Why are the contents of this table not being shown?

Discussion in 'Java' started by Ramon F Herrera, Nov 10, 2007.

  1. The code below was entirely generated by a visual GUI builder (*).
    This is the way it looks like, in design mode:

    http://patriot.net/~ramon/misc/InvisibleTable.png

    My problem is that the cell contents are not being displayed at run
    time for some reason.

    What I am trying to do is port this NetBeans-specific module to
    standard code and jar:

    http://platform.netbeans.org/tutorials/nbm-open-office.html

    TIA!,

    -Ramon

    (*) from Instantiations at http://www.windowbuilderpro.com/

    -------------------

    package swingexample;

    import java.awt.ComponentOrientation;
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JPanel;
    import javax.swing.JRadioButton;
    import javax.swing.JScrollPane;
    import javax.swing.JTable;
    import javax.swing.JTextField;
    import javax.swing.border.EtchedBorder;
    import javax.swing.table.AbstractTableModel;

    public class SwingExample extends JFrame {

    private JTextField textField;
    private JTable table;

    class TableTableModel extends AbstractTableModel {
    public final String[] COLUMN_NAMES = new String[] {"JavaLobby
    Title", "Date", "Author", "Reply"};
    public int getRowCount() {
    return 0;
    }
    public int getColumnCount() {
    return COLUMN_NAMES.length;
    }
    public String getColumnName(int columnIndex) {
    return COLUMN_NAMES[columnIndex];
    }
    public Object getValueAt(int rowIndex, int columnIndex) {
    return null;
    }
    }


    public static void main(String args[]) {
    try {
    SwingExample frame = new SwingExample();
    frame.setVisible(true);
    } catch (Exception e) {
    e.printStackTrace();
    }
    }

    public SwingExample() {
    super();
    getContentPane().setLayout(null);
    setTitle("Swing Example");
    setBounds(100, 100, 623, 581);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    final JScrollPane scrollPane = new JScrollPane();
    scrollPane.setBounds(30, 23, 554, 215);
    getContentPane().add(scrollPane);

    table = new JTable();
    table.setCellEditor(null);
    table.setShowGrid(true);
    table.setCellSelectionEnabled(true);
    table.setModel(new TableTableModel());
    // table.setValueAt("Hello world?", 2, 3) <-- line added by me.
    scrollPane.setViewportView(table);

    final JPanel panel = new JPanel();
    panel.setBorder(new EtchedBorder(EtchedBorder.LOWERED));
    panel.setName("name here");
    panel.setLayout(null);
    panel.setBounds(26, 345, 563, 74);
    getContentPane().add(panel);

    final JLabel executableLabel = new JLabel();

    executableLabel.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);
    executableLabel.setText("Executable:");
    executableLabel.setBounds(32, 30, 77, 14);
    panel.add(executableLabel);

    textField = new JTextField();
    textField.setBounds(111, 27, 329, 20);
    panel.add(textField);

    final JButton browseButton = new JButton();
    browseButton.setText("Browse...");
    browseButton.setBounds(458, 26, 95, 23);
    panel.add(browseButton);

    final JRadioButton mostRepliedRadioButton = new JRadioButton();
    mostRepliedRadioButton.setSelected(true);
    mostRepliedRadioButton.setText("Most Replied");
    mostRepliedRadioButton.setBounds(169, 452, 113, 23);
    getContentPane().add(mostRepliedRadioButton);

    final JRadioButton leastRepliedRadioButton = new JRadioButton();
    leastRepliedRadioButton.setText("Least Replied");
    leastRepliedRadioButton.setBounds(344, 452, 113, 23);
    getContentPane().add(leastRepliedRadioButton);

    final JButton generateReportButton = new JButton();
    generateReportButton.setText("Generate Report");
    generateReportButton.setBounds(236, 494, 142, 30);
    getContentPane().add(generateReportButton);
    }

    }
    Ramon F Herrera, Nov 10, 2007
    #1
    1. Advertising

  2. Ramon F Herrera

    Lew Guest

    Ramon F Herrera wrote:
    > The code below was entirely generated by a visual GUI builder (*).
    > This is the way it looks like, in design mode:
    >
    > http://patriot.net/~ramon/misc/InvisibleTable.png
    >
    > My problem is that the cell contents are not being displayed at run
    > time for some reason.


    I suspect it's the "return 0" in getRowCount() and the "return null" in
    getValueAt().

    Also, you need to construct your SwingExample instance on the EDT.

    And do not embed TAB characters in Usenet posts!

    Class TableTableModel can be static.

