comp.lang.java.programmer http://groups-beta.google.com/group/comp.lang.java.programmer [EMAIL PROTECTED]
Today's topics: * Pausing a Swing Worker Thread? - 1 messages, 1 author http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/d5da19ea5521b080 * struts & restarting Tomcat - 1 messages, 1 author http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/5bee53f53da7265c * Thread for doFilter and service - is it the same ? - 2 messages, 2 authors http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/4d3c0ecd8f126018 * PropertyEditorManager limitation - 1 messages, 1 author http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/125ec183df3a0ef7 * Java native interface problem - 1 messages, 1 author http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/fe91dc0e44d16b9a * Tomcat and classloaders - 1 messages, 1 author http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/9d1677b8e903332e * newbie RMI User - 2 messages, 2 authors http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/af49b3bdfce876e4 * xerces and xalan - 1 messages, 1 author http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/6f2ec969c996f8b1 * writing and reading objects - 3 messages, 3 authors http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/42024eb362a85850 * Java trick - 2 messages, 2 authors http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/bfd25be52dc6a3ad * How to populate a ArrayList FormBean attribute? - 3 messages, 3 authors http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/6b0f599eae252fb0 * Struts Tomcat 5 Taglib issue - 3 messages, 2 authors http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/6fac0a6b8d986f8f * How to incremet IndetAddress / IP numbers - 6 messages, 2 authors http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/94897e32234ceaaf * what u program? - 1 messages, 1 author http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/ee20f99e67fd5410 * simpleDateFormat and April month - 1 messages, 1 author http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/383df9c88dcb10ba * Problem with IE and Applets. - 1 messages, 1 author http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/85712e86df721a37 ========================================================================== TOPIC: Pausing a Swing Worker Thread? http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/d5da19ea5521b080 ========================================================================== == 1 of 1 == Date: Sat, Sep 18 2004 1:19 pm From: "Ann" <[EMAIL PROTECTED]> "xarax" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > "C-man" <[EMAIL PROTECTED]> wrote in message > news:[EMAIL PROTECTED] > > Does anybody out there know how to pause/resume a Swing Worker thread. I > > have implemented my program to be able to cancel the thread by checking if > > it has been interrupted() in my code. but how do I pause the thread. If I > > were to use wait() and notify() how to I implement that? Do I have to add a > > new Function to SwingWorker.java? > > ISTR SwingWorker is an abstract class. You must extend > it with your own methods anyway. You'll have to decide > what it means to pause the thread, since SwingWorker > is supposed to finish its task and then post a Runnable > to the AWT Event Dispatch Thread (using > SwingUtilities.invokeLater(Runnable)) to notify completion. > > -- > ---------------------------- > Jeffrey D. Smith > Farsight Systems Corporation > 24 BURLINGTON DRIVE > LONGMONT, CO 80501-6906 > http://www.farsight-systems.com > z/Debug debugs your Systems/C programs running on IBM z/OS for FREE! > > You could use a flag in your run method. (I did not try to compile this.) loop: if(flag) { try { Thread.sleep(500); // half a second continue loop; } catch(InterruptedException e) {} } ========================================================================== TOPIC: struts & restarting Tomcat http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/5bee53f53da7265c ========================================================================== == 1 of 1 == Date: Sat, Sep 18 2004 1:05 pm From: "William Brogden" <[EMAIL PROTECTED]> On Sat, 18 Sep 2004 16:40:23 GMT, Mike <[EMAIL PROTECTED]> wrote: > > > I'm developing a struts application and the only way I've found for a > change in the action class to be recognized is to restart Tomcat. > > Is there an easier way? > Using the Management Application to restart the application is pretty convenient. Documentation was installed with your copy of Tomcat. Bill -- Using Opera's revolutionary e-mail client: http://www.opera.com/m2/ ========================================================================== TOPIC: Thread for doFilter and service - is it the same ? http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/4d3c0ecd8f126018 ========================================================================== == 1 of 2 == Date: Sat, Sep 18 2004 2:16 pm From: [EMAIL PROTECTED] (Ken Carroll) Can anyone tell me if the doFilter