HOW to use InputMap and ActionMap for a JButton ?

Hi,
I used to call the registredKeyBoardAction to deal with JButton keyBoard actions.
It is written in the JavaDoc that this method is deprecated, so I try to use the InputMap and ActionMap as described in this doc without success.
Does anybody has a piece of code that uses
jButton.getInputMap().put(aKeyStroke, aCommand);
jButton.getActionMap().put(aCommmand, anAction);
for the space keyboard key, calling the "foo" actionCommand ?
Thanks.

To be more clear, from the API it seems as if you can set an Action for a keystroke. That is only for the component that you set the keystroke for. So if you set it for a button then it would seem that if it does automatically listen for keystrokes it would only do so when that button has focus. try setting the ActionMap for the window.

Similar Messages

Using InputMap and ActionMap

Referring to an earlier post "Listening to Keystrokes", I already know how to
trap keystrokes in a JPanel. I use this line of code:
this.registerKeyboardAction(this,
      "Exit Task", KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0),
      JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);[/cpde]
However, the documentation for registerKeyboardAction() states:
This method is now obsolete, please use a combination of getActionMap() and
getInputMap() for similiar behavior. For example, to bind the KeyStroke
aKeyStroke to the Action anAction now use:
   component.getInputMap().put(aKeyStroke, aCommand);
component.getActionMap().put(aCommmand, anAction);
Therefore, I attempt to use the getInputMap() and getActionMap() method. Since the documentation for registerKeyboardAction is:public void registerKeyboardAction(ActionListener anAction,
                                   String aCommand,
                                   KeyStroke aKeyStroke,
                                   int aCondition)I thought inside the JPanel, I only have to add these lines:
this.getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), "Exit Task");
this.getActionMap().put("Exit Task", this);Unfortunately, the second line will give compilation errors. Note that the JPanel already implements ActionListener. So I check the documentation for ActionMap and realise that the put() method has two parameters, Object key and Action anAction. It seems that I have to this (a JPanel class) to Action. I thought casting should work since ActionListener is a superinterface to Action, but when I run the program, it will throw a ClassCastException.
Therefore, I ended up implementing ActionListener AND Action. I also have to implement two abstract methods from Action.
Did I miss anything? Does the JPanel really need to implement Action? Why can't I cast an ActionListener class to Action?
Finally, is there a more elegant solution?
Thank you in advance.

Hi,
Hi Shannon,
Another problem... When we use
registerKeyboardAction() for a toolbar button, its
tool tip displays the key stroke used along with any
text you may have set as the tool tip. So if I have
JButton oBtn = new JButton();
oBtn.setIcon(new ImageIcon("SomeIcon.gif"));
oBtn.setToolTipText("Button Tool Tip");
oBtn.registerKeyboardAction(handler, null,
KeyStroke.getKeyStroke(KeyEvent.VK_N,
InputEvent.CTRL_MASK,
true),
JComponent.WHEN_IN_FOCUSED_WINDOW);when I try to view the tool tip, I actually see
"Button Tool Tip Ctrl-N" with the 'Ctrl-N' in a
different font and color than the remaining text. But
when I use the getActionMap() and getInputMap()
methods, this extra information is not seen in the
tool tip.Actually, even using getActionMap() and getInputMap(), you will see the control text. For example, the following is the equivalent of your code using getActionMap() and getInputMap():
oBtn.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(
        KeyStroke.getKeyStroke(KeyEvent.VK_N,
        InputEvent.CTRL_MASK,
        true), "handler");
oBtn.getActionMap().put("handler", new AbstractAction(.....));As you'll see, it also shows the Ctrl-N in the tooltip text.
Since this behavior has been around since the very early days of Swing, I cannot give you the exact reason for it. However, I suspect it was assumed at the time that if a keystroke is added to a component for WHEN_IN_FOCUSED_WINDOW, then that keystroke is one that will activate the component.
Now, can I ask why you're adding this keyboard action to the button? Since its WHEN_IN_FOCUSED_WINDOW, you could add it to the contentpane or the rootpane. It doesn't need to be on the button.
Any help in this case??? My team leader
would prefer a function that is said to be outdated
but works so much better, rather than some new fangled
technique that doesn't give the same help....Just so you know, here's the implementation of registerKeyboardAction:
public void registerKeyboardAction(ActionListener anAction,
                                   String aCommand,
                                   KeyStroke aKeyStroke,
                                   int aCondition) {
    InputMap inputMap = getInputMap(aCondition, true);
    if (inputMap != null) {
        ActionMap actionMap = getActionMap(true);
        ActionStandin action = new ActionStandin(anAction, aCommand);
        inputMap.put(aKeyStroke, action);
            if (actionMap != null) {
                actionMap.put(action, action);
    }What am I trying to say? That the old technique simply uses the new technique internally. And it creates an action per keystroke. You might want to reconsider moving over to the new technique. I'd be happy to address any concerns you might have.
Thanks,
Shannon Hickey (Swing Team)
>
PLEASE HELP!!!
Regards,
Shefali

