java-programmer >>Java Sample with LIBODBCXX and UNIXODBC for JDBC acces ?

Java Sample with LIBODBCXX and UNIXODBC for JDBC acces ?

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- 2
  - Changing the Background Color for One Cell in a JTableI've been working on this for a few hours. I've read tutorials and seen
    different examples, but this is still driving me nuts.
    
    I have a table and want to be able to change the color of one cell in it.
    It seems to do this, I can't get a cell renderer and just change the color,
    I have to create my own class to do that. I've tried that and a number of
    other things and can't get it to work.
    
    I finally took the SimpleTableDemo from Sun and checked to make sure it was
    running. Once it was, I added four lines:
    
    boolean isSelected = table.isCellSelected(1, 1);
    DefaultTableCellRenderer defRender = (DefaultTableCellRenderer)
    table.getCellRenderer(1, 1);
    Component cellRenderer = defRender.getTableCellRendererComponent(table,
    "Huml", isSelected, false, 1, 1);
    cellRenderer.setBackground(Color.blue);
    
    (The whole example is at the bottom of this post.)
    
    When I use this example, it turns ALL the cells in the table blue, not just
    the one at 1,1.
    
    I've got several questions about this:
    1) Do I have to create my own cell renderer to change a cell background
    color, or can't I just do it like above? Even when I used my own renderer,
    I still got the actual Component named cellRenderer using the same
    parameters, so what difference would doing it in a separate class make?
    2) The renderer needs the value that is in the cell currently. In my own
    program, I got that from the DefaultTableModel I was using. Here I just
    used the text that was put in that cell. Is there any way to get the cell
    value directly from the table? In this example, I tried getting a
    DefaultTableModel (by casting) from the table, but it didn't work, so I
    couldn't get the data by reading the cell.
    3) Why does this code (above) set the entire table and not just the cell at
    1,1?
    
    If anyone has a simpler example of how to set the background color in just a
    few lines, I'd be glad to see it. I can't believe how much I need to do
    just to change the background color in one table cell!
    
    Thanks for any help/insight!
    
    Hal
    
    ----------------example code----------------
    
    /*
    * SimpleTableDemo.java requires no other files.
    */
    
    import java.awt.Color;
    import java.awt.Component;
    import java.awt.Dimension;
    import java.awt.GridLayout;
    import java.awt.event.MouseAdapter;
    import java.awt.event.MouseEvent;
    
    import javax.swing.JFrame;
    import javax.swing.JPanel;
    import javax.swing.JScrollPane;
    import javax.swing.JTable;
    import javax.swing.table.DefaultTableCellRenderer;
    
    import com.hal.gui.HalCellRenderer;
    
    public class SimpleTableDemo extends JPanel {
    private boolean DEBUG = false;
    
    public SimpleTableDemo() {
    super(new GridLayout(1,0));
    
    String[] columnNames = {"First Name",
    "Last Name",
    "Sport",
    "# of Years",
    "Vegetarian"};
    
    Object[][] data = {
    {"Mary", "Campione",
    "Snowboarding", new Integer(5), new Boolean(false)},
    {"Alison", "Huml",
    "Rowing", new Integer(3), new Boolean(true)},
    {"Kathy", "Walrath",
    "Knitting", new Integer(2), new Boolean(false)},
    {"Sharon", "Zakhour",
    "Speed reading", new Integer(20), new Boolean(true)},
    {"Philip", "Milne",
    "Pool", new Integer(10), new Boolean(false)}
    };
    
    final JTable table = new JTable(data, columnNames);
    table.setPreferredScrollableViewportSize(new Dimension(500, 70));
    // table.setFillsViewportHeight(true);
    
    if (DEBUG) {
    table.addMouseListener(new MouseAdapter() {
    public void mouseClicked(MouseEvent e) {
    printDebugData(table);
    }
    });
    }
    
    //Create the scroll pane and add the table to it.
    JScrollPane scrollPane = new JScrollPane(table);
    
    //Add the scroll pane to this panel.
    add(scrollPane);
    