method is called on the same thread as the servlet's service method ? == 2 of 2 == Date: Sat, Sep 18 2004 3:37 pm From: Sudsy <[EMAIL PROTECTED]> Ken Carroll wrote: > Can anyone tell me if the doFilter method is called on the same thread > as the servlet's service method ? I can't. But I have to ask a question in return: does it matter? I would presume (but have no way of knowing without digging into the source) that it wouldn't. A filter merely processes the request or response. According to the javadocs it can choose to: "4. a) Either invoke the next entity in the chain using the FilterChain object (chain.doFilter()), 4. b) or not pass on the request/response pair to the next entity in the filter chain to block the request processing" There's no obligation on the part of the servlet container to run filters in the same thread as the requested servlet. Obviously, if a request filter opts to discontinue processing then the servlet service method will never be invoked in the first place! So why would you care? ========================================================================== TOPIC: PropertyEditorManager limitation http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/125ec183df3a0ef7 ========================================================================== == 1 of 1 == Date: Sat, Sep 18 2004 2:35 pm From: "Adam P. Jenkins" <[EMAIL PROTECTED]> The few times I've thought of using PropertyEditors, I've run into what seems like a serious limitation of PropertyEditorManager. I'm curious if other people find this to be a serious limitation or not. PropertyEditorManager allows PropertyEditors to be associated with particular property types. However it does not allow a PropertyEditor to be associated with a specific property of a bean class. That is, I can register a PropertyEditor to be used for all properties of type java.lang.String, but I can't register a PropertyEditor to be used for a specific property of a specific bean class, which happens to be of type String. Suppose I have a Professor bean class which has a "department" property of type java.lang.String, which must be set to one of a list of department names. I'd like the PropertyEditor for this property to return an array of allowable department names from its getTags() method. However PropertyEditorManager gives me no way to implement this, other than changing the PropertyEditor for all java.lang.String properties, or using a special Department class as the property type so that I can register a PropertyEditor for it. I'm sure you can come up with other scenarios where you'd want to specify a specialized customComponent or paintValue method for a specific bean property, but not have it apply to all properties of that type in any bean. Basically I'd like PropertyEditorManager to have these methods: void registerEditor(Class beanType, String propertyName, Class editorClass); PropertyEditor findEditor(Class beanType, String propertyName); To me this pretty much makes PropertyEditorManager useless for any real application. Maybe for a toy application or something for internal use only I'd be willing to use the same editor type for all bean properties of type String or int or whatever, but normally I want to be able to specify a tags list or custom component for at least some bean properties. Just wondering how useful others find PropertyEditorManager to be in its present form. Thanks for any comments. Adam ========================================================================== TOPIC: Java native interface problem http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/fe91dc0e44d16b9a ========================================================================== == 1 of 1 == Date: Sat, Sep 18 2004 2:36 pm From: [EMAIL PROTECTED] (Kristian Karl) Hi, Why does not the code below work... I'm running int with j2re1.4.2_05, on a Windows 2000 box. The output is: Library loaded java.lang.UnsatisfiedLinkError: MessageBoxA public class ShowMsgBox extends Object { static { System.load("C:/WINNT/system32/USER32.DLL"); } public static void main(String[] args) { try { ShowMsgBox msg = new ShowMsgBox(); System.out.println( "Library loaded" ); msg.MessageBoxA( 0, "Created by the MessageBox() Win32 func", "Thinking in Java", 0); } catch (UnsatisfiedLinkError e) { System.out.println( e ); } } private native int MessageBoxA(int hwndOwner, String text, String title, int fuStyle); } /Regards Kristian ========================================================================== TOPIC: Tomcat and classloaders http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/9d1677b8e903332e ========================================================================== == 1 of 1 == Date: Sat, Sep 18 2004 2:48 pm From: [EMAIL PROTECTED] (Albretch) I think there are a number of issues that relate to your architecture in general, other than the 'Time zones' and 'virtual hosts' (relatively innocuous) issues you had 1._ Time zones in a server: I wondered what would be