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  • Can i write to data output stream after reading response from data input stream?

    - by Sirius
    Hi, i want to do a client-server activity like this: 1. first the client sends/writes to output stream 2. the server responses with some data that will be read with input stream 3. after receiving the data, the client sends/writes to output stream again to respond that the data has been received now, do i have to close the output stream and re-open it again before doing step no.3 ? also if someone could provide me with a snippet, it would be really helpful. thanks

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  • How to draw/manage a hexagon grid?

    - by W.N.
    I've read this article: generating/creating hexagon grid in C . But look like both the author and answerer have already abandoned it. v(hexagonSide - hexagonWidth * hexagonWidth): What's hexagonSide and hexagonWidth? Isn't it will < 0 (so square root can't be calculated). And, can I put a hexagon into a rectangle? I need to create a grid like this: One more thing, how can I arrange my array to store data, as well as get which cells are next to one cell? I have never been taught about hexagon, so I know nothing about it, but I can easily learn new thing, so if you can explain or give me a clue, I may do it myself.

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  • onchange force page submit

    - by cometta
    <form jwcid="@Form" listener="listener:updateStaff"> <select jwcid="staffselect@Select" multiple="ognl:false" validators="validators:required" onchange="this.form.submit()" listener="listener:updateStaff"> <span jwcid="@For" source="ognl:hrStaff" value="ognl:currentHrStaff" index="ognl:currentHrStaffIndex"> <option class="text11" jwcid="@Option" selected="ognl:hrStaffSelection[currentHrStaffIndex]" label="ognl:currentHrStaff"/> </span> </select> </form> when onchange on selectbox, this form will be submitted and my pageValidate() will be called follow by upadteStaff() listener method. I wonder, when such submission is fired, can onchange='' pass a flag ('selectboxisfired' string) that i able to capture inside pagevalidate() 'selectboxisfired'? this will allow my logic inside pagevalidate to indicate is triggered by selectbox.

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  • Eclipse antRunner command line build has wrong dependency build order

    - by Sam Jones
    My team's Eclipse RCP app builds fine from the Eclipse IDE. When I try to build it from the command line, using the antRunner application, it builds the plugins out of order -- a plugin builds before it's dependencies are built, and so can't resolve some of the needed classes. Where should I look to fix this? As far as I can tell, the dependencies are set up correctly (a feature that depends on a plugin that depends on another plugin). I have my build.properties and folder structure set up as specified here. Is there anything else I should look at?

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  • How to sett up hibernate to use Glassfish connection pool?

    - by jschoen
    I have set up a connection pool in Glassfish with a jndi resource for it also setup. I am stumped on how to configure hibernate to go get it. I have come across alot of write ups to configure it to use C3P0 connection pool. Well I am lost. I found that I need to set: hibernate.connection.datasource hibernate.jndi.url hibernate.jndi.class hibernate.connection.username hibernate.connection.password Would datasource be the same as the hibernate.connection.datasource set in the connection pool? What would hibernate.jndi.class be? Are hibernate.connection.username and hibernate.connection.password for the connection to the database or to the appserver? I assume this is to the database, but why do I need them since that is all set in the appserver?

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  • JUnitCore.runClasses doesn't print anything....

    - by Grégoire
    I have a test class that I'm trying to run from a main method with the folowing code : Result r = org.junit.runner.JUnitCore.runClasses(TestReader.class); when I examine the Result object I can see that 5 tests have been run but nothing is printed on the screen. Should I do something else to get an output ?

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  • How can I interrupt a ServerSocket accept() method?

    - by lukeo05
    Hi, In my main thread I have a while(listening) loop which calls accept() on my ServerSocket object, then starts a new client thread and adds it to a Collection when a new client is accepted. I also have an Admin thread which I want to use to issue commands, like 'exit', which will cause all the client threads to be shut down, shut itself down, and shut down the main thread, by turning listening to false. However, the accept() call in the while(listening) loop blocks, and there doesn't seem to be any way to interrupt it, so the while condition cannot be checked again and the program cannot exit! Is there a better way to do this? Or some way to interrupt the blocking method? Thanks!

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  • Blackberry apps: Native or webapps?

    - by jpartogi
    Dear all, I have read the Blackberry documentation and it is possible to push a notification from a webapp. I am planning to create a Blackberry application that compliments to our webapps. But I am still left in the middle whether to develop a webapp or native Blackberry app. I have also look at how a webapp runs on Blackberry browser and it looks smooth. From your experience does the native app offer something that the webapp doesn't? Bonus question, is Facebook and Twitter app on Blackberry a native app or a webapp? If it is a webapp, is it possible to make a launcher for the application on Blackberry? Thanks for your help.

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  • Looking for detailed explanation of Hibernate UserType methods for mutable objects

    - by Tom
    I am creating a custom UserType class in Hibernate. The specific case is for an HL7v3 clinical document (I work in health IT). It is a mutable object and most of the documentation around the Hibernate UserType interface seems to center around immutable types. I want a better understanding of how and when the interface methods are used, specifically: assemble - why two parameters (one Serializable, one Object)? What is the use case for this method? disassemble - should I just implement this method to return a serializable form (e.g. String representation)? When and how is this method invoked? equals - is this for update? read? contention? dirty reads? What are the consequences of simply returning false in most cases? replace - I really don't understand where the three Object parameters come from, when this method is invoked, and what Hibernate expects to return, or how that return value is used. Any pointers would be appreciated. I've searched and read all I can find on the subject, but have not found much documentation at all explaining how these methods are used for mutable objects.

