
    > I try to execute a peice of java code. Im using Debian 3.1r0a.
    >
    > Here's the lo-down. The code is wrtten and complete, no syntax errors at
    > all. In fact, it compiles fine. The problem is when I try to execute the
    > code. The screenshot says it all. There is no code behind the terminal
    > box (where the errors are being displayed). The code you see there is
    > really as simple as it looks. Any ideas? I'm open to any suggestions.
    > I'm running SableVM, but that hasn't helped.
    
    Two things to remember:
    
    1) Do not post binary articles to a non-binary group. Hint, this is a
    non-binary group.
    
    2) Post your questions into the appropriate newsgroup. For beginners
    questions, this would be comp.lang.java.help
    
    --
    You can't run away forever,
    But there's nothing wrong with getting a good head start.
    --- Jim Steinman, "Rock and Roll Dreams Come Through"
- 4
  - Can't detect double-click mouse events in MustangThe following relates to Mustang b89 on Windows Server 2003. It may well
    relate to earlier Java versions as well but I haven't tested it.
    
    I think my understanding of mouse clicked events is wrong because I don't
    get the behaviour I expect. When I implement the following code:
    
    table.getTableHeader().addMouseListener(new MouseAdapter()
    {
    public void mouseClicked(MouseEvent event)
    {
    System.out.println("Mouse event, clickCount = " +
    event.getClickCount());
    }
    }
    
    I get the following output for every double-click:
    
    Mouse event, clickCount = 1
    Mouse event, clickCount = 2
    
    Shouldn't it be just one event with a clickCount of 2? How can I tell the
    difference between the first event and a normal single-click?
    
    Thanks,
    
    Wes
- 4
  - www.rakeback.gr
    
    This week opportunity
    
    FREE $50
    
    If you're new to SunPoker, we'll match your first deposit up to $50 with
    a 100% deposit bonus. See details at:
    
    www.rakeback.gr
    
    If you are interesting about how to play and how to win, please
    contact us on e-mail: email***@***.com and we will send you book with
    tip and tricks.
    
    Sincerely yours
    www.rakeback.gr
- 7
  - corba-J2EE-EJB-WebSphere?Some help for a newbee?
    
    I've been a c/C++ programmer in VMS, OS/400, and most recently, Windows
    and Dot Net. However, I have recently signed on as Q/A manager at a
    predominantly Java shop. We have some consultants coming in to assess our
    scaleability and architecture, and I'd like to be in a position to at least
    make some intelligable noises. I have gotten the sense that there is at
    least some compatability between these, but I'm not picking up the extent,
    if any, to which any are essentially competing technologies. Is some subset
    of these an obvious choice for a medium volume site with lots of active
    content, with scaleability, performance, and maintainability being our top
    three criteria? Thanks.
    
    Joe
    email***@***.com
    (please remove "nospam." to reply)
- 10
  - Second URL.openstream in second thread causes ProtocolExceptionI have a multi-threaded Java http image proxy service application that
    runs fine on Windows 2000. The app retrieves multiple, distinct images
    from a webserver with one image retrieval process per thread. The
    webserver images change every so often, but each distinct URL used in
    my proxy service remains the same. Each thread repeats its image
    download every few seconds to retrieve updated images. It all works
    great.
    
    I am trying to move this app to a Red Hat Fedora core 4 machine.
    Almost everything works except I am getting a protocol exception when
    I try to open a second URL stream in a second thread. Within seconds,
    one of the threads will throw a ProtocolException error with error
    text of '1.1/ 200 OK'. Any one stream/thread combo will work fine.
    Trying to start another causes problems.
    
    If I comment out the URL.openStream() call, I can start a dozen
    threads, run them for as long as I want and stop them all quite
    nicely. Again, all of the code works beautifully on Windows 2000. I'm
    not sure if this is a Java problem or, perhaps, a Linux server
    configuration problem.
    