the technical or cultural meaning of it in an open-to-the-Net server running 24/7 anyway. All servers should use the same time zone preferably, UGT. I think, even internally, OSs spend time doing these translations, and everyone should hit your server from different time zones anyway, right? Not only that, but you should be glad you had a clear 'error' you could notice right away. There are a number of relatively subtle issues that relate to your flawed architecture, too. The next natural/consequent' step to using Time zones' in a server would be using day light savings' (I am not bush-it-ting you I have seen this out there), and say you use versioning or an application that internally/silently uses it (like Hibernate) or some kind of 'optimistic'-concurrency one. When these applications compare time differences they might go crazy with their negative values they get (many of them just care about time differences) and even throw errors and/or Exceptions that would be hard to debug/understand without the right mindset. Java gets its System.currentTimeMillis and java.util.Date data right off the OS . . . so by now you could see my point 2._ Classloaders: and their relationship with the CATALINA_BASE setting for each 'virtually' hosted server. Web developers should always- (do not trust different versions of the same app server) test the priority of the loading sequences just by placing the same class in different directories, with different markers (like the actual directory it is loaded from) and asking the class what its classloader was (check out java.lang.Class) you could have seen what your prob was clear and loud' 3._ Your code: I could see you rolling up your sleeves :-) Why would anyone conceive/code an open-to-the-world server application wired to a 'time zone'? Specially if java's libraries are so dirt easy to i18n'ed and l10n'ed? AM ========================================================================== TOPIC: newbie RMI User http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/af49b3bdfce876e4 ========================================================================== == 1 of 2 == Date: Sat, Sep 18 2004 3:15 pm From: "paul.foreman" <[EMAIL PROTECTED]> Andrew, I have trimmed my repy and changed my question a little, based on more information. >>>> I have just got an applet I am developing to use the RMI method to get >>>> information from a server. > > Can we see you applet? What is the URL? > If it is on a restricted intranet, can you haul > a failing example of it out onto a public URL? The applet is not on the internet yet - I am not yet sure how I am going to do this. I hope we can progress without it being directly visible. >>>> ..for each of the >>>> methods that needed the remote information. So there were several >>>> methods >>>> which invoked the RMI method Naming.lookup. All seemed well until I >>>> tried >>>> to >>>> use the applet in a browser. When I did this I got a 'notinited' >>>> message The message in the Java Console was: "Problem with RMI URL java.rmi.UnmarshalException: error unmarshalling return; nested exception is: java.lang.ClassNotFoundException: access to class loader denied" The first few lines of the stack trace were: Dump thread stack ... ---------------------------------------------------- Full thread dump Java HotSpot(TM) Client VM (1.4.1_02-b06 mixed mode): "Java2D Disposer" daemon prio=10 tid=0x0B34FDB8 nid=0x8d4 in Object.wait() [b67f000..b67fd8c] at java.lang.Object.wait(Native Method) - waiting on <10843438> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(Unknown Source) - locked <10843438> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(Unknown Source) at sun.java2d.Disposer.run(Unknown Source) at java.lang.Thread.run(Unknown Source) "AWT-EventQueue-0" prio=7 tid=0x0B2F31D8 nid=0xb58 in Object.wait() [b97f000..b97fd8c] at java.lang.Object.wait(Native Method) - waiting on <10801A18> (a java.awt.EventQueue) at java.lang.Object.wait(Unknown Source) at java.awt.EventQueue.getNextEvent(Unknown Source) - locked <10801A18> (a java.awt.EventQueue) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source) When I ran the applet under JBuilder4 all worked fine. When I tried to run the applet from a browser I now obtain the message above. It would appear that the client is not finding the Class files in the Server application. Even though this does not appear to be a problem when running under JBuilder. > I have not dabbled in RMI. Hopefully an > RMI guru (or at least somebody more exp. > than myself) will jump right in. > >> Is there any way of getting more information from my PC on why the applet >> is >> failing? > > Well.. You know about the Java console? > Tools | Sun Java Console > ..if you are printing stack traces, it should > give you the exact line number the problem occurs. > > Now.. did you notice how I cleverly answered your > questions by bombarding you with many more? > Almost makes me seem like I have a > clue what is