    //======================================================
    //Only part I have added is the next four lines
    //======================================================
    boolean isSelected = table.isCellSelected(1, 1);
    DefaultTableCellRenderer defRender = (DefaultTableCellRenderer)
    table.getCellRenderer(1, 1);
    Component cellRenderer =
    defRender.getTableCellRendererComponent(table, "Huml", isSelected, false,
    1, 1);
    cellRenderer.setBackground(Color.blue);
    }
    
    private void printDebugData(JTable table) {
    int numRows = table.getRowCount();
    int numCols = table.getColumnCount();
    javax.swing.table.TableModel model = table.getModel();
    
    System.out.println("Value of data: ");
    for (int i=0; i < numRows; i++) {
    System.out.print(" row " + i + ":");
    for (int j=0; j < numCols; j++) {
    System.out.print(" " + model.getValueAt(i, j));
    }
    System.out.println();
    }
    System.out.println("--------------------------");
    }
    
    /**
    * Create the GUI and show it. For thread safety,
    * this method should be invoked from the
    * event-dispatching thread.
    */
    private static void createAndShowGUI() {
    //Create and set up the window.
    JFrame frame = new JFrame("SimpleTableDemo");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
    //Create and set up the content pane.
    SimpleTableDemo newContentPane = new SimpleTableDemo();
    newContentPane.setOpaque(true); //content panes must be opaque
    frame.setContentPane(newContentPane);
    
    //Display the window.
    frame.pack();
    frame.setVisible(true);
    }
    
    public static void main(String[] args) {
    //Schedule a job for the event-dispatching thread:
    //creating and showing this application's GUI.
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
    public void run() {
    createAndShowGUI();
    }
    });
    }
    }
- 2
  - basics of ANThi, i have downloaded and started reading the ant tutorial.
    
    i am confused becuase some of the concepts , the tutorial (jakarta )
    is not making clear.
    
    my objective is to compile and run a java program.
    
    my questions are as follows
    
    it is called in order to compile and run you need a "build.xml" file .
    where is that file ?
    
    QUESTION 1: is it within ant distribution OR i have to make a
    build.xml file myself?
    
    The tutorial does not say anything about it. it just starts straight
    forward with a demo "build.xml" file.
    
    where do i put this "build.xml" file ?
    
    QUESTION 2 :
    
    i have a java code here.
    
    >md src
    
    package oata;
    
    public class HelloWorld {
    public static void main(String[] args) {
    System.out.println("Hello World");
    }
    }
    
    location of this code is "src/oata/HelloWorld.java"
    
    Now tell, where do i put "build.xml" file ?
- 3
  - How to open dialup connection in Java?Hi everyone,
    Who know, how to open dialup connection from Java? (I found only one
    way - to run another program (*.bat file), but it's not good idea). Any
    another suggestions?
    Haim.
- 4
  - Shuffled Poker DeckHi all,
    Im new to Java, and as Training for me I tried to build an Application,
    which returns a shuffled Pokerdeck. (Random from 1 to 52)
    Maybe you will laugh, but i needed a whole day to solve it, and I think its
    even not good solution.
    Well, at least it works, but please could you give me a hint, how to solve
    this problem easier.
    Heres the code:
    /**
    * @(#)Poker.java
    *
    *
    * @author Martin Krainer
    * @version 1.00 2007/1/22
    */
    
    public class Poker {
    
    static int[] deck = new int[52];
    
    void buildDeck() { // builds a deck with 52
    (hopefully) different Integers
    for (int i=0; i<52; i++) {
    deck[i] = (int)(Math.random()*10E7);
    }
    }
    
    void shuffledDeck(int[] a) { // now here I tried hard and
    long to get a field with numbers from 1 to 52
    long[] zahl= new long[52];
    for (int i=0; i<10E7; i++) {
    for (int j=0; j<52; j++) {
    if (i == deck[j]) {
    zahl[j] = j;
    System.out.print( " " + (zahl[j]+1) );
    }
    }
    }
    }
    