    It just seems that the Red Hat server/Java environment is having a
    hard time having two http protocol discussions in two threads at the
    same time. Occasionally, the threads will both succeed for a few
    image revolutions, so there is a little inconsistency in when the
    failure occurs.
    
    gdhurst
- 16
  - MI5 Persecution: ?0,000 Reward (3097)
    20,000 Reward Offered to Expose the Conspiracy
    
    I am making a pledge for information directly leading to the exposing of the "BBC Newscaster
    Conspiracy". The exposing would specifically need to lead to a legally binding admission from Martyn Lewis
    or Michael Buerk of the BBC they they were watching me through the TV set.
    
    I would be happy (delighted, in fact) to pay GBP 20,000 sterling in reward for the above admission.
    --------------------------------------------------------------------------------
    
    3097
    
    --
    Posted via a free Usenet account from http://www.teranews.com

Author

Message

maryanu

Posted: 2005-4-27 19:54:00

Top

java-programmer, Hi I have one web application and i want to get the number of users who are currently accessing the application. Also I want to get the user details of each user, which is stored in a database. How can I do this? Pls help. Getting No: and Hi

I have one web application (Tomcat/Java/MySQL) and i want to get the
number of users who are currently accessing the application.

Also I want to get the user details of each user, which is stored in a
database.

How can I do this? Pls help.

Regards
Mary

Index ‹ java-programmer

Next
- 1
  - JCombobox custom PopupHow can i make a Combo box (JComboBox) display a custom control as
    popup. I want to show a Jtable instead of a JList.
    
    Thanks.
    Paolo.
- 2
  - tag-lib and JSTL expression libraryHallo, I have created a tag-lib. They ask me if it integrates
    with the JSTL expression library.
    
    In other words, I would like to be able to express this:
    
    <tag attribute="<% = somevar %> "/>
    
    as:
    
    <tag attribute="${value}"/>
    
    any articles/tutorials explaining how to achieve this?
    
    thanks
    
    l.
- 3
  - getting around html encoding in outputText tag (JSF)Hi,
    
    I'm getting a value to my JSP page (using JSF) with outputText from a
    bean that has html encoding in it.
    
    How could I temper with the HTML encoding so that I could preserve
    certain tags? I need to have a few <BR> inside the text and want'em
    displayed in HTML code, not <BR> etc...
    
    What I'm doing is having a properties file for end users to modify. And
    since there are some longer texts, they want to add paragraphs and line
    breaks every now and then. So I've written a method that searches the
    string for example \n and replaces'em with <br> just before this string
    is sent to JSP. But now the encoding happens...
    
    Or what would be the smartest way?
    
    Regards,
    Niko
- 4
  - Struts and EJB mix upi surfed google a lot but nowhere i found a sample code about how to
    integrate Struts and EJB.
    
    all i got is advice of "session facade" , "business delegate" etc etc.
    
    no sample code !!
    
    it seems to me that truts and EJB's can not be mixed.
    
    i opened EJB book and they did not talk about mixing with Struts !
    i opened Struts book and they did not talk about mixing with EJB!
    
    i found an article of DEVX article though which is not good and well
    -explained.
    
    and did not find in the net about how to mix Struts and EJB.
    
    is there anybody can provide me some resoures/links/book/SAMPLE CODE
    recommendation about this mixing ?
- 5
  - MI5 Persecution: Surveillance methods 5/8/95 (5827)From: Pamela Willoughby <email***@***.com>
    Newsgroups: uk.misc
    Date: Sat, 05 Aug 1995 18:08:32 GMT
    Organization: Myorganisation
    Lines: 15
    Message-ID: <email***@***.com>
    
    >Hmmm, strange eh.
    >I mentioned all this goings on to my boyfriend, who works for the
    >British intelligence service, and he assures me this sort of thing
    >never goes on.. not ever...honest.
    >Though he said the name was familiar...
    
    it does go on, although it's an open question who does it.
    
    Some time ago there were press reports of an Army intelligence person
    called Jones who claimed Diana and Hewitt had been photographed in a
    compromising position... he said he'd been doing this as part of an
    Army unit which had previously operated in Northern Ireland.
    