going on here. ;-) > Andrew I do appreciate your help - answering your questions has helped me to understand a bit more. Especially the existence of the Java console. == 2 of 2 == Date: Sat, Sep 18 2004 10:01 pm From: Andrew Thompson <[EMAIL PROTECTED]> On Sat, 18 Sep 2004 22:15:15 +0000 (UTC), paul.foreman wrote: >>>>> RMI method Naming.lookup. All seemed well until I tried to >>>>> use the applet in a browser. When I did this I got a 'notinited' >>>>> message > The message in the Java Console was: "Problem with RMI URL > java.rmi.UnmarshalException: error unmarshalling return; nested exception > is: java.lang.ClassNotFoundException: access to class loader > denied" Is you applet signed? An applet running in JBuilder (or applet viewer) has greater permission to access the local file-system than one operating in a browser. -- Andrew Thompson http://www.PhySci.org/codes/ Web & IT Help http://www.PhySci.org/ Open-source software suite http://www.1point1C.org/ Science & Technology http://www.lensescapes.com/ Images that escape the mundane ========================================================================== TOPIC: xerces and xalan http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/6f2ec969c996f8b1 ========================================================================== == 1 of 1 == Date: Sat, Sep 18 2004 3:34 pm From: "Mike Schilling" <[EMAIL PROTECTED]> Xerces is an XML parser. Xalan is an implementation of XPath and XSLT. Xalan can work with any JAXP-compliant XML parser. ========================================================================== TOPIC: writing and reading objects http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/42024eb362a85850 ========================================================================== == 1 of 3 == Date: Sat, Sep 18 2004 3:47 pm From: "Mike Schilling" <[EMAIL PROTECTED]> "Michael Borgwardt" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > > In think Paul is overstating the case, but you should be aware that > you will run into problems reading the serialized data when you > change the definitions of the classes you've serialized. I agree with Paul. Object graph serialization and deserialization, is, like synchronization, an area where Java makes a complex problem seem much simpler than it is. Successfully persisting object graphs requires a level of commitment to understand how serialization works design persistent classes sensibly accept that persisting a class imposes large constraints on how that class can evolve plan for dealing with changes to persistent class definitions Good Lord, how many times have we seen, right here on c.l.j.p, people complaining that their files have gone corrupt, and by the way, they changed their package names, that doesn't matter, does it? Unless you're willing to really master the subject, stay away from serializing objects into files. Just create data files, the old-fashioned way. == 2 of 3 == Date: Sat, Sep 18 2004 9:55 pm From: Andrew Thompson <[EMAIL PROTECTED]> On Sun, 19 Sep 2004 01:11:49 +0530, Madhur Ahuja wrote: > Andrew Thompson <[EMAIL PROTECTED]> wrote: >> On Sat, 18 Sep 2004 16:59:44 +0530, Madhur Ahuja wrote: >> >>> The code that am using is: >> >> No it is *not* the code you are using! >> >> The code you provided does not compile. .. > OK, I'll post the complete code. I trimmed the code for you > so that you may be able to easily grasp what is done in the code. Is this a joke Madhur? Your second code has compilation errors as well! Try things like.. > public static void main(String args[]) > > > serial6 sr = new serial6(1); If you need to pursue this further, please have a close look over this document that describes how to make examples for others.. <http://www.physci.org/codes/sscce.jsp> -- Andrew Thompson http://www.PhySci.org/codes/ Web & IT Help http://www.PhySci.org/ Open-source software suite http://www.1point1C.org/ Science & Technology http://www.lensescapes.com/ Images that escape the mundane == 3 of 3 == Date: Sat, Sep 18 2004 10:31 pm From: "Madhur Ahuja" <[EMAIL PROTECTED]> Andrew Thompson <[EMAIL PROTECTED]> wrote: > On Sun, 19 Sep 2004 01:11:49 +0530, Madhur Ahuja wrote: >> Andrew Thompson <[EMAIL PROTECTED]> wrote: >>> On Sat, 18 Sep 2004 16:59:44 +0530, Madhur Ahuja wrote: >>> >>>> The code that am using is: >>> >>> No it is *not* the code you are using! >>> >>> The code you provided does not compile. > .. >> OK, I'll post the complete code. I trimmed the code for you >> so that you may be able to easily grasp what is done in the code. > > Is this a joke Madhur? Your second code > has compilation errors as well! I can't believe it has. I simple copy pasted from the actual source file. I even verified compiling it before posting. > Try things like.. >> public static void main(String args[]) >> >> >> serial6 sr = new serial6(1); > > If you need to pursue this further, please have > a close look over this document that describes > how to make examples for