    public static void main(String[] args) {
    
    Poker p = new Poker();
    p.buildDeck();
    p.shuffledDeck(deck); //well, it works, but...
    what do you think?
    }
    }
- 5
  - [OT] Teaching OO / Java (was: Concentric Circles Loosing It)Hi !
    "Anthony Borla" wrote:
    >
    > "Alan P" <email***@***.com> wrote in message
    > news:br0efp$ola$email***@***.com...
    > >
    > > I'm a newbie Java student as well, and AFAIK we all start
    > > the same way -> by using a 'Turtle' class. Remember those
    > > little robot things from infant school, with the penUp(),
    > > penDown() etc.
    > >
    > > The idea is not stunning effects, but an introduction to OOPS
    [...]
    > I'm just a very firm believer [based mainly anectdotal, not statistical,
    > evidence] in teaching programming concepts from first principles which, to
    > me, means:
    >
    > * Teaching the rudiments of console windows / command-line
    > usage, which includes the use of editors, compilers, and similar
    > tools.
    
    O.k., this is meant to teach the "DE" (leaving out the leading 'I'). But
    maybe some people want their students to concentrate on the course theme, so
    they decide to use an IDE. Personally, I think one has to know how to deal
    with a language without any external (!) IDE, so you should know about
    "javac" and "java"...
    
    >
    > Taking a Windows environment as an example, all that is needed
    > is knowing how to:
    >
    > - Open up a Command Window
    > - Load and use Notepad [or one of its more versatile
    > replacements]
    > - Invoke javac.exe and java.exe
    >
    > * Teaching language syntax basics using a serial execution
    > programming model, a fancy description for a program
    > which executes by starting at point A and proceeding
    > downwards towards towards point B e.g.
    >
    > ...
    > public static void main(String[] args)
    > {
    > // Point A
    > ...
    > ...
    > // Point B
    > }
    > ...
    >
    > Once students have grasped the basics of structured / object-based
    > programming, all in a serial, non-GUI enviroment, the rudiments of OOP
    > [inheritance, polymophism] can be taught.
    
    This will teach students to write programs the serial way first. In my
    opinion, it would be the better approach to teach basic OO concepts first
    (before even invoking an editor for the first time, maybe using some
    pseudo-language).
    
    Using your approach, students would learn how to write an imperative program
    frist (one big main() method). Then you would introduce a completely new
    paradigm, the structured programming, using functions (other than the main()
    method, but still implementing a single class). Later on, you would
    introduce yet another paradigm, the object-oriented programming implementing
    specialized classes which will focus on certain tasks.
    
    Have you ever tried to teach oo concepts to a - let's say - COBOL programmer
    (nothing to say against COBOL programmer, of course, replace with almost any
    3GL you (don't) like)? You will have a very hard time unless he (or she)
    will understand them, because the imperative paradigm will block their view
    onto objects. So I would always prefer to teach the object-oriented way
    first. For most people, it will be quite easy to write "one big main()
    method" if they are forced to do it, and the oo paradigm will not stand in
    their way.
    
    > Once these basics have been
    > mastered, the next steps could be taken, which would probably be one, or
    > more, of the following:
    >
    > * Algorithms / Data Structures
    
    Data Structures might well be renamed "Object Oriented Design"... ;-)
    
    > * Concurrent / Advanced Programming
    > * Event-driven / GUI Programming
    >
    > I guess you would describe me as decidedly 'old school' in this regard :)
    !
    >
    > In a nutshell, I'm not comfortable with the notion that GUI's and graphics
    > simplify the teaching of very important, fundamental programming ideas,
    but
    > I probably hold a minority opinion here.
    >
    > Programming, like mathematics, can be an exciting field. However, much
    > effort, most of it in mundane areas, must be expended to satisfactorily
    > grasp the basics on which all further learning progress rests. I can
    > appreciate course designers wanting to make programming more interesting
    or
    > accessable, hence the use of GUI's and similar tools, or presenting ideas
    in
    > graphical form. IMO, though, it is best to avoid such things as they sport
    > hidden complexities, and keep things as simple as possible, at least until
    a
    > firm grounding in the basics has been obtained.
    