    Then Hewitt said he'd been told the same thing by some Army people,
    and that they were threatening to release the tapes unless they
    curtailed their liaison... as per usual everyone denied everything,
    painted Jones as the "Jones twins" - not very original in how
    they deal with their perceived enemies, are they?
    
    You have to wonder how they manage to achieve this sort of
    surveillance though. Audio you can understand, it's possible to put
    a microphone through the wall, and apparently there exist devices
    which will retrieve sound from a laser beam bounced off a window -
    sounds sci-fi, but there's a well known surveillance electronics
    company in London which sells these things.
    
    But how would you get video out of a room, unless you had actual
    physical access in order to plant a device for pickup? We're not
    talking about looking in from afar, but an actual device within
    the room. You could either drill through the wall and shove a
    pickup through; or you could supply a trojan device with a hidden
    pickup inside; but most likely, you would have to physically break
    into your target room to plant a camera. That's not an infeasible
    option; all it means is having your target(s) watched to make sure
    they're not in the vicinity, then you negotiate any locks on the
    property and find a suitable receptacle for your device.
    
    The next question is how they defeat the usual methods of counter-
    surveillance. We had private detectives carry out a "sweep" of
    every room and the telephone line. They found nothing. That
    indicates at least four possibilities that I can think of;
    (this is all guesswork BTW, and probably fanciful guesswork
    at that!)
    
    1) no bugs (pull the other one)
    
    2) radio-transmitting devices which can be controlled from an
    external source, ie you can instruct them to switch off
    when you detect a counter-surveillance sweep taking place
    
    3) hard-wired devices; probe microphones or whatever they're
    called, things you poke through the wall
    
    4) passive surveillance devices; so you bounce laser or
    radio waves off a suitable reflecting surface (again,
    sounds far-fetched but such things may apparently exist).
    
    5) there is a fifth possibility, that the PI's didn't detect
    an actual transmitting device; there are technologies
    specifically designed to avoid detection, eg frequency hopping
    and suchlike. But how much sophistication could you build in
    to a device which would have to be small enough to be
    physically concealable?
    
    I guess the real question is to find out who is ultimately
    behind these "goings on". And if the "great and good" (or
    the better known, at any rate) can't protect themselves,
    what hope is there for the rest of us?
    
    5827
    
    --
    Posted via a free Usenet account from http://www.teranews.com
- 6
  - rmi activation and codebaseHello folks,
    
    I have created three activatable rmi services. Now I want them to use three
    different codebases for each service (like http://xyz/serivce1.jar http:/
    xyz/service2.jar ...).
    Each service is in its own activation group (this means it runs in it's own
    jvm if I remember right). I tried to set the java.rmi.server.codebase
    property for the activation group descriptor to the apropriate value. But
    still all services seems to run with the same codebase.
    
    What would be the preferred way to specify a different codebase for each
    activatable object? I also tried to set the java.rmi.server.codebase
    property during rmid startup to something like:
    -J-Djava.rmi.server.codebase="http://xyz/service1.jar http://xyz
    service2.jar" but this won't work either...
    
    Greetings,
    Marcus
- 7
  - rxtx problem, please help!Hello!
    
    So I am trying to access a virtual serial port using the rxtx
    library. I enumerate the ports, and loop through them attempting to
    open each one. Although the portId.isCurrentlyOwned() returns false,
    portId.open() still throws a PortInUseException, and when I call
    portId.getCurrentOwner(), it returns null.
    