    > -------------------
    > public int getRowCount() {
    > return 0;
    > }
    > public Object getValueAt(int rowIndex, int columnIndex) {
    > return null;
    > }
    >
    > public static void main(String args[]) {
    > try {
    > SwingExample frame = new SwingExample();
    > frame.setVisible(true);


    Oops.

    > } catch (Exception e) {
    > e.printStackTrace();
    > }
    > }


    --
    Lew
    Lew, Nov 10, 2007
    #2
    1. Advertising

  3. On Nov 10, 11:17 am, Lew <> wrote:
    > Ramon F Herrera wrote:
    > > The code below was entirely generated by a visual GUI builder (*).
    > > This is the way it looks like, in design mode:

    >
    > > http://patriot.net/~ramon/misc/InvisibleTable.png

    >
    > > My problem is that the cell contents are not being displayed at run
    > > time for some reason.

    >


    > I suspect it's the "return 0" in getRowCount() and the "return null" in
    > getValueAt().
    >



    You are right, Lew. I modified the two returns:

    public int getRowCount() {
    return 10;
    }

    public Object getValueAt(int rowIndex, int columnIndex) {
    return "null";
    }

    and now the app behaves better. I guess I am supposed to build the
    table contents inside the 'TableTableModel'? IOW:

    contents[1, 2] = "Hello";
    contents[1, 3] = "World";
    [...]
    public Object getValueAt(int rowIndex, int columnIndex) {
    return contents[rowIndex, columnIndex];
    }

    Matisse provides a fully implemented mechanism to fill JTables in
    design mode. I am less impressed by the mechanism above, which seems
    to be the only option with WindowBuilder.

    -Ramon
    Ramon F Herrera, Nov 10, 2007
    #3
  4. On Nov 10, 11:17 am, Lew <> wrote:
    > Also, you need to construct your SwingExample instance on the EDT.


    I don't understand. :-( Are you saying that I should switch
    (complement?) my WindowBuilder Pro to the Eiffel Development Tool?

    The other comment I didn't understand was your "oops". What's wrong
    with:

    frame.setVisible(true);

    ?

    -Ramon
    Ramon F Herrera, Nov 10, 2007
    #4
  5. Ramon F Herrera

    Lew Guest

    Ramon F Herrera wrote:
    > On Nov 10, 11:17 am, Lew <> wrote:
    >> Also, you need to construct your SwingExample instance on the EDT.

    >
    > I don't understand. :-( Are you saying that I should switch
    > (complement?) my WindowBuilder Pro to the Eiffel Development Tool?


    Event Dispatch Thread.

    Swing is not thread safe, so all Swing methods must execute in its thread.
    Your calls to the Swing library occurred in the main thread of the Java
    program. This can lead to unexpected behavior.

    > The other comment I didn't understand was your "oops". What's wrong
    > with:
    >
    > frame.setVisible(true);


    <http://java.sun.com/javase/6/docs/api/javax/swing/package-summary.html#package_description>


    --
    Lew
    Lew, Nov 10, 2007
    #5
  6. Ramon F Herrera

    Lew Guest

    Ramon F Herrera wrote:
    >>> My problem is that the cell contents are not being displayed at run
    >>> time for some reason.


    Lew wrote:
    >> I suspect it's the "return 0" in getRowCount() and the "return null" in
    >> getValueAt().


    Ramon F Herrera wrote:
    > You are right, Lew. I modified the two returns:
    >
    > public int getRowCount() {
    > return 10;
    > }
    >
    > public Object getValueAt(int rowIndex, int columnIndex) {
    > return "null";
    > }


    I predict that your JTable will always think the table is ten rows long, and
    will show the string "null" at every cell.

    Read
    <http://java.sun.com/docs/books/tutorial/uiswing/components/table.html>
    particularly
    <http://java.sun.com/docs/books/tutorial/uiswing/components/table.html#data>

    Among other things, if you want your table to be editable you will need a method
    public void setValueAt(Object value, int row, int col)

    <http://java.sun.com/javase/6/docs/api/javax/swing/table/AbstractTableModel.html#setValueAt(java.lang.Object,%20int,%20int)>


    --
    Lew
    Lew, Nov 10, 2007
    #6
  7. Lew wrote:
    ..
    >> frame.setVisible(true);

    >
    ><http://java.sun.com/javase/6/docs/api/javax/swing/package-summary.html#package_description>


    I sometimes wonder 'What could possess people to use
    methods deprecated in 1.2?'.