    Yes. But one might define "basics" somewhat different. You must not have (I
    might even say "should not have") any knowledge about "serial" or
    "functional" programming to learn to write good OO programs.
    
    (O.k., I might have started another thread on this, but then...)
    
    Cheers,
    Michael
- 6
  - Good programming questionI was just wondering as to what is a better standard to program by. If
    I have a class like this:
    class MyClass {
    
    private int myVariable;
    
    private void myMethod1(){
    myVariable = 1;
    }
    private void myMethod2(){
    this.myVariable = 1;
    }
    
    }
    Which method is better? Is there a better choice? Does it make any
    difference which way I do it? Maybe this sounds like an insignificant
    question but I have done this both ways and just don't know if there is
    a good reason to go one way or the other.
- 9
  - Pooling of connectionsHi all,
    
    I've read a few articles about how pooled connections are more
    efficient because you don't need to repeatedly setup/teardown a
    connection - you just acquire connection from the pool.
    
    Exactly what steps in setting up/tearing down a connection are skipped
    by acquiring an already existing connection? Perhaps the steps in
    establishing/tearing down a connection would help in answering this
    question?
    
    Thanks
    
    Taras
- 10
  - polymorphic voodoo?Ok, here is what I am trying to decipher. I have the following code
    
    private void someMethod() {
    ArrayList list1 = null;
    LinkedList list2 = null;
    
    cleverFunction(list1,list2);
    
    }
    
    private void cleverFunction(List first, List second) {
    System.out.println("Static type for first is " + .....);
    System.out.println("Static type for second is " + .....);
    }
    
    Ok, so, given a polymorphic call like this, is it possible, through
    whatever witchcraft necessary, to determine what the static types of
    the type polymorphic parameters are?
    
    Maybe some sort of interrogation of the stack? Maybe some sorta
    reflection?
    
    Ideas?
    christian
    http://christian.bongiorno.org/resume.PDF
- 10
  - Servlet HelpDear Friends
    
    pls help in running servlet in Tomcat. i m not getting which setting
    should i do for it.
    pls send me how to execute a servlet HalloWorld
    
    paresh
- 11
  - Java in AT&T PWPHi,
    I was referred to you because I'm having a problem getting this to run in
    AT&T PWP (Personal Web Pages). I compile the Java Program using NetBeans
    IDE 3.6. I upload the .java, the .class and the .html files to my PWP
    library.
    
    import java.awt.*;
    import java.applet.*;
    import javax.swing.*;
    
    public class AppHelloWorld extends JApplet
    {
    public void init()
    {
    resize(700,100);
    }
    
    public void paint(Graphics g)
    {
    g.drawString("Hello, Applet world!", 10, 25);
    }
    }
    ---------------------------------------------------------------
    This is the page I run in the browser (Internet Explorer and Netscape).
    
    <HTML>
    <HEAD>
    <TITLE>Applet HTML Page</TITLE>
    </HEAD>
    <BODY>
    <H3><HR WIDTH="100%">Applet HTML Page<HR WIDTH="100%"></H3>
    
    <P>
    <APPLET code="AppHelloWorld.class" width=350 height=200>
    </APPLET>
    </P>
    
    <HR WIDTH="100%"><FONT SIZE=-1><I>Generated by NetBeans IDE</I></FONT>
    </BODY>
    </HTML>
    
    This is the message I get from the browser:
    java.lang.ClassFormatError: AppHelloWorld (Extra bytes at the end of the
    class file)
    
    The page will run in Edit*Plus and IE (FILE, OPEN, BROWSE) and Netscape
    (FILE, OPEN FILES, select document).
    
    Can you provide any information on how to get this to run in the browsers?
    
    Wayne Rawls
- 15
  - Need server-side solution to linking in framesDear all,
    
    I am doing some maintainance in a JSP website which has been built
    using frames (and I cannot remove that unfortunately).
    
    So, I have 4 frames (top, and 3 vertical frames underneath the top).
    The frame on the left is supposed to be for navigation, but when I
    click on some navigation items, I am enforced to set the target to the
    own navigation frame, because I need to do some other processing
    (which I cannot avoid), and in the end I am using some javascript code
    to change the location of the center frame (which in an ideal case
    would be the target of the link on the navigation).
    