    Here is relevant code:
    
    portList = CommPortIdentifier.getPortIdentifiers();
    
    while (portList.hasMoreElements()) {
    portId = (CommPortIdentifier)portList.nextElement();
    
    /* only iterate through serial ports */
    if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL) {
    
    /* attempt to open the port */
    try {
    if (portId.isCurrentlyOwned()) {
    System.out.println(portId.getName() + " is owned");
    } else {
    System.out.println(portId.getName() + " is not
    owned");
    }
    serialPort = (SerialPort)portId.open("Square2Plus",
    2000);
    } catch (PortInUseException e) {
    //if the port is unavailable, move to the next one
    System.out.println(portId.getName() + " is owned by " +
    portId.getCurrentOwner());
    continue;
    }
    }
    }
    
    if(portOpen) {
    System.out.println(portId.getName() + "is open!");
    serialPort.close();
    } else {
    System.out.println("port not found");
    }
    
    Running this code produces:
    
    COM3 is not owned
    COM3 is owned by null
    COM5 is not owned
    COM5 is owned by null
    port not found
    
    So if the ports aren't owned, why is it throwing this exception, and
    what can I do about it?
    
    Please and thank you all so much!
    Joshua
- 8
  - Easy Java Quiz: Are you interested?Hi; to all you gurus out there,
    I did this quiz two semester ago, I got 70%, but however I tend to
    differ with the result. I have cross-checked this a hundred times, I
    still come with the same answers. So I wanted to see, if all you guys
    will come up with the same answer. Do you think, you are up to it.
    well here, it is, with my answers, and I stick by them, if anyone
    differs put yours up, or email answers with reasons, for I am really
    interested.
    
    My Answers
    1. A
    2. A
    3. B
    4. C
    5. D
    6. A
    7. C
    8. D
    9. B
    10. C
    
    Quiz:
    
    1. Which of the following is not a specific GUI component (control or
    widgit)?
    a)String. b)Label. c)Menu. d) List.
    2. Which of the following is not a valid constructor for a JLabel?
    a)JLabel( int, horizontalAlignment, Icon image ); b)JLabel(
    Icon image );
    c)JLabel( String text, Icon image, int horizontalAlignment );
    d)JLabel( String text, int horizontalAlignment );
    3. Which of the following is not necessary to use the event
    delegation model?
    a) An event listener must be registered. b)An event handler must be
    implemented.
    c) The appropriate interface must be implemented. d)The appropriate
    interface must be registered.
    4. Which of the following is a MouseMotionListener method?
    a) mousePressed. b) mouseExited. c)mouseDragged.
    d)mouseClicked.
    5. The layout manager that allows alignment to be controlled is:
    a) FlowLayout. b) BorderLayout. c)GridLayout. d)None of the above.
    6. Which of the following GridBagConstraints specifies the number of
    columns a component will occupy?
    a) gridwidth. b)gridheight. c) weightx. d)weighty.
    7. A JFrame supports three operations when the user closes the
    window. Which of the choices below is not one of the three:
    a) DISPOSE_ON_CLOSE. b)DO_NOTHING_ON_CLOSE. c)LOWER_ON_CLOSE.
    d)HIDE_ON_CLOSE.
    8. To create a fixed space between all components using BoxLayout,
    use the method:
    a) createVerticalStrut(). b)createHorizontalStrut(). c)createGlue().
    d)createRigidArea().
    9. Which layout manager is the default for JFrame?
    a) FlowLayout. b)BorderLayout. c)GridLayout. d)None of the above.
    10. When a JComboBox is clicked on:
    a)An ItemEvent is generated. b)A scrollbar is always generated. c)An
    ActionEvent is generated. d)The JComboBox expands to a list.
- 9
  - pack() and BufferedImage in JPanelI want to draw a jpg image in a JFrame, so I used JPEGImageDecoder and read
    it into a BufferedImage, which I draw to a JPanel.
    
    But when I add the component (JPanel) to the JFrame, pack() doesn't work,
    and I have to setSize() explicitly.
    
    Why doesn't pack() work? I can't do imagePanel.getWidth() either, it's 0
    until visible.
    (Oh, I should mention, pack() still doesn't work after it's visible...do I
    have to wait
    until the image is rendered?)
    
    Also, what's the best way to swap images dynamically in this case?
    