    One source is the unmaintained Sun Java Tutorial codes
    that use it, and apparently another is the Java 6.0 package
    docs., from which this example is lifted.

    <snippet>
    ...
    public static void main(final String[] args) {
    // Schedule a job for the event-dispatching thread:
    // creating and showing this application's GUI.
    SwingUtilities.invokeLater(new Runnable() {
    public void run() {
    new MyApp(args).show();
    }
    });
    }
    </snippet>

    ..Sheesh!

    --
    Andrew Thompson
    http://www.athompson.info/andrew/

    Message posted via JavaKB.com
    http://www.javakb.com/Uwe/Forums.aspx/java-general/200711/1
    Andrew Thompson, Nov 11, 2007
    #7
  8. On Nov 10, 8:04 pm, "Andrew Thompson" <u32984@uwe> wrote:
    > Lew wrote:
    >
    > .
    >
    > >> frame.setVisible(true);

    >
    > ><http://java.sun.com/javase/6/docs/api/javax/swing/package-summary.htm...>

    >
    > I sometimes wonder 'What could possess people to use
    > methods deprecated in 1.2?'.
    >
    > One source is the unmaintained Sun Java Tutorial codes
    > that use it, and apparently another is the Java 6.0 package
    > docs., from which this example is lifted.
    >
    > <snippet>



    Lew & Andrew:

    Given the weaknesses of Swing, which in addition to being thread-
    unsafe has bugs that continuously crash the JRE in 1.6, should I avoid
    it altogether and concentrate on learning SWT (*)?

    -Ramon

    (*) JFaces included
    Ramon F Herrera, Nov 11, 2007
    #8
  9. Ramon F Herrera

    Lew Guest

    Ramon F Herrera wrote:
    > Given the weaknesses of Swing, which in addition to being thread-unsafe


    As compared to what other graphics library?

    All the GUI APIs are thread-unsafe AFAIK.

    > has bugs that continuously crash the JRE in 1.6,


    What bugs are those?

    > should I avoid it altogether and concentrate on learning SWT (*)?


    I'd stick with Swing.

    > (*) JFaces included


    I'm not familiar with JFaces.

    --
    Lew
    Lew, Nov 11, 2007
    #9
  10. Lew wrote:
    >> Given the weaknesses of Swing, which in addition to being thread-unsafe

    >
    >As compared to what other graphics library?
    >
    >All the GUI APIs are thread-unsafe AFAIK.


    AWT* is 'fine' that way - it is 'thread-safe' AFAIU.

    Otherwise I agree with the gist of the trimmed text.

    * But no, I would not recommend using AWT just because
    you need a handful of extra lines to ensure Swing works
    as expected. I imagine SWT is the same, though I have not
    bothered to check.

    --
    Andrew Thompson
    http://www.athompson.info/andrew/

    Message posted via JavaKB.com
    http://www.javakb.com/Uwe/Forums.aspx/java-general/200711/1
    Andrew Thompson, Nov 11, 2007
    #10
  11. Andrew Thompson, Nov 11, 2007
    #11
  12. On Nov 10, 9:55 pm, Lew <> wrote:
    > Ramon F Herrera wrote:
    > > Given the weaknesses of Swing, which in addition to being thread-unsafe

    >
    > As compared to what other graphics library?
    >
    > All the GUI APIs are thread-unsafe AFAIK.
    >
    > > has bugs that continuously crash the JRE in 1.6,


    >
    > What bugs are those?
    >



    The bug(s) appears in Java 6 + Swing + WinXP. The easiest way to
    trigger it is with the file chooser, but other controls (such as a
    "Next" button) can trigger it too.

    See crash dump below.

    -Ramon

    -----------
    #
    # An unexpected error has been detected by Java Runtime Environment:
    #
    # EXCEPTION_FLT_STACK_CHECK (0xc0000092) at pc=0x00bfcea9, pid=2292,
    tid=2396
    #
    # Java VM: Java HotSpot(TM) Client VM (1.6.0_02-b05 mixed mode)
    # Problematic frame:
    # v ~RuntimeStub::resolve_opt_virtual_call
    #
    # If you would like to submit a bug report, please visit:
    # http://java.sun.com/webapps/bugreport/crash.jsp
    #

    --------------- T H R E A D ---------------

    Current thread (0x04d70c00): JavaThread "Swing-Shell" daemon
    [_thread_in_Java, id=2396]

    siginfo: ExceptionCode=0xc0000092, ExceptionInformation=0x00000000
    0x0547f904