    Does anyone know a way to avoid the javascript? Is there anyway that I
    can load 2 different urls in 2 different frames via a single link? The
    first URL is just a different set of parameters to the navigation
    menu, and the second URL is the target of the navigation.
    
    Best regards,
    Pablo
- 15
  - Java regex imposture re: Perl regex compatibility// java has claimed to have added Perl style regular expressions ,
    however
    // writing a regular expression containing a variable is ugly in java.
    // in Perl: $rec =~ s/$delimiter//g is easy to write and to read.
    // in java: if delimiter may hold say "||" or "!" isntead of [a-z]
    text,
    // you have to quote it as below with preceding \\Q (not just \Q ) and
    // trailing \\E. ugly and difficult to code!
    
    rec = rec.replaceAll("\\Q" + delimiter + "\\E" ,"");
    
    So even though java has perl style regex in principle, in practice,
    in java they seem nearly unusable!
    
    -A.C. Attlee
- 15
  - Text/Console mode UIHi All,
    
    is there anything like swing but working in text mode? I need a simple
    user interface working in the console mode for my little app.
    
    thanks
    schw
- 15
  - Grid Bag question.I am trying to put together a panel which needs to consist of 20 lines,
    each containing :
    JLabel - 2 columns
    JTextField - 1 colomn
    JTextField - 1 column
    JLabel - 2 Columns
    The JText fields would be filled out from arrays, so it would be layed
    out with the help of a 'for' loop.
    I put together a test program (provided below) to try to emulate this,
    but the layout manager only seems to want to give each entity (JLabel,
    JTextField) the same amount of width each regardless of what I specify
    in the GridWidth fields. Can this be done with specifying sizes for the
    individual JTextfields or labels? Please advise - Thanks - Lou
    
    import java.awt.*;
    import javax.swing.*;
    
    public class Test_GridBag2 {
    
    public static void addComponentsToPane(JPanel pane) {
    
    JButton button;
    JLabel label;
    JTextField jtf;
    pane.setLayout(new GridBagLayout());
    GridBagConstraints c = new GridBagConstraints();
    c.fill = GridBagConstraints.HORIZONTAL;
    //pane.setPreferredSize(new Dimension(300,200));
    
    for (int i = 0; i<3;i++)
    {
    label = new JLabel("test");
    c.gridx = 0;
    c.gridwidth = 2; //2 columns wide
    c.gridy = i; //third row
    c.weightx = 1.0;
    //c.anchor = GridBagConstraints.EAST; //bottom of space
    pane.add(label, c);
    
    jtf = new JTextField();
    c.gridx = 2; //aligned with button 2
    c.gridwidth = 1; //2 columns wide
    c.gridy = i;
    c.weightx = 1.0; //request any extra vertical space
    //c.anchor = GridBagConstraints.EAST;//third row
    pane.add(jtf, c);
    
    jtf = new JTextField();
    c.gridx = 3; //aligned with button 2
    c.gridwidth = 1; //2 columns wide
    c.gridy = i;
    c.weightx = 1.0; //request any extra vertical space
    //c.anchor = GridBagConstraints.EAST;//third row
    pane.add(jtf, c);
    
    label = new JLabel("");
    c.gridx = 4; //aligned with button 2
    c.gridwidth = 2; //2 columns wide
    c.gridy = i;
    //c.insets = new Insets(0,0,0,10);
    c.weightx = 1.0; //request any extra vertical space
    //c.anchor = GridBagConstraints.EAST;//third row
    pane.add(label, c);
    }
    
    }
    
    private static void createAndShowGUI() {
    JFrame frame = new JFrame("GridBagLayoutDemo");
    JFrame.setDefaultLookAndFeelDecorated(true);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JPanel panel = new JPanel();
    addComponentsToPane(panel);
    frame.getContentPane().add( panel );
    
    //Display the window.
    frame.pack();
    frame.setVisible(true);
    }
    
    public static void main(String[] args) {
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
    public void run() {
    createAndShowGUI();
    }
    });
    }
    }
- 15
  - HAVI packages, where?Hi everyone, I want to download HAVI API packages for java but i don't
    know where can i download its. Thank you

Author

Message

pcouas

Posted: 2005-10-14 16:58:00

Top

java-programmer, Java Sample with LIBODBCXX and UNIXODBC for JDBC acces ? Hi,

My Database supplier has developped an Linux Library for UNIXODBC.
It seems i need ti use SourceForge LIBODBCXX library to acces it with
JDBC ?
Where could i found some Java Samples for connection ?