    TIA
    Jeff
    
    ////////////////////////////////////////////////////////////////////////////
    /////////////////////////////////////////////
    public class MyImagePanel {
    
    static String filename = "picture.jpg";
    
    public static void main(String[] args) {
    JFrame frame = new JFrame("MyImagePanel");
    frame.addWindowListener(new WindowAdapter() {
    public void windowClosing(WindowEvent e) {
    System.exit(0);
    }
    });
    
    MyImagePanel panel = new MyImagePanel();
    ImagePanel imagePanel = new ImagePanel(filename);
    
    frame.getContentPane().add(imagePanel, BorderLayout.CENTER);
    
    frame.setSize((int)imagePanel.image.getWidth()+8,(int)imagePanel.image.getHe
    ight()+22);
    frame.setLocation(100, 100);
    frame.setVisible(true);
    }
    }
    
    class ImagePanel extends JPanel {
    BufferedImage image;
    public ImagePanel(String filename) {
    try {
    InputStream in = getClass().getResourceAsStream(filename);
    JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(in);
    image = decoder.decodeAsBufferedImage();
    in.close();
    // System.out.println((int)image.getWidth());
    // System.out.println((int)image.getHeight());
    } catch (Exception e) {
    System.out.println(e);
    System.exit(0);
    }
    }
    
    public void paintComponent(Graphics g) {
    g.drawImage(image, 0, 0, this);
    }
    }
- 10
  - jdk15 dopes not compile on i386When I try to compile jdk15 on FreeBSD 7.0 i386, I get this error, but
    not on FreeBSD 7.0 amd64.
    
    gmake[1]: Entering directory `/usr/ports/java/jdk15/work/install/make'
    gmake[1]: Leaving directory `/usr/ports/java/jdk15/work/install/make'
    
    Build Machine Information:
    build machine =
    
    Build Directory Structure:
    CWD = /usr/ports/java/jdk15/work/control/make
    TOPDIR = ./../..
    CONTROL_TOPDIR = ./../../control
    HOTSPOT_TOPDIR = ./../../hotspot
    J2SE_TOPDIR = ./../../j2se
    DEPLOY_TOPDIR = ./../../deploy
    INSTALL_TOPDIR = ./../../install
    SPONSORS_TOPDIR = ./../../sponsors
    
    Build Directives:
    BUILD_HOTSPOT = true
    BUILD_MOTIF = false
    BUILD_INSTALL = true
    BUILD_SPONSORS = false
    
    Hotspot Settings:
    HOTSPOT_BUILD_JOBS =
    
    Bootstrap Settings:
    BOOTDIR = /usr/local/diablo-jdk1.5.0
    BOOTSTRAP J2SDK VERSION: libc.so.6
    OUTPUTDIR = /usr/ports/java/jdk15/work/control/build/bsd-i586
    
    Build Tool Settings:
    JDK_DEVTOOLS_DIR =
    UNIXCOMMAND_PATH = /bin/
    COMPILER_PATH = /usr/bin/
    DEVTOOLS_PATH = /usr/local/bin/
    USRBIN_PATH = /usr/bin/
    MOTIF_DIR = /usr/local
    CC_VER = 4.2.1
    ZIP_VER = 2.32
    PATH = /sbin:/bin:/usr/sbin:/usr/bin:/usr/games:/usr/local/sbin:/usr/local/bin:/root/bin:/usr/compat/linux/lib
    TMPDIR = /usr/ports/java/jdk15/work/control/build/bsd-i586/tmp
    
    Build Directives:
    USE_ONLY_BOOTDIR_TOOLS =
    USE_HOTSPOT_INTERPRETER_MODE =
    PEDANTIC =
    DEV_ONLY =
    J2RE_ONLY =
    NO_DOCS =
    NO_IMAGES =
    TOOLS_ONLY =
    INSANE =
    PARALLEL_COMPILES = false
    PARALLEL_COMPILE_JOBS = 2
    FASTDEBUG = false
    INCREMENTAL_BUILD = false
    