Using InputMap and ActionMap to detect any key pressed...plz help

Hi,
I am quite new to Java. I have a tiny problem. I wanna put an actionlistener into a JTextField, so it printout something whenever a key is pressed (when the textField is selected).
I can only get it to print if I assign a specific key to pressed...example below (works):
JTextField searchBox = new JTextField();
InputMap imap = searchBox.getInputMap();
ActionMap amap = searchBox.getActionMap();
imap.put(KeyStroke.getKeyStroke(KeyEvent.VK_A, 0), "pressed");
amap.put("pressed", new AbstractAction() {
          public void actionPerformed(ActionEvent e) {
               System.out.println("TYPEEEEEEEEEEEEEEE");
HOWEVER, when i change keystroke to any key pressed, it doesn't work. Example below(doesn't work):
JTextField searchBox = new JTextField();
InputMap imap = searchBox.getInputMap();
ActionMap amap = searchBox.getActionMap();
imap.put(KeyStroke.getKeyStroke(KeyEvent.KEY_PRESSED, 0), "pressed");
amap.put("pressed", new AbstractAction() {
          public void actionPerformed(ActionEvent e) {
               System.out.println("TYPEEEEEEEEEEEEEEE");
Somebody plz helps me. I am really confused how to use KeyEvent.KEY_PRESSED. I thought it would work the same way as KeyEvent.VK_A...if i can't use KEY_PRESSED for that purpose, what KeyEvent do I use?
Thank you very much in advance.

Sounds like you want a KeyListener.
textField.addKeyListener(new KeyListener() {
    public void keyTyped(KeyEvent e) {
        System.out.println("Key typed.");
    public void keyPressed(KeyEvent e) {
        System.out.println("Key pressed.");
    public void keyReleased(KeyEvent e) {
        System.out.println("Key released.");
});See the API documentation for more information.

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Can you give examples for using setCustomizing method for charts?
And i'm have problem with multi-byte language in the chart caption.
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If i'm open component source (chart node) (don't remember file extension)
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How to use servlets and JSP for my homepage?

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sraiper

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Here is a list of hosts that support Java:
http://www.thejspbook.com/resources/category.jsp?id=1005&name=JSP+web+hosting
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InPutMap and actionMap

Hello.
I am currently working on a larger project, where I'd like to make certain JButtons respond to the pressing of certain keys.
To make this simpler, I wrote a smaller program with only one button, just to make the code easier to read.
I've been working with Java for about 8 months now, and still do consider myself a novice, so any help I can get is greatly appreciated.
In the posted example, I have a JButton that changes the text of a JTextField when pressed, however, I'd like to make the button respond when I press "a" on my keyboard,
and for this I should use keybindinds (as far as I've understood). I've tried using inPutMap and actionMap, but haven't had any luck making them work yet.
I added comments in the code, that shows where I'm in doubt. Again, any help is greatly appreciated, and I did read the tutorial at
[http://java.sun.com/docs/books/tutorial/uiswing/misc/keybinding.html]
/* The imports */
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
public class inPutExample extends JFrame implements ActionListener {
    /* Initialization */
    private JButton actionButton;
    private JTextField textField;
    /* My main method */
    public static void main (String[] Args) {
        inPutExample frame = new inPutExample();
        frame.setSize(200,120);
        frame.createGUI();
        frame.setVisible(true);
    /* The interface */
    private void createGUI() {
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        Container window = getContentPane();
        window.setLayout(new FlowLayout());
        /* My button, that needs to respond to a keypress */
        actionButton = new JButton("Press me");
        window.add(actionButton);
        actionButton.addActionListener(this);
        /* The inPutMap for my button.
         In the tutorial, they didn't use
         keyEvent, but simply wrote a letter in quotation marks,
         so I'm a bit confused on that */
        actionButton.getInputMap(JButton.WHEN_IN_FOCUSED_WINDOW)
                .put(KeyStroke.getKeyStroke("a"), actionButton);
        /* The actionMap for my button. I'm confused
         as to what to put after the comma */
        actionButton.getActionMap().put(actionButton, null);
        /* The textfield that allows me to see
         if the button has been pressed */
        textField = new JTextField("Button hasn't been pressed");
        window.add(textField);
    public void actionPerformed(ActionEvent e) {
        Object source = e.getSource();
        /* The action that is performed
         when the button is pressed */
        if (source == actionButton) {
            textField.setText("Button has been pressed");
}Any help or constructive criticism will be appreciated and responded to.
Ulverbeast