Regards
Philippe

Index ‹ java-programmer

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- 1
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- 5
  - dependency-detection in java - 3rd TakeMike Schilling <email***@***.com> wrote:
    > I've thought about this a bit, though not to the point of creating a design,
    > much less building prototypes. It seems to me that this approach is worth
    > investigating:
    >
    > 1. The interface of each class C in the system needs to be captured and
    > stored persistently, where "interface" means method signatures, field
    > definitions, and constant values. Superclass name too, to cover the changes
    > that can occur if what C inherits changes.
    
    Yes, that's a good start.
    
    > 2. Dependencies also need to be captured and stored persistently. This will
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    While I originally thought into that direction, I now have the
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    suffices.
    
    If any class (well, except for private nested or anonymous ones)
    changes its interface such that it is possible for dependent classes
    to notice the difference, then a full-rebuild is worth it.
    
    My original point of avoiding full-builds is still fulfilled, because
    the full rebuild wouldn't be necessary *everytime*! In the outset,
    the problem was, that one either needs to *always* do full-rebuilds,
    or risk inconsistencies. Now, it's about a reliable indicator, that
    still shouldn't fire too often.
    
    > A. How granular should the dependency information be?
    
    I'd be already happy, if any .class-file's change can be reliably
    characterized as incompatible(*) or not.
    It wouldn't be a question of which java-file changed, but rather:
    Was any .class file changed incompatibly(*) during a normal incremental
    build?
    
    > B. How to generate the dependency information. I presume it can be
    > calculated from .class file analysis
    
    No, not possible (unless javac was modified), because usage of static
    finals is not explicitly "mentioned" in the .class file.
    
    > Inheritance adds some wrinkles. If Sub overrides a method it inherits from
    > Super, that doesn't really change its interface. Classes which previously
    > called Sub.meth() don't have to be recompiled.
    
    Unless it's a static method :-/ ... where dependent classes might continue
    to call Super's version, even if they refer to Sub.meth().
    The same goes with fields and overloaded (even non-static) methods.
    
    (*): Chapter 13 of the JLS-3.0 (Java Language Specification 3rd Edition)
    mentions (among other allowed changes):
    * Adding new fields, methods, or constructors to an existing class or interface.
    as a binary compatible change, but it isn't always compatible in our sense.
    Our rules for compatibility are stricter, in that they demand
    not only linkability, but also "equivalence in behaviour whether
    or not a dependent class is recompiled as well".
    
    > I'm sure there are many more of these which further analysis would reveal.
    I also fear so ... but once I leave out the problem to list all dependents,
    I think that what remains should be possible and still useful.
    
    > One more note: this is an ideal open source project, since it could be
    > greatly useful to the development community and there is no money to be made
    > by solving it.
    
    I wouldn't say so. Making builds reliable without resorting to always
    doing full rebuilds might safe some costs. However, I'm a fan of not
    only using open-source, but also contributing to it ...
- 6
  - Writing ASCII for r-232 output into induction machine??I have a machine that uses induction to bond metals together. The
    machine has a remote heat station that you set the wattage, and the
    time, etc (with up and down buttons) and it will run on its own.
    However, every time I need to bond different metals, thicknesses,
    widths, etc... I need to reset the info and go through the whole
    process again. The machine, has an rs-232 port on the back of it,
    which will accept codes written in ascii that will send that pertinent
    information to it. I would like some help (Im an ascii newbie) with
    writing these programs, so that I can store all the metals,
    thicknesses, etc in a laptop connected to this remote heat station, and
    then I can have anyone run it so long as they can read.
    