    Build Platform Settings:
    PLATFORM = bsd
    ARCH = i586
    LIBARCH = i386
    ARCH_FAMILY = i586
    ARCH_DATA_MODEL = 32
    TRUE_PLATFORM = FreeBSD
    OS_VERSION = 7.0-CURRENT
    FREE_SPACE = 573928896
    
    GNU Make Settings:
    MAKE = gmake
    MAKE VERSION =
    MAKECMDGOALS = sanity
    MAKEFLAGS =
    SHELL = /bin/sh
    
    Target Build Versions:
    JDK_VERSION = 1.5.0_12
    MILESTONE = p6
    BUILD_NUMBER = jack_04_sep_2007_19_05
    
    External File/Binary Locations:
    HOTSPOT_SERVER_PATH =
    /usr/ports/java/jdk15/work/control/build/bsd-i586/hotspot-i586/server
    HOTSPOT_CLIENT_PATH =
    /usr/ports/java/jdk15/work/control/build/bsd-i586/hotspot-i586/client
    HOTSPOT_IMPORT_PATH =
    /usr/ports/java/jdk15/work/control/build/bsd-i586/hotspot-i586/import
    MOTIF_DIR = /usr/local
    CACERTS_FILE = ./../src/share/lib/security/cacerts
    
    No setting required for Unix Systems
    WARNING: Your are not building SPONSORS workspace from
    the control build. This will result in a development-only
    build of the J2SE workspace, lacking the installation bundles
    
    ERROR: Your BOOTDIR environment variable does not point
    to a valid Java 2 SDK for bootstrapping this build.
    A Java 2 SDK 5.0_12 build must be bootstrapped using
    J2SDK 1.4.2 fcs (or later).
    Apparently, your bootstrap JDK is version libc.so.6
    Please update your ALT_BOOTDIR setting and start your build again.
    
    Exiting because of the above error(s).
    
    gmake: *** [post-sanity] Error 1
    *** Error code 2
    
    Stop in /usr/ports/java/jdk15.
    *** Error code 1
    
    Stop in /usr/ports/java/jdk15.
    enc#
    _______________________________________________
    email***@***.com mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-java
    To unsubscribe, send any mail to "email***@***.com"
- 11
  - Java databaseLew schrieb:
    > email***@***.com wrote:
    >> Thanks for the replies. After looking at the different options I think
    >> I'll go with Derby. i was very tempted by the good speed reports of
    >> HSQL but I have not necessarily got loads of memory to play with so
    >> Derby seems to suit my needs best
    >
    > And it has the advantage of not requiring a separate download.
    >
    Why not?
    
    Derby seems to be not included in most Java installations.
    When I installed Java the last time there was an option for derby.
    Default for derby is to be not installed.. So I assume thats what most
    users will have.
    Also I think I read on Ubuntu/Linux derby is a seperate package, so also
    not mandatory.
    
    Derby seems to be a good choice for testing stuff but it seems not to be
    software that you can rely on being on the users machine.
    
    Christian
- 12
  - Jon Skeet (christmas miracle)Jon Skeet died in a car crash in Southhampton/UK 6 weeks ago.
    He lost control over his white Bentley and crashed against a 200 years
    old oak-tree. Jon was dead immediately.
    
    R.I.P Jon Skeet
    We will never forget you.
    
    ~*#~*#~*#~*#~*#~*#~*#~*#~*#~*#~*#
    
    Christmas-miracle
    
    ~*#~*#~*#~*#~*#~*#~*#~*#~*#~*#~*#
    
    Oh wait ... a miracle happened.
    Bill Gates praied to godfather and Jon Skeet was reborn as Microsoft-MVP.
    Jon-Skeet-posting-statistics / Timespan Dec-10-2003 to Dec-20-2003
    
    Postings to microsoft.public.dotnet.csharp : around 150
    Postings to comp.lang.java.programmer : exactly 0
    
    ~*#~*#~*#~*#~*#~*#~*#~*#~*#~*#~*#
- 13
  - open source requirements management tool v1.4 (Java Swing)Hi,
    
    As an FYI OSRMT version 1.4 has been released (GPL). OSRMT is a Java
    Swing based software development tool for requirements analysts,
    product managers, developers and quality testers. It organizes
    requirements, features, design, implementation and any other artifacts
    you define into a hierarchy with full traceability, versioning, and
    change control.
    