    Registers:
    EAX=0x1c2d0520, EBX=0x1f94ed90, ECX=0x100898b8, EDX=0x103c0438
    ESP=0x0547f898, EBP=0x0547f9a8, ESI=0x1f94ede0, EDI=0x100898ec
    EIP=0x00bfcea9, EFLAGS=0x00010212

    Top of Stack: (sp=0x0547f898)
    0x0547f898: ffff1372 ffff0000 ffffffff 00be0369
    0x0547f8a8: 03e8001b 0547f970 ffff0023 03847800
    0x0547f8b8: 1f922178 ed6c01e5 796003d3 eab00392
    0x0547f8c8: 02e0ea98 6d99ca03 1f200778 00111c04
    0x0547f8d8: 00010000 f9de6000 b504f333 d0003fff
    0x0547f8e8: b666fb66 400187c3 fffff800 ffffffff
    0x0547f8f8: 000043fe 00000000 00000000 7c90e57c
    0x0547f908: 7c80a027 00000730 6d8881c5 0547fb7c

    Instructions: (pc=0x00bfcea9)
    0x00bfce99: 00 00 83 ec 6c dd 34 24 9b dd 24 24 dd 5c 24 6c
    0x00bfcea9: dd 5c 24 74 dd 5c 24 7c dd 9c 24 84 00 00 00 dd


    Stack: [0x05430000,0x05480000), sp=0x0547f898, free space=318k
    Native frames: (J=compiled Java code, j=interpreted, Vv=VM code,
    C=native code)
    v ~RuntimeStub::resolve_opt_virtual_call
    J sun.awt.shell.Win32ShellFolder2$FolderDisposer$1.call()Ljava/lang/
    Object;
    J java.util.concurrent.FutureTask$Sync.innerRun()V
    J java.util.concurrent.FutureTask.run()V
    J java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Ljava/lang/
    Runnable;)V
    j java.util.concurrent.ThreadPoolExecutor$Worker.run()V+28
    j sun.awt.shell.Win32ShellFolder2$ComTaskExecutor$2.run()V+7
    j java.lang.Thread.run()V+11
    v ~StubRoutines::call_stub