    Any help would be greatly appreciated
    Scott
    PLEASE email me at email***@***.com
- 7
  - Display XML Formatted in JTextPaneI'm displaying XML in a JTextPane. I was wondering if there was a way
    to display the XML formatted with color/text/etc. (Basically, I'm
    wondering if I can associated an XML style.) I've searched a bit, but
    I haven't been able to get anything to work.
    
    Thanks
- 8
  - Raymond on Sun's strangleholdanoncoward wrote:
    
    > JTK wrote:
    >
    >>> This made me think of an issue that has kicked around in my head for a
    >>> whle. Just to be clear, IANAL. However, I seem to remember that one
    >>> requirement of a patent be that the needed to be non-obvious to a
    >>> skilled practitioner. Does someone know if this is correct?
    >>
    >>
    >> Correct but irrelevant. Money talks, justice walks. If Sun wants to
    >> shut down a Java implementation, all they need to do is litigate it to
    >> death.
    >
    > How about Mono and .NET. Microsoft has patented the whole lot.
    > Mono is *massively* infringing on copyrighted and patented Microsoft IP.
    > What's your word on that?
    
    Why would I have a "word on that", especially in a Java forum? You're
    the one who love C# so much, you tell us why you prefer it to Java!
- 9
  - Swing runtime problems / Java installation problemsHello all. I have a very simple problem. I am seeking to develop
    java apps on mepis linux (ver. 3.4-3). I have installed jdk 1.6.0 and
    i am having runtime error problems. It seems like a simple matter,
    but i do not know how to solve the problem i am having. I have
    compiled the following code directly from the sun website...
    
    package start;
    
    /*
    * HelloWorldSwing.java requires no other files.
    */
    import javax.swing.*;
    
    public class HelloWorldSwing {
    /**
    * Create the GUI and show it. For thread safety,
    * this method should be invoked from the
    * event-dispatching thread.
    */
    private static void createAndShowGUI() {
    //Create and set up the window.
    JFrame frame = new JFrame("HelloWorldSwing");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
    //Add the ubiquitous "Hello World" label.
    JLabel label = new JLabel("Hello World");
    frame.getContentPane().add(label);
    
    //Display the window.
    frame.pack();
    frame.setVisible(true);
    }
    
    public static void main(String[] args) {
    //Schedule a job for the event-dispatching thread:
    //creating and showing this application's GUI.
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
    public void run() {
    createAndShowGUI();
    }
    });
    }
    }
    
    when i compile, nothing seems to be wrong...
    
    Aesotericon@5[HelloWorldSwing]$ ls
    HelloWorldSwing.java
    Aesotericon@5[HelloWorldSwing]$ /home/Aesotericon/Documents/jdk1.6.0/
    bin/javac HelloWorldSwing.java
    Aesotericon@5[HelloWorldSwing]$ ls
    HelloWorldSwing$1.class HelloWorldSwing.class HelloWorldSwing.java
    Aesotericon@5[HelloWorldSwing]$
    
    when i try to run the program the following happens...
    
    Aesotericon@5[HelloWorldSwing]$ /home/Aesotericon/Documents/jdk1.6.0/
    bin/java HelloWorldSwing
    Exception in thread "main" java.lang.NoClassDefFoundError:
    HelloWorldSwing (wrong name: start/HelloWorldSwing)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
    at
    java.security.SecureClassLoader.defineClass(SecureClassLoader.java:
    124)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:
    260)
    at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:
    276)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:
    319)
    Aesotericon@5[HelloWorldSwing]$ /home/Aesotericon/Documents/jdk1.6.0/
    bin/java .HelloWorldSwing
    Exception in thread "main" java.lang.NoClassDefFoundError: /
    HelloWorldSwing
    Aesotericon@5[HelloWorldSwing]$ unset CLASSPATH
    Aesotericon@5[HelloWorldSwing]$ /home/Aesotericon/Documents/jdk1.6.0/
    bin/java HelloWorldSwing
    Exception in thread "main" java.lang.NoClassDefFoundError:
    HelloWorldSwing (wrong name: start/HelloWorldSwing)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
    at
    java.security.SecureClassLoader.defineClass(SecureClassLoader.java:
    124)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:
    260)
    at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:
    276)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:
    319)
    Aesotericon@5[HelloWorldSwing]$ /home/Aesotericon/Documents/jdk1.6.0/
    bin/java .HelloWorldSwing
    Exception in thread "main" java.lang.NoClassDefFoundError: /
    HelloWorldSwing
    