Compare you code again to the tutorial:
component.getInputMap().put(KeyStroke.getKeyStroke("F2"),
                            "doSomething");
component.getActionMap().put("doSomething",
                             anAction);
//where anAction is a javax.swing.ActionAlthough using the action button as action command (the 'doSomthing') works, that isn't really a good idea - stick with Strings. The crucial thing missing in the actual action though:
Action action = new AbstractAction("Press me") {
public void actionPerformed(ActionEvent e) {
    textField.setText("Button has been pressed");
button = new JButton(action);
// and put button in action map

How to use protect and protect

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Hi
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Text Elements?
You can try to manage it in print program:
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EXPORTING
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CALL FUNCTION 'WRITE_FORM'
EXPORTING
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How to use multiple VCI strings for lap 1300 and 1200 (option 60) in one pool?

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Hope to you a very happy new year,
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Please remember to rate useful posts, and mark questions as answered

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The expression is checked only for the current MDM session.
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Hope it helps.
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How to find classtype and class for a material.

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which table contains this data.
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Check below sample code. Use this BAPI which will give all info about the class for the material.
DATA:      l_objectkey_imp    TYPE bapi1003_key-object
                                     VALUE IS INITIAL.
CONSTANTS: lc_objecttable_imp TYPE bapi1003_key-objecttable
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             lc_classtype_imp   TYPE bapi1003_key-classtype
                                     VALUE '001',
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                                     VALUE 'FREIGHT_CLASS',
             lc_e               TYPE bapiret2-type VALUE 'E',
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LOOP AT i_deliverydata INTO wa_deliverydata.
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        objecttable_imp       = lc_objecttable_imp
        classtype_imp         = lc_classtype_imp
*   READ_VALUATIONS       =
        keydate               = sy-datum
        language              = sy-langu
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*   ALLOCVALUESCHAR       =
*   ALLOCVALUESCURR       =
*   ALLOCVALUESNUM        =
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Vinod.

How to use Add Query Criteria for the MySQL data Base in Netbeans ?