    --------------- P R O C E S S ---------------

    Java Threads: ( => current thread )
    =>0x04d70c00 JavaThread "Swing-Shell" daemon [_thread_in_Java,
    id=2396]
    0x04d35400 JavaThread "Image Fetcher 1" daemon [_thread_blocked,
    id=3788]
    0x04d31c00 JavaThread "Image Fetcher 0" daemon [_thread_blocked,
    id=3792]
    0x04b7bc00 JavaThread "Thread-8" daemon [_thread_blocked, id=604]
    0x04d77800 JavaThread "Refreshing filesystem" [_thread_blocked,
    id=344]
    0x04d72c00 JavaThread "FS Synchronizer" [_thread_blocked, id=3100]
    0x04dec000 JavaThread "Smack Listener Processor" daemon
    [_thread_blocked, id=2884]
    0x04dd0c00 JavaThread "Smack Packet Reader" daemon
    [_thread_in_native, id=2892]
    0x04d3a000 JavaThread "Smack Packet Writer" daemon [_thread_blocked,
    id=2860]
    0x04d9cc00 JavaThread "WebServer thread pool" [_thread_blocked,
    id=976]
    0x0333c800 JavaThread "Change List Updater" [_thread_blocked,
    id=3120]
    0x039ef800 JavaThread "You got mail" [_thread_blocked, id=3796]
    0x03a94c00 JavaThread "UserActivityMonitor thread" [_thread_blocked,
    id=1232]
    0x04b3f000 JavaThread "WebServer thread pool" [_thread_blocked,
    id=2516]
    0x04b3e000 JavaThread "/192.168.1.100 IDEtalk Multicast
    Thread" [_thread_in_native, id=3172]
    0x032dd800 JavaThread "User Monitor Thread" [_thread_blocked,
    id=4032]
    0x04bc2c00 JavaThread "XML-RPC Weblistener" [_thread_in_native,
    id=3820]
    0x032a4800 JavaThread "Network Message Dispatcher" [_thread_blocked,
    id=876]
    0x03a42800 JavaThread "ApplicationImpl pooled
    thread" [_thread_blocked, id=2700]
    0x038ddc00 JavaThread "You got mail" [_thread_blocked, id=3756]
    0x03917000 JavaThread "TimerQueue" daemon [_thread_blocked, id=2684]
    0x038f3800 JavaThread "ApplicationImpl pooled
    thread" [_thread_blocked, id=3196]
    0x038fe400 JavaThread "JetConnect reader" [_thread_blocked, id=3936]
    0x0388c400 JavaThread "Exe4JStartupThread" daemon [_thread_blocked,
    id=3616]
    0x037a6800 JavaThread "ApplicationImpl pooled
    thread" [_thread_blocked, id=3484]
    0x03738800 JavaThread "ApplicationImpl pooled
    thread" [_thread_blocked, id=3580]
    0x037a4400 JavaThread "XML-RPC Weblistener" [_thread_in_native,
    id=2528]
    0x0378ec00 JavaThread "StoreRefreshStatusThread" daemon
    [_thread_blocked, id=3584]
    0x0378e800 JavaThread "WatchForChangesThread" [_thread_in_native,
    id=3548]
    0x0378e000 JavaThread "File System Tracker" [_thread_blocked,
    id=3816]
    0x0378a800 JavaThread "Progress Cancel Checker" [_thread_blocked,
    id=3960]
    0x03847800 JavaThread "AWT-EventQueue-1" [_thread_blocked, id=440]
    0x0382b400 JavaThread "timed reference disposer" [_thread_blocked,
    id=3544]
    0x0335e000 JavaThread "Periodic tasks thread" [_thread_blocked,
    id=3624]
    0x0335bc00 JavaThread "SocketListenerThread" [_thread_in_native,
    id=3728]
    0x0335b400 JavaThread "SocketListenerThread" [_thread_in_native,
    id=2832]
    0x03312000 JavaThread "MessageDeliveryThread" [_thread_blocked,
    id=2688]
    0x032fb800 JavaThread "AWT-Windows" daemon [_thread_in_native,
    id=3608]
    0x032fb000 JavaThread "AWT-Shutdown" [_thread_blocked, id=2896]
    0x032f7c00 JavaThread "Java2D Disposer" daemon [_thread_blocked,
    id=2380]
    0x03217400 JavaThread "Lock thread" [_thread_in_native, id=3804]
    0x031a4c00 JavaThread "timed reference disposer" [_thread_blocked,
    id=3944]
    0x02e73000 JavaThread "Exe4JStartupThread" daemon [_thread_blocked,
    id=2356]
    0x02e1e400 JavaThread "Low Memory Detector" daemon [_thread_blocked,
    id=752]
    0x02e19800 JavaThread "CompilerThread0" daemon [_thread_blocked,
    id=1428]
    0x02e18400 JavaThread "Attach Listener" daemon [_thread_blocked,
    id=320]
    0x02e17800 JavaThread "Signal Dispatcher" daemon [_thread_blocked,
    id=2456]
    0x02e08000 JavaThread "Finalizer" daemon [_thread_blocked, id=2496]
    0x02e03c00 JavaThread "Reference Handler" daemon [_thread_blocked,
    id=2560]
    0x003e7000 JavaThread "main" [_thread_blocked, id=4036]

    Other Threads:
    0x02e00800 VMThread [id=2492]
    0x02e1fc00 WatcherThread [id=2592]

    VM state:not at safepoint (normal execution)

    VM Mutex/Monitor currently owned by a thread: None

    Heap
    def new generation total 3776K, used 885K [0x10010000, 0x10420000,
    0x10ed0000)
    eden
    [error occurred during error reporting, step 190, id 0xc0000092]