    As you all see, I have tried several methods of running the program,
    but it will not work. I feel like a simpleton, but does anyone have
    any suggestions? It seems that java is having a hard time finding
    my .class file. I dunno...
    
    J.P.
- 10
  - convert integer to charI have a jsp
    
    ...
    ${mybean.data}
    ...
    
    where mybean is a bean and which "data" field. I would like to convert
    the integer to char, 1->A, 2->B, 3->C.... How can I do it with jstl,
    struts taglib, and anything?
    
    Thanks,
    
    qq
- 11
  - What it the type of the Class without modifierRoedy Green <email***@***.com> wrote:
    > This is one of my pet peeves . It does not have a name. It is
    > referred to with religious reverence by an indirect name "default"
    > which tells you where in is used. Some heretics dare name it
    > "package".
    
    Hey, are you calling me a heretic?!? :)
    
    --
    www.designacourse.com
    The Easiest Way To Train Anyone... Anywhere.
    
    Chris Smith - Lead Software Developer/Technical Trainer
    MindIQ Corporation
- 12
  - JAVA GUI DESIGN SOFTWAREDear:Miss/Mr
    
    May i know where can i get the java software that just similiar to VB
    which can be drag and drop for the GUI design.
    
    Thanks
- 13
  - I only invest in Jeff Relf.Hi Hot Tamales !,
    
    You related another gem ( What a guy ),
    " Internet and technology stocks
    have netted me a loss of approximately 20%.
    FCEL, my one energy investment,
    has netted me a gain of 20%.
    
    I think Energy
    ( cells, hydrogen, renewable, even nuclear )
    are the next wave. "
    
    The value of FCEL didn't go up,
    the value of the dollar,
    ( i.e. the stock of the U.S. government ), went down.
    
    I only invest in Jeff Relf, not that I'm doing any better.
- 14
  - Maximum number of ThreadsI'm developing a simple Java client that runs over a CORBA server.
    The main client thread is waiting for notification from this server.
    On each notification,
    The client creates a new thread executing some logic with the server and close.
    Each session spend most of the time waiting for the server.
    At most there can be ~1000 open session.
    My questions are:
    1. How many threads can be open at the same time
    (with response time of up to ~1 second)?
    2. Does the JVM open a native thread for each java thread?
    
    I know both question is OS and JVM dependent,
    so I'm not expecting exact numbers here. The client will probably run on Solaris or NT.
    
    Thanks.
- 15
  - Classes generated by eclipse vs javac have different serialVersionUIDHi,
    I'm using eclipse 3.2 for development and have configured my project to
    use JDK 1.5.0_07 with Compiler compliance level 1.3 (using default
    compliance settings) and selected all "Classfile Generation" options
    except "Inline finally blocks." The problem I'm having is that the
    class files that are generated by eclipse are not the same as those
    generated by javac (also using JDK 1.5.0_07), which is used in a make
    script. javac is invoked like so:
    
    javac -source 1.3 -g -d classes -nowarn -deprecation -classpath
    <classpath> ...
    
    The different class files cause a problem because I have serialized
    some objects already with the javac classes so when I try to
    deserialize them with the eclipse classes, I get the
    InvalidClassException. When I run serialver on the offending class
    file, I get two different values for the class file generated with
    javac and the one generated using eclipse.
    
    Has anyone ever had this or some similar problem? How do I correct this
    (besides not using the eclipse class files)? I've spent many hours
    scouring the web to find a solution, but have had no success. Any help
    would be really appreciated!
    Thanks,
    Tai