others.. > <http://www.physci.org/codes/sscce.jsp> Anyway, I have solved the problem as indicated in other posts and I'll take care in the future. -- Madhur Ahuja [madhur<underscore>ahuja<at>yahoo<dot>com] Homepage & other stuff http://madhur.netfirms.com ========================================================================== TOPIC: Java trick http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/bfd25be52dc6a3ad ========================================================================== == 1 of 2 == Date: Sat, Sep 18 2004 4:03 pm From: "Thomas G. Marshall" <[EMAIL PROTECTED]> Lee Fesperman coughed up: > Thomas G. Marshall wrote: >> >> Lee Fesperman coughed up: >>> Thomas G. Marshall wrote: >>>> >>>> Michael Borgwardt coughed up: >>>>> Thomas G. Marshall wrote: >>>>>> The reason it works is that a variable to a class object of any >>>>>> value can still yield access to a static. >>>>> >>>>> Actually, there is no object involved at any point. The *compiler* >>>> >>>> [snip] >>>> >>>> You're right. What I really should have said was a "variable of >>>> reference of any value", not object. >>>> >>>> Basically, given the declaration & definition: >>>> >>>> {Type} {Variable Name} = {reference}; >>>> >>>> *Regardless* of the value of {reference}, >>>> >>>> {reference}.{static id} >>>> >>>> yields the same thing as >>>> >>>> {Type}.{static id} >>> >>> It's simply a reference, you don't need a variable at all. It is any >>> expression producing a reference. It could be a method returning a >>> reference or even: >>> >>> ((Type) null).{static id} >>> >>> The static can be a field or a method. >> >> Your example is good, and it's one I've used before, except that your >> explanation is missing how the thing is declared, which is why it >> isn't about the reference. >> >> The variable is declared with a type somewhere, or passed in as a >> formal parameter of some type, etc. It is that type that determines >> the static used, not the actual polymorphised object underneath. > > You completely missed my point. It is about the reference. A variable > is not necessary. There is no 'thing' declared. Try these: > > new String().valueOf("*"); > > "".valueOf("*"); > > ((String) null).valueOf("*"); > > String.valueOf("").valueOf("*"); > > There are no variables involved. These all use reference expressions. > The compiler uses the type of the reference expression to call the > appropriate static method -- String.valueOf(). To me, when someone says "it's about the reference", they are in effect saying that it's about the object that that references points to, since that's what a reference does. Given a reference to an object instance of the class Sub, you still do not know what static method is going to be called when you see this: sub.staticmethod() It would be different if the variable had been declared as Super sub = new Sub(); than if it were Sub sub = new Sub(); So the reference is the same in both cases (a sub object), but it is the class that it is declared as (or casted to as you point out) that matters. The reference by itself isn't enough. The compiler looks to see which class is used. -- "So I just, uh... I just cut them up like regular chickens?" "Sure, just cut them up like regular chickens." == 2 of 2 == Date: Sat, Sep 18 2004 10:46 pm From: Joona I Palaste <[EMAIL PROTECTED]> Thomas G. Marshall <[EMAIL PROTECTED]> scribbled the following: > Lee Fesperman coughed up: >> You completely missed my point. It is about the reference. A variable >> is not necessary. There is no 'thing' declared. Try these: >> >> new String().valueOf("*"); >> >> "".valueOf("*"); >> >> ((String) null).valueOf("*"); >> >> String.valueOf("").valueOf("*"); >> >> There are no variables involved. These all use reference expressions. >> The compiler uses the type of the reference expression to call the >> appropriate static method -- String.valueOf(). > To me, when someone says "it's about the reference", they are in effect > saying that it's about the object that that references points to, since > that's what a reference does. > Given a reference to an object instance of the class Sub, you still do not > know what static method is going to be called when you see this: > sub.staticmethod() > It would be different if the variable had been declared as > Super sub = new Sub(); > than if it were > Sub sub = new Sub(); > So the reference is the same in both cases (a sub object), but it is the > class that it is declared as (or casted to as you point out) that matters. > The reference by itself isn't enough. The compiler looks to see which class > is used. Yes, that's true. But look at this: Super sub = new Sub(); sub.staticmethod(); /* calls Super.staticmethod() */ ((Sub)sub).staticmethod(); /* calls Sub.staticmethod() */ The same would work if sub==null. (I don't know if it would work if sub were a Super object.) Notice that the type of the variable sub is Super, yet the second line calls Sub.staticmethod(). This shows that it is the