    Version 1.4 provides many performance enhancements, user interface fine
    grained control realized through scripting and a new reporting system
    using XML generated from the business layer.
    
    For more information see
    
    http://www.osrmt.com
    
    The full list of features are below:
    
    System Requirements
    
    Oracle (Express) database or
    MySQL 4.1+ database or
    SQLServer (Express) database or
    MS Access database or
    PostgreSQL 8.1+ new to 1.2
    
    Java 1.5 client or
    Java 1.5 client + JBoss server (included)
    Web client + JBoss server new to 1.2
    
    Functionalty
    
    Artifact definition and data entry - features, requirements, source,
    test cases etc.
    Binary attachments.
    File or hyperlinks.
    Hierarchal organization of artifacts.
    Sequence artifacts up/down within siblings new to 1.3.
    User defined priority, status etc.
    Source, author, description, and many more fields.
    Track entire history of changes made.
    Versioning of artifacts.
    Uniquely identify artifacts.
    Use arrow keys to navigate tree with description pane. new to 1.3.
    ------------------------------------
    Requirement definition of Use case steps.
    Test case definition of test case steps.
    Data entry of multiple details per artifact.
    ------------------------------------
    Dependencies between any artifacts (many to many).
    Traceability - traced, not traced.
    Traceability tree for auditing and tracing new to 1.3.
    Traceability matrix.
    Traceability spanning multiple products. new to 1.4.
    Graph identifying all dependencies of a selected artifact to determine
    impact of change.
    ------------------------------------
    User login environment specifc.
    User password unrecoverable - password reset only.
    User positions with custom privileges. improved in 1.2
    Customize controls on data entry forms. improved in 1.2
    Javascript for fine grained access control on user interface. realized
    in 1.4.
    Duplicate all forms/controls from artifact to another. new to 1.3.
    Customize system views.
    System options. new to 1.3.
    Duplicate security from one position to another. new to 1.2
    User change password.
    LDAP authentication. alpha code
    ------------------------------------
    Sort artifact list.
    Filter artifact list.
    Search artifact list. improved in 1.4.
    ------------------------------------
    Change control request entry new to 1.3.
    Change control custom views new to 1.3.
    User groups. new to 1.3.
    ------------------------------------
    Reports generate PDF or HTML new to 1.2
    Standard reports.
    Custom reports. improved in 1.2
    Report writer. new to 1.2
    Report criteria from filtered artifact list. new to 1.2
    Custom report writing capabilities using XML new to 1.4.
    ------------------------------------
    Binary export of system to replicate reference environment.
    Export artifacts to XML.
    Import artifacts from XML improved in 1.2.
    Command line import artifact tree to reflect filesystem files new to
    1.3.
    Command line export artifacts to HTML new to 1.3.
    ------------------------------------
    System upgrade/database migration tools. new to 1.2. improved 1.3.
    Dynamic just in time tree loading. new to 1.4.
    ------------------------------------
    Language translation import/export. new to 1.3.
- 14
  - Parallel GC in 1.4.2Just a quick question concerning ParallelGC. Since ParallelGC uses the
    UseAdaptiveSizePolicy to figure out the parameters (it will bark if you
    try to set the -ms parameter) is it necessary or even desired to set the
    -mx parameter? Is there a limit in this mode? What happens if you have
    2 JVMs running on the same box and neither specifies the -mx parameter?
    Is the default used or does the JVM compute it or do the JVMs try to
    get as much as they can starving each other out?
- 15
  - Another compile-error for java (jdk14) on FreeBSD-5.3Hallo @all!
    