    Dynamic libraries:
    0x00400000 - 0x00490000 E:\Program Files\JetBrains\IntelliJ IDEA
    7.0.1\bin\idea.exe
    0x7c900000 - 0x7c9b0000 C:\WINDOWS\system32\ntdll.dll
    0x7c800000 - 0x7c8f5000 C:\WINDOWS\system32\kernel32.dll
    0x77dd0000 - 0x77e6b000 C:\WINDOWS\system32\ADVAPI32.DLL
    0x77e70000 - 0x77f02000 C:\WINDOWS\system32\RPCRT4.dll
    0x77fe0000 - 0x77ff1000 C:\WINDOWS\system32\Secur32.dll
    0x77f10000 - 0x77f57000 C:\WINDOWS\system32\GDI32.dll
    0x7e410000 - 0x7e4a0000 C:\WINDOWS\system32\USER32.dll
    0x77c10000 - 0x77c68000 C:\WINDOWS\system32\msvcrt.dll
    0x7c9c0000 - 0x7d1d5000 C:\WINDOWS\system32\SHELL32.DLL
    0x77f60000 - 0x77fd6000 C:\WINDOWS\system32\SHLWAPI.dll
    0x773d0000 - 0x774d3000 C:\WINDOWS\WinSxS
    \x86_Microsoft.Windows.Common-
    Controls_6595b64144ccf1df_6.0.2600.2982_x-ww_ac3f9c03\comctl32.dll
    0x5d090000 - 0x5d12a000 C:\WINDOWS\system32\comctl32.dll
    0x74720000 - 0x7476b000 C:\WINDOWS\system32\MSCTF.dll
    0x10000000 - 0x1000f000 C:\WINDOWS\system32\FRXHDLL.DLL
    0x6d870000 - 0x6dab9000 e:\progra~1\jetbra~1\intell~1.1\jre\jre\bin
    \client\jvm.dll
    0x76b40000 - 0x76b6d000 C:\WINDOWS\system32\WINMM.dll
    0x7c340000 - 0x7c396000 E:\Program Files\JetBrains\IntelliJ IDEA
    7.0.1\bin\MSVCR71.dll
    0x009b0000 - 0x009c0000 C:\WINDOWS\system32\ctagent.dll
    0x605d0000 - 0x605d9000 C:\WINDOWS\system32\mslbui.dll
    0x6d3c0000 - 0x6d3c8000 e:\progra~1\jetbra~1\intell~1.1\jre\jre\bin
    \hpi.dll
    0x77120000 - 0x771ab000 C:\WINDOWS\system32\OLEAUT32.DLL
    0x774e0000 - 0x7761d000 C:\WINDOWS\system32\ole32.dll
    0x76bf0000 - 0x76bfb000 C:\WINDOWS\system32\PSAPI.DLL
    0x6d820000 - 0x6d82c000 e:\progra~1\jetbra~1\intell~1.1\jre\jre\bin
    \verify.dll
    0x6d460000 - 0x6d47f000 e:\progra~1\jetbra~1\intell~1.1\jre\jre\bin
    \java.dll
    0x6d860000 - 0x6d86f000 e:\progra~1\jetbra~1\intell~1.1\jre\jre\bin
    \zip.dll
    0x6d620000 - 0x6d633000 E:\Program Files\JetBrains\IntelliJ IDEA
    7.0.1\jre\jre\bin\net.dll
    0x71ab0000 - 0x71ac7000 C:\WINDOWS\system32\WS2_32.dll
    0x71aa0000 - 0x71aa8000 C:\WINDOWS\system32\WS2HELP.dll
    0x71a50000 - 0x71a8f000 C:\WINDOWS\system32\mswsock.dll
    0x662b0000 - 0x66308000 C:\WINDOWS\system32\hnetcfg.dll
    0x71a90000 - 0x71a98000 C:\WINDOWS\System32\wshtcpip.dll
    0x6d0b0000 - 0x6d273000 E:\Program Files\JetBrains\IntelliJ IDEA
    7.0.1\jre\jre\bin\awt.dll
    0x73000000 - 0x73026000 C:\WINDOWS\system32\WINSPOOL.DRV
    0x76390000 - 0x763ad000 C:\WINDOWS\system32\IMM32.dll
    0x6d360000 - 0x6d3b3000 E:\Program Files\JetBrains\IntelliJ IDEA
    7.0.1\jre\jre\bin\fontmanager.dll
    0x03590000 - 0x03599000 E:\Program Files\JetBrains\IntelliJ IDEA
    7.0.1\bin\focuskiller.dll
    0x76f20000 - 0x76f47000 C:\WINDOWS\system32\DNSAPI.dll
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    VM Arguments:
    jvm_args: -
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    Launcher Type: generic

    Environment Variables:
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    USERNAME=ramon
    OS=Windows_NT
    PROCESSOR_IDENTIFIER=x86 Family 15 Model 2 Stepping 7, GenuineIntel



    --------------- S Y S T E M ---------------

    OS: Windows XP Build 2600 Service Pack 2

    CPU:total 1 (1 cores per cpu, 2 threads per core) family 15 model 2
    stepping 7, cmov, cx8, fxsr, mmx, sse, sse2, ht

    Memory: 4k page, physical 1047556k(425676k free), swap
    2524192k(2063264k free)

    vm_info: Java HotSpot(TM) Client VM (1.6.0_02-b05) for windows-x86,
    built on Jun 14 2007 15:45:56 by "java_re" with unknown MS VC++:1310
    Ramon F Herrera, Nov 11, 2007
    #12
  13. Ramon F Herrera wrote:
    >> > Given the weaknesses of Swing, which in addition to being thread-unsafe

    ...
    >> > has bugs that continuously crash the JRE in 1.6,

    >
    >> What bugs are those?