reference value (Sub)sub, not the variable sub, that controls which class is used. -- /-- Joona Palaste ([EMAIL PROTECTED]) ------------- Finland --------\ \-- http://www.helsinki.fi/~palaste --------------------- rules! --------/ "I said 'play as you've never played before', not 'play as IF you've never played before'!" - Andy Capp ========================================================================== TOPIC: How to populate a ArrayList FormBean attribute? http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/6b0f599eae252fb0 ========================================================================== == 1 of 3 == Date: Sat, Sep 18 2004 5:40 pm From: [EMAIL PROTECTED] (John Raab) I had a problem using ArrayLists with Struts ActionForms as well. I was always getting ArrayIndexOutOfBounds exceptions because unlike regular arrays, Struts does NOT set ArrayLists to the proper size to accept the incoming indexed form parameters. Here's my "hack". I can now use ArrayLists in ActionForms without a problem. Obviously like the poster before me said, you must set the proper index setters and getters in your ActionForm as well. Instead of ArrayList use ArrayListCustom (for lack of a better name) to ensure the list is sized properly during Strut's auto-population process. public class ArrayListCustom extends ArrayList { /** * Overrides parent's set method to ensure that ArrayList * is always large enough to store the element index being set. * Did this to overcome issue with Struts Action form population * mechanism which works fine with regular arrays but not with ArrayLists. * */ public Object set(int index, Object element){ if(index<this.size()){ return super.set(index,element); }else{ //add "" elements to ArrayList until it reaches proper size int num2add= index+1-this.size(); for(int i=0;i<num2add;i++){ this.add(""); } return super.set(index,element); } } } Sudsy <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>... > Eduardo wrote: > <snip> > > The question is: How can I populate my actionForm from an HTML form? > > How can I access the add method? > > You can't. Seriously, Struts looks for setXXX methods only. You > should be using indexed properties. Check the javadocs for details. > Hint: For a field named phoneNumber, you should have a method with > the signature setPhoneNumber( int index, Object o ). You also might > wish to read an article I've written on the subject. It can be found > here: <http://www.sudsy.net/technology/struts-advanced.html> == 2 of 3 == Date: Sat, Sep 18 2004 6:33 pm From: Sudsy <[EMAIL PROTECTED]> John Raab wrote: > I had a problem using ArrayLists with Struts ActionForms as well. I > was always getting ArrayIndexOutOfBounds exceptions because unlike > regular arrays, Struts does NOT set ArrayLists to the proper size to > accept the incoming indexed form parameters. > > Here's my "hack". <snip> Then you obviously didn't read the article I cited. It demonstrates the same technique albeit in a while loop. You try to save others some time and trouble by documenting your experiences and where does it get you? (sigh) == 3 of 3 == Date: Sat, Sep 18 2004 10:22 pm From: Andrew Thompson <[EMAIL PROTECTED]> On Sat, 18 Sep 2004 21:33:03 -0400, Sudsy wrote: > Then you obviously didn't read the article I cited. It demonstrates > the same technique I have experienced that feeling.. > ..You try to save others > some time and trouble by documenting your experiences and where does > it get you? (sigh) (chuckles) My 'success rate' for today's replies to my URL's is running about (waggles hand) 50/50. -- Andrew Thompson http://www.PhySci.org/codes/ Web & IT Help http://www.PhySci.org/ Open-source software suite http://www.1point1C.org/ Science & Technology http://www.lensescapes.com/ Images that escape the mundane ========================================================================== TOPIC: Struts Tomcat 5 Taglib issue http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/6fac0a6b8d986f8f ========================================================================== == 1 of 3 == Date: Sat, Sep 18 2004 6:58 pm From: "WJ" <[EMAIL PROTECTED]> I just installed tomcat 5 (5.0.27) and am deploying a simple app. The jsp's are erroring out saying it cannot find the tag libs defined. Here is how I am including the tags at the top of the JSP's: <%@ taglib uri="/tlds/struts-html.tld" prefix="html" %> <%@ taglib uri="/tlds/struts-bean.tld" prefix="bean" %> <%@ taglib uri="/tlds/struts-tiles.tld" prefix="tiles" %> <%@ taglib uri="/tlds/struts-logic.tld" prefix="logic" %> My entries in web.xml are thus: <taglib> <taglib-uri>/tags/struts-bean</taglib-uri> <taglib-location>WEB-INF/tlds/struts-bean.tld</taglib-location> </taglib> . . . When I deploy the war file to the webapps dir, Tomcat expodes the war, just as the docs say it would. When I re-deploy, I'm stopping the server, removing the old war and dir structure. However, when I load the jsp, I get the following error: org.apache.jasper.JasperException: /home.jsp(1,1) File "/tlds/struts-html.tld" not found I've looked through the example code that came with Tomcat. While their web.xml has references to the tlds, they seem to reference tag files instead of the uri in their example jsps. This code *does* work in Weblogic 8.1. I've done some google searches and found others who have posted similar questions about this, but none of the posts have replies that work. Any ideas would be appreciated. == 2 of 3 == Date: Sat, Sep 18 2004 8:39 pm From: Sudsy <[EMAIL PROTECTED]> WJ wrote: > I just installed tomcat 5 (5.0.27) and am deploying a simple app. The jsp's > are erroring out saying it cannot find the tag libs defined. > > Here is how I am including the tags at the top of the JSP's: > > <%@ taglib uri="/tlds/struts-html.tld" prefix="html" %> > <%@ taglib uri="/tlds/struts-bean.tld" prefix="bean" %> <snip> This specifies the URI as "/tlds/struts-bean.tld" > My entries in web.xml are thus: > > <taglib> > <taglib-uri>/tags/struts-bean</taglib-uri> > <taglib-location>WEB-INF/tlds/struts-bean.tld</taglib-location> > </taglib> Here you define a URI of "/tags/struts-bean". Did you not realize that they have to match? Change one or the other. == 3 of 3 == Date: Sat, Sep 18 2004 8:41 pm From: "WJ" <[EMAIL PROTECTED]> I've also tried this with <taglib> <taglib-uri>/tags/struts-bean</taglib-uri> <taglib-location>/WEB-INF/tlds/struts-bean.tld</taglib-location> </taglib> adding the beginning slash. Still no luck. ========================================================================== TOPIC: How to incremet IndetAddress / IP numbers http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/94897e32234ceaaf ========================================================================== == 1 of 6 == Date: Sat, Sep 18 2004 9:19 pm From: "Markus Kern" <[EMAIL PROTECTED]> i now got another problem, what's a good way to compare two instances of InetAddress. I want to check if one InetAddress is smaller that another. Greetings Markus == 2 of 6 == Date: Sat, Sep 18 2004 10:21 pm From: "Markus Kern" <[EMAIL PROTECTED]> btw, i solved the incrementing problem like this : ---- public static InetAddress incIP(InetAddress address) { byte[] ip = address.getAddress(); for (int i = ip.length - 1; i >= 0; i--) { if (ip[i] < Byte.MAX_VALUE) { ip[i]++; if (ip[i] != 0) { break; } } else { // ip[i] == Byte.MAX_VALUE ip[i] = Byte.MIN_VALUE; break; } } InetAddress inc = null; try { inc = InetAddress.getByAddress(ip); } catch (UnknownHostException e) { //sollte nicht passieren e.printStackTrace(); } return inc; } ---- anyway, i am no working on a method that can compare two InetAddress instances. I want to check if the the first arument is smaller then the other (for syntax check of the port scanner). i implemented it like this, but really don't like the code at all, i am sure you can solve it wy better... ---- public class smallerThan1 { public static boolean smallerThan (InetAddress x, InetAddress y){ int count1 = 1; byte[] a = x.getAddress(); for (int i = 0; i < a.length-1; i++){ if (a[i] != 0) { count1 = count1 * a[i]; // * 255 wird zu groß } else if (i > 0){ count1 = count1 * 1; // * 255 wird zu groß } } count1 += a[3]; int count2 = 1; byte[] b = y.getAddress(); for (int i = 0; i < b.length-1; i++){ if (b[i] != 0) { count2 = count2 * b[i]; // * 255 wird zu groß } else if (i > 0){ count2 = count2 * 1; // * 255 wird zu groß } } count2 += b[3]; if (count1 - count2 <= 0) { return true; } else { return false; } } ---- any hints appreciated ! =) the next thing would be, check how many host there are in an ip-range. i want to use this to implement a progress meter of the scan. if the user would try the range 0.0.0.0-255.255.255.255 you will get a really big number of hosts. Anyone got a question how to code such a progress meter sohow else? Thanx in advace for all you answers! greetings Markus p.s.may i perhaps open a new thread for these new questions ? == 3 of 6 == Date: Sat, Sep 18 2004 10:24 pm From: "Markus Kern" <[EMAIL PROTECTED]> shit! i am sorry the code of smallerThan doesn't seem to work correctly =/. i am lacking ideas now - i hope someone helps me out. Markus == 4 of 6 == Date: Sat, Sep 18 2004 10:36 pm From: Paul Lutus <[EMAIL PROTECTED]> Markus Kern wrote: > i now got another problem, > what's a good way to compare two instances of InetAddress. > I want to check if one InetAddress is smaller that another. Compare the integers I had you create previously. You cannot apply a criterion such as "smaller" to an InetAddress, but you can to an integer. -- Paul Lutus http://www.arachnoid.com == 5 of 6 == Date: Sat, Sep 18 2004 10:39 pm From: Paul Lutus <[EMAIL PROTECTED]> Markus Kern wrote: > btw, i solved the incrementing problem like this : This is not a solution. Create integers, convert the integers to bytes as I showed you. / ... > anyway, i am no working on a method that can compare > two InetAddress instances. I want to check if the the first > arument