    Yesterday I tried to install Java (jdk14) on my FreeBSD-5.3 RELEASE
    system according to the following steps:
    
    * update the portstree
    * install linux-sun-jdk14 and fix the dependency using pkgdb -F because
    I am using linux-base-8
    * download all the necessary files from SUN as well as the patchset and
    put them into /usr/ports/distfiles
    * kldload linprocfs and mounting the linprocfs
    * go to /usr/ports/java/jdk14 and type make
    
    After a while I get the following error messages which appear to be
    "new". I couldn't find hints in the java mailing-list archives and even
    google did not return useful results. As the message is quite long, I
    have cut the (probably) less important part. Maybe one of you has
    encountered the same problem and knows how to solve it.
    
    Thank you very much!
    
    Sincerely, Andreas Tuecks
    
    FreeBSD-5# make
    ===> Building for jdk-1.4.2p6_7
    # Start of jdk build
    bsd i586 1.4.2-p6 build started: 04-12-12 20:04
    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-i586ARCH_DATA_MODEL=32
    MILESTONE=p6 BUILD_NUMBER=atuecks_12_dec_2004_20_04 ; ); \
    fi
    Syntax error: "(" unexpected
    gmake[1]: Entering directory `/usr/ports/java/jdk14/work/deploy/make'
    [: -ne: unexpected operator
    gmake[1]: Leaving directory `/usr/ports/java/jdk14/work/deploy/make'
    Syntax error: "(" unexpected
    gmake[1]: Entering directory `/usr/ports/java/jdk14/work/j2se/make'
    [: -ne: unexpected operator
    gmake[1]: Leaving directory `/usr/ports/java/jdk14/work/j2se/make'
    
    [...]
    
    Bootstrap Settings:
    JAVAWS_BOOTDIR = /usr/local/linux-sun-jdk1.4.2
    BOOTSTRAP J2SDK VERSION: Segmentation fault (core dumped)
    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 = 3.4.2
    PATH =
    /sbin:/bin:/usr/sbin:/usr/bin:/usr/games:/usr/local/sbin:/usr/local/bin:/usr/X11R6/bin:/root/bin
    
    [...]
    
    Target Build Versions:
    JAVAWS_VERSION = 1.4.2
    MILESTONE = p6
    BUILD_NUMBER = atuecks_12_dec_2004_20_04
    
    Bootstrap Settings:
    BOOTDIR = /usr/local/linux-sun-jdk1.4.2
    BOOTSTRAP J2SDK VERSION: Segmentation fault (core dumped)
    OUTPUTDIR = /usr/ports/java/jdk14/work/control/build/bsd-i586
    
    [...]
    
    Sanity check passed.
    (cd ./../build/bsd-i586/hotspot-i586/tmp; \
    gmake -f /usr/ports/java/jdk14/work/hotspot/build/bsd/Makefile product \
    HOTSPOT_BUILD_VERSION=1.4.2-p6-atuecks_12_dec_2004_20_04
    GAMMADIR=/usr/ports/java/jdk14/work/hotspot ; )
    gmake[1]: Entering directory
    `/usr/ports/java/jdk14/work/control/build/bsd-i586/hotspot-i586/tmp'
    (cd bsd_i486_compiler2/product; gmake)
    gmake[2]: Entering directory
    `/usr/ports/java/jdk14/work/control/build/bsd-i586/hotspot-i586/tmp/bsd_i486_compiler2/product'
    gmake[2]: *** [../generated/MakeDeps.class] Segmentation fault (core dumped)
    gmake[2]: Leaving directory
    `/usr/ports/java/jdk14/work/control/build/bsd-i586/hotspot-i586/tmp/bsd_i486_compiler2/product'
    gmake[1]: *** [product] Error 2
    gmake[1]: Leaving directory
    `/usr/ports/java/jdk14/work/control/build/bsd-i586/hotspot-i586/tmp'
    gmake: *** [product] Error 2
    *** Error code 2
    
    _______________________________________________
    email***@***.com mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-java
    To unsubscribe, send any mail to "email***@***.com"