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When the Query Criteria is add like
SELECT ALL counselors.counselors_id, counselors.first_name, counselors.telephone,counselors.email
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*I am glad I am not the only one who have this problem. Part of issue has been described as above, there are something more in my case.
Whenever I try to call ****_tabRowSet.setObject(1, userDropList.getSeleted()); I got error message as shown below:*
The Java codes are:
public void dropDown1_processValueChange(ValueChangeEvent event) {
Object s = this.dropDown1.getSelected();
try {
this.User_tabDataProvider1.setCursorRow(this.User_tabDataProvider1.findFirst("User_Tab.User_ID", s));
this.getSessionBean1().getTrip_tabRowSet1().setObject(1, s);
this.Trip_tabDataProvider1.refresh();
} catch (Exception e) {
this.log("Error: ", e);
this.error("Error: Cannot select user"+e.getMessage());
SQL statement for Trip_tabRowSet:
SELECT ALL Trip_Tab.Trip_Date,
Trip_Tab.User_ID,
Trip_Tab.Destination
FROM Trip_Tab
WHERE Trip_Tab.User_ID = ?
Error messages are shown below:
phase(RENDER_RESPONSE 6,com.sun.faces.context.FacesContextImpl@5abf3f) threw exception: com.sun.rave.web.ui.appbase.ApplicationException: java.sql.SQLException: No value specified for parameter 1 java.sql.SQLException: No value specified for parameter 1
com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.cleanup(ViewHandlerImpl.java:559)
com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.afterPhase(ViewHandlerImpl.java:435)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:274)
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:397)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:184)
com.sun.webui.jsf.util.UploadFilter.doFilter(UploadFilter.java:240)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:216)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:184)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:216)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:184)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:276)
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:536)
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:240)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:179)
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:73)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:182)
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
com.sun.enterprise.web.VirtualServerPipeline.invoke(VirtualServerPipeline.java:120)
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:939)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:137)
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:536)
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:939)
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:239)
com.sun.enterprise.web.connector.grizzly.ProcessorTask.invokeAdapter(ProcessorTask.java:667)
com.sun.enterprise.web.connector.grizzly.ProcessorTask.processNonBlocked(ProcessorTask.java:574)
com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:844)
com.sun.enterprise.web.connector.grizzly.ReadTask.executeProcessorTask(ReadTask.java:287)
com.sun.enterprise.web.connector.grizzly.ReadTask.doTask(ReadTask.java:212)
com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:252)
com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:75)
tandardWrapperValve[Faces Servlet]: Servlet.service() for servlet Faces Servlet threw exception
java.sql.SQLException: No value specified for parameter 1
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:910)
at com.mysql.jdbc.PreparedStatement.fillSendPacket(PreparedStatement.java:1674)
at com.mysql.jdbc.PreparedStatement.fillSendPacket(PreparedStatement.java:1622)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1332)
at com.sun.sql.rowset.internal.CachedRowSetXReader.readData(CachedRowSetXReader.java:193)
at com.sun.sql.rowset.CachedRowSetXImpl.execute(CachedRowSetXImpl.java:979)
at com.sun.sql.rowset.CachedRowSetXImpl.execute(CachedRowSetXImpl.java:1439)
at com.sun.data.provider.impl.CachedRowSetDataProvider.checkExecute(CachedRowSetDataProvider.java:1274)
at com.sun.data.provider.impl.CachedRowSetDataProvider.setCursorRow(CachedRowSetDataProvider.java:335)
at com.sun.data.provider.impl.CachedRowSetDataProvider.setCursorIndex(CachedRowSetDataProvider.java:306)
at com.sun.data.provider.impl.CachedRowSetDataProvider.getRowCount(CachedRowSetDataProvider.java:639)
at com.sun.webui.jsf.component.TableRowGroup.getRowKeys(TableRowGroup.java:1236)
at com.sun.webui.jsf.component.TableRowGroup.getFilteredRowKeys(TableRowGroup.java:820)
at com.sun.webui.jsf.component.TableRowGroup.getRowCount(TableRowGroup.java:1179)
at com.sun.webui.jsf.component.Table.getRowCount(Table.java:831)
at com.sun.webui.jsf.renderkit.html.TableRenderer.renderTitle(TableRenderer.java:420)
at com.sun.webui.jsf.renderkit.html.TableRenderer.encodeBegin(TableRenderer.java:143)
at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:810)
at com.sun.webui.jsf.component.Table.encodeBegin(Table.java:1280)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:881)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:889)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:889)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:889)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:889)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:889)
at com.sun.faces.application.ViewHandlerImpl.doRenderView(ViewHandlerImpl.java:271)
at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:182)
at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.renderView(ViewHandlerImpl.java:285)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:133)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:244)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:397)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:184)
at com.sun.webui.jsf.util.UploadFilter.doFilter(UploadFilter.java:240)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:216)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:184)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:216)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:184)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:276)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:536)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:179)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:73)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:182)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
at com.sun.enterprise.web.VirtualServerPipeline.invoke(VirtualServerPipeline.java:120)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:939)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:137)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:536)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:939)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:239)
at com.sun.enterprise.web.connector.grizzly.ProcessorTask.invokeAdapter(ProcessorTask.java:667)
at com.sun.enterprise.web.connector.grizzly.ProcessorTask.processNonBlocked(ProcessorTask.java:574)
at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:844)
at com.sun.enterprise.web.connector.grizzly.ReadTask.executeProcessorTask(ReadTask.java:287)
at com.sun.enterprise.web.connector.grizzly.ReadTask.doTask(ReadTask.java:212)
at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:252)
at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:75)
Also when I tried to update my MYSQL connector / J driver to version 5.1.5 from 5.0.5 (NB 5.5.1) and 5.0.7 (NB 6.1), I could not get it work (looooong time to search some JDBC classes and with no response in the end) on both of my Netbean 5.5.1(on PC) and Netbean 6.1(on laptop) IDEs.
Could anybody look into this issue.
Many thanks
Edited by: linqing on Nov 22, 2007 4:48 AM

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