is smaller then the other (for syntax check of the > port scanner). Use the integers I showed you. You cannot compare two InetAddresses in the sense of "smaller". > > i implemented it like this, but really don't like the code at > all, i am sure you can solve it wy better... I already have. Go back to the code I already posted. -- Paul Lutus http://www.arachnoid.com == 6 of 6 == Date: Sat, Sep 18 2004 10:41 pm From: Paul Lutus <[EMAIL PROTECTED]> Markus Kern wrote: > shit! i am sorry the code of smallerThan doesn't seem to > work correctly =/. I already solved this problem. Use the code that has already been posted. > i am lacking ideas now - i hope someone helps me out. What? Use the code that has been posted already. Perhaps you can say what is wrong with the solution that has already been offered. -- Paul Lutus http://www.arachnoid.com ========================================================================== TOPIC: what u program? http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/ee20f99e67fd5410 ========================================================================== == 1 of 1 == Date: Sat, Sep 18 2004 10:09 pm From: Andrew Thompson <[EMAIL PROTECTED]> On Sat, 18 Sep 2004 20:17:15 +0200, Michael Borgwardt wrote: > Tor Iver Wilhelmsen wrote: >>>It has been since 1993. >> >> Yes, but all these recent newbie questions to cljp are the effect of >> the "old" September principle. > > A stronger version of it, in fact, since the group's topic is directly > related to many students' curriculum. Yes, but c.l.j.help is better suited to their general level of experience. Not that I am *assuming* that expereince with Java and experience with Usenet is linked, but there is a high correlation for those that post to c.l.j.programmer. -- Andrew Thompson http://www.PhySci.org/codes/ Web & IT Help http://www.PhySci.org/ Open-source software suite http://www.1point1C.org/ Science & Technology http://www.lensescapes.com/ Images that escape the mundane ========================================================================== TOPIC: simpleDateFormat and April month http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/383df9c88dcb10ba ========================================================================== == 1 of 1 == Date: Sat, Sep 18 2004 10:13 pm From: Andrew Thompson <[EMAIL PROTECTED]> On Sat, 18 Sep 2004 07:23:32 -0700, P.Hill wrote: >> I think there is a logical error. Because I create an calendar object >> with Y M D H M S, when I rerequest these values it gives different >> values. It allowes data without any Timezone information and responses >> with timezone data. > > Can you show THIS as code since that is NOT what you are doing in the > previous code you posted. I agree with Paul. I was about to write that yesterday, but wanted to hear something from the other posters to the thread (I have not used date/time stuff much). This problem is not done yet, Nurettin, I suggest you let the more experienced people test your current code on their machines. -- Andrew Thompson http://www.PhySci.org/codes/ Web & IT Help http://www.PhySci.org/ Open-source software suite http://www.1point1C.org/ Science & Technology http://www.lensescapes.com/ Images that escape the mundane ========================================================================== TOPIC: Problem with IE and Applets. http://groups-beta.google.com/group/comp.lang.java.programmer/browse_thread/thread/85712e86df721a37 ========================================================================== == 1 of 1 == Date: Sat, Sep 18 2004 10:18 pm From: Andrew Thompson <[EMAIL PROTECTED]> On 18 Sep 2004 07:16:25 -0700, Vardan wrote: > And second: Yes I see the > http://www.physci.org/pc/property.jsp?prop=java.version+java.vendor > applet. It's system information.. ...and the information is???? (I put that applet up, Vardan, just so that *we* could know what the value is, by giving *you* the URL and asking *you* to report back..) And as an aside. How might I have asked that question so it was clear to you? Or to put that another way.. If *you* were asking *me* the same question, what words would you write? -- Andrew Thompson http://www.PhySci.org/codes/ Web & IT Help http://www.PhySci.org/ Open-source software suite http://www.1point1C.org/ Science & Technology http://www.lensescapes.com/ Images that escape the mundane ======================================================================= You received this message because you are subscribed to the Google Groups "comp.lang.java.programmer". comp.lang.java.programmer [EMAIL PROTECTED] Change your subscription type & other preferences: * click http://groups-beta.google.com/group/comp.lang.java.programmer/subscribe Report abuse: * send email explaining the problem to [EMAIL PROTECTED] Unsubscribe: * click http://groups-beta.google.com/group/comp.lang.java.programmer/subscribe ======================================================================= Google Groups: http://groups-beta.google.com