    >
    >The bug(s) appears in Java 6 + Swing + WinXP. The easiest way to
    >trigger it is with the file chooser, but other controls (such as a
    >"Next" button) can trigger it too.
    >
    >See crash dump below.

    (big snip)

    O..K.
    1) Have you got a (simple) source that causes that behaviour?
    2) Is it attempting to do this from outside* the EDT?
    * A thread other than the EDT.

    --
    Andrew Thompson
    http://www.athompson.info/andrew/

    Message posted via http://www.javakb.com
    Andrew Thompson, Nov 11, 2007
    #13
  14. On Nov 10, 11:54 pm, "Andrew Thompson" <u32984@uwe> wrote:
    > Ramon F Herrera wrote:
    > >> > Given the weaknesses of Swing, which in addition to being thread-unsafe

    > ..
    > >> > has bugs that continuously crash the JRE in 1.6,

    >
    > >> What bugs are those?

    >
    > >The bug(s) appears in Java 6 + Swing + WinXP. The easiest way to
    > >trigger it is with the file chooser, but other controls (such as a
    > >"Next" button) can trigger it too.

    >
    > >See crash dump below.

    >
    > (big snip)
    >
    > O..K.
    > 1) Have you got a (simple) source that causes that behaviour?
    > 2) Is it attempting to do this from outside* the EDT?
    > * A thread other than the EDT.
    >



    Never mind, Andrew... They just fixed my bug!! Finally! I don't know
    if it was some two dozen bug reports that I submitted, or all the
    winning and bitching in this NG and others.

    Bug ID: 6522704
    http://bugs.sun.com/view_bug.do?bug_id=6522704

    (at least that bug seems very much like mine).

    The fix hasn't made it to the public JRE, but it is in the latest
    early release:

    https://jdk6.dev.java.net/

    -Ramon
    Ramon F Herrera, Nov 11, 2007
    #14
  15. Ramon F Herrera

    Guest

    Question about javax.swing example

    On Nov 10, 6:04 pm, "Andrew Thompson" <u32984@uwe> wrote:
    > Lew wrote:
    >
    > .
    >
    > >> frame.setVisible(true);

    >
    > ><http://java.sun.com/javase/6/docs/api/javax/swing/package-summary.htm...>

    >
    > I sometimes wonder 'What could possess people to use
    > methods deprecated in 1.2?'.
    >
    > One source is the unmaintained Sun Java Tutorial codes
    > that use it, and apparently another is the Java 6.0 package
    > docs., from which this example is lifted.
    >
    > <snippet>
    > ..
    > public static void main(final String[] args) {
    > // Schedule a job for the event-dispatching thread:
    > // creating and showing this application's GUI.
    > SwingUtilities.invokeLater(new Runnable() {
    > public void run() {
    > new MyApp(args).show();
    > }
    > });}
    >
    > </snippet>
    >
    > .Sheesh!


    Is this a good or bad example? If bad, what is wrong with it?

    Eugene
    , Nov 11, 2007
    #15
  16. Re: Question about javax.swing example

    wrote:
    ...
    >Is this a good or bad example?


    Bad.

    > If bad, what is wrong with it?


    <sscce>
    import javax.swing.*;

    class MyApp extends JFrame {

    MyApp(String[] args) {}

    public static void main(final String[] args) {
    // Schedule a job for the event-dispatching thread:
    // creating and showing this application's GUI.
    SwingUtilities.invokeLater(new Runnable() {
    public void run() {
    new MyApp(args).show();
    }
    });
    }
    }
    </sscce>

    D:\>javac MyApp.java

    Note: D:\MyApp.java uses or overrides a deprecated API.
    Note: Recompile with -Xlint:deprecation for details.

    D:\>javac -Xlint:deprecation MyApp.java
    MyApp.java:13: warning: [deprecation] show() in
    java.awt.Window has been deprecated
    new MyApp(args).show();
    ^
    1 warning

    Which, when we check the JDocs indicates..
    Deprecated. As of JDK version 1.5, replaced by setVisible(boolean).

    When I stated that though, I (again) mistook it for the
    Component.show() method deprecated in 1.1.

    Either way, it is deprecated, and has been for the last
    two Java releases.

    So - it is bad for showing deprecated code in the package docs
    of (a major part of) the official documentation for the language.

    --
    Andrew Thompson
    http://www.athompson.info/andrew/

    Message posted via JavaKB.com
    http://www.javakb.com/Uwe/Forums.aspx/java-general/200711/1
    Andrew Thompson, Nov 11, 2007
    #16
  17. Ramon F Herrera

    Guest

    Re: Question about javax.swing example

    On Nov 11, 1:10 pm, "Andrew Thompson" <u32984@uwe> wrote:
    > wrote:
    >
    > ..
    >
    > >Is this a good or bad example?

    >
    > Bad.
    >
    > > If bad, what is wrong with it?

    >
    > <sscce>
    > import javax.swing.*;
    >
    > class MyApp extends JFrame {


    I even more confused now. Where does your sscce come from? I do not
    see any references to JFrame in the example on
    http://java.sun.com/javase/6/docs/api/javax/swing/package-summary.html#package_description

    Eugene
    , Nov 11, 2007
    #17
  18. Ramon F Herrera

    Mark Space Guest

    Re: Question about javax.swing example

    wrote:

    > I even more confused now. Where does your sscce come from? I do not
    > see any references to JFrame in the example on
    > http://java.sun.com/javase/6/docs/api/javax/swing/package-summary.html#package_description



    Here's cut and paste from that link:
    -----
    public class MyApp implements Runnable {
    public void run() {
    // Invoked on the event dispatching thread.
    // Construct and show GUI.
    }

    public static void main(String[] args) {
    SwingUtilities.invokeLater(new MyApp(args));
    }
    }
    -----
    See the comment where it says "GUI?" That means JFrame and friends. Try
    clicking on the link at the bottom of that page where it says "Swing
    Tutorial."
    Mark Space, Nov 11, 2007
    #18
  19. Ramon F Herrera

    Guest

    Re: Question about javax.swing example

    On Nov 11, 2:51 pm, Mark Space <> wrote:
    > wrote:
    > > I even more confused now. Where does your sscce come from? I do not
    > > see any references to JFrame in the example on
    > >http://java.sun.com/javase/6/docs/api/javax/swing/package-summary.htm...

    >
    > Here's cut and paste from that link:
    > -----
    > public class MyApp implements Runnable {
    > public void run() {
    > // Invoked on the event dispatching thread.
    > // Construct and show GUI.
    > }
    >
    > public static void main(String[] args) {
    > SwingUtilities.invokeLater(new MyApp(args));
    > }}
    >
    > -----
    > See the comment where it says "GUI?" That means JFrame and friends. Try
    > clicking on the link at the bottom of that page where it says "Swing
    > Tutorial."


    I do know what JFrame is. I did click on that link and everything
    there looked just fine to me, including the examples. That is why I
    asked Andrew what was wrong with the example. Andrew then replied
    with a completely different example, in which MyApp extends JFrame.
    The example on the Java docs page MyApp does not extend anything.
    (Well, extends Object, but Object does not have show().)

    Eugene
    , Nov 11, 2007
    #19
  20. Ramon F Herrera

    Daniel Pitts Guest

    Re: Question about javax.swing example

    wrote:
    > On Nov 11, 2:51 pm, Mark Space <> wrote:
    >> wrote:
    >>> I even more confused now. Where does your sscce come from? I do not
    >>> see any references to JFrame in the example on
    >>> http://java.sun.com/javase/6/docs/api/javax/swing/package-summary.htm...

    >> Here's cut and paste from that link:
    >> -----
    >> public class MyApp implements Runnable {
    >> public void run() {
    >> // Invoked on the event dispatching thread.
    >> // Construct and show GUI.
    >> }
    >>
    >> public static void main(String[] args) {
    >> SwingUtilities.invokeLater(new MyApp(args));
    >> }}
    >>
    >> -----
    >> See the comment where it says "GUI?" That means JFrame and friends. Try
    >> clicking on the link at the bottom of that page where it says "Swing
    >> Tutorial."

    >
    > I do know what JFrame is. I did click on that link and everything
    > there looked just fine to me, including the examples. That is why I
    > asked Andrew what was wrong with the example. Andrew then replied
    > with a completely different example, in which MyApp extends JFrame.
    > The example on the Java docs page MyApp does not extend anything.
    > (Well, extends Object, but Object does not have show().)
    >
    > Eugene
    >

    To his defense, the original post only showed the call to
    new MyApp().show(), which looks like it belongs to a JFrame object. In
    a GUI context, thats not an unreasonable assumption. Thats why its
    always best to post a complete SSCCE, rather than only the snippet that
    you think is appropriate.


    --
    Daniel Pitts' Tech Blog: <http://virtualinfinity.net/wordpress/>
    Daniel Pitts, Nov 11, 2007
    #20
    1. Advertising

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