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  • Unable to change background colour for JOptionPane

    - by Sunil Kumar Sahoo
    Hi I have created sample progeam which will give same look and feel of a confirm dialog and set the background colour as red. But I donot know what is the problem that my background colour of option is displayed as the default colour but not red. also i need same look and feel of confirm dialog across all platforms. Here is the code that I have written. please help me to solve the issue public class JOptionPaneBackground { public static void main(String[] args) throws Exception { // UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName()); UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); UIDefaults uiDefaults = UIManager.getLookAndFeelDefaults(); List<Object> keys = new ArrayList<Object>(uiDefaults.keySet()); Collections.sort(keys, new Comparator<Object>() { public int compare(Object o1, Object o2) { return (o1.toString()).compareTo(o2.toString()); } }); for (Object key : keys) { System.out.println(String.format("%-40s = %s", key, uiDefaults.get(key))); } UIManager.put("OptionPane.background", Color.red); UIManager.put("Panel.background", Color.red); JOptionPane.showConfirmDialog(null, "Hello World!"); } }

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  • Is it better to use List or Collection?

    - by Vivin Paliath
    I have an object that stores some data in a list. The implementation could change later, and I don't want to expose the internal implementation to the end user. However, the user must have the ability to modify and access this collection of data. Currently I have something like this: public List<SomeDataType> getData() { return this.data; } public void setData(List<SomeDataType> data) { this.data = data; } Does this mean that I have allowed the internal implementation details to leak out? Should I be doing this instead? public Collection<SomeDataType> getData() { return this.data; } public void setData(Collection<SomeDataType> data) { this.data = new ArrayList<SomeDataType>(data); }

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  • Creating circular generic references

    - by M. Jessup
    I am writing an application to do some distributed calculations in a peer to peer network. In defining the network I have two class the P2PNetwork and P2PClient. I want these to be generic and so have the definitions of: P2PNetwork<T extends P2PClient<? extends P2PNetwork<T>>> P2PClient<T extends P2PNetwork<? extends T>> with P2PClient defining a method of setNetwork(T network). What I am hoping to describe with this code is: A P2PNetwork is constituted of clients of a certain type A P2PClient may only belong to a network whose clients consist of the same type as this client (the circular-reference) This seems correct to me but if I try to create a non-generic version such as MyP2PClient<MyP2PNetwork<? extends MyP2PClient>> myClient; and other variants I receive numerous errors from the compiler. So my questions are as follows: Is a generic circular reference even possible (I have never seen anything explicitly forbidding it)? Is the above generic definition a correct definition of such a circular relationship? If it is valid, is it the "correct" way to describe such a relationship (i.e. is there another valid definition, which is stylistically preferred)? How would I properly define a non-generic instance of a Client and Server given the proper generic definition?

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  • Best way to access database from android

    - by Brandon Delany
    I am working on a Android app and I have a dilemma. I have a list of Objects. I have to update each of these objects with a database. I have 2 methods: Method 1: I can loop through the Objects. For each object I can connect to the server, update it, and then move on to the next Object, and so forth. Method 2: I can store the Objects in a list, send the whole list to the server, update it on the server side, then return a list of updated objects. My questions are: Which method is faster? Which method is easier on the phone's battery? By the way, Method 1 is easier for me to code :). Thank you.

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  • How can i setParth for new File use JFilechose , save dialog ?

    - by tiendv
    I have a dialog use Jfilechose, when i save a file by use FileOutputStream to create a file.txt to save in path which user want . But i have problem that it alway save in c:/user/Document Check my code DownLoadDialog downloadDialog = new DownLoadDialog(); int result = downloadDialog.showSaveDialog(queryPanel); if(result == downloadDialog.APPROVE_OPTION) { File file = downloadDialog.getSelectedFile(); //String parth =file.getPath(); //System.out.println(parth); //if(file.exists()) { // int response = JOptionPane.showConfirmDialog (null,"Overwrite existing file?","Confirm Overwrite",JOptionPane.OK_CANCEL_OPTION,JOptionPane.QUESTION_MESSAGE); // if(response == JOptionPane.OK_OPTION) {} //} else { if(resultGoogleSearch > 0) { { String parth = new File(downloadDialog.getSelectedFile().getAbsolutePath().concat(".txt")).toString(); System.out.println(parth); for(int i=0;i<resultGoogleSearch;i++) { String[] temp = googleSearchResult.get(i).split("<br>"); //String resultURL = temp[0]; //File dir = downloadDialog.getCurrentDirectory(); try{ FileOutputStream googleReuslt = new FileOutputStream( downloadDialog.getSelectedFile().getAbsolutePath()+".txt" ); OutputStreamWriter writer = new OutputStreamWriter(googleReuslt); BufferedWriter buffer = new BufferedWriter(writer); writer.write(temp[0]); writer.close(); buffer.close(); } catch (FileNotFoundException fEx){ } catch(IOException ioEx) { } } } JOptionPane.showMessageDialog(IDRSApplication.idrsJFrame, IDRSResourceBundle.res.getString("successful")); } problem is here : why can't i set parth for new file ? FileOutputStream googleReuslt = new FileOutputStream( downloadDialog.getSelectedFile().getAbsolutePath()+".txt" ); OutputStreamWriter writer = new OutputStreamWriter(googleReuslt); BufferedWriter buffer = new BufferedWriter(writer); writer.write(temp[0]); writer.close(); buffer.close();

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  • JSP request parameter is returning null on a jsp include with Weblogic.

    - by doug
    Hello, I am having trouble with the jsp:include tag. I have code like the following: <jsp:include page="./Address.jsp"> <jsp:param value="30" name="tabIndex"/> <jsp:param value="true" name="showBox"/> <jsp:param value="none" name="display"/> </jsp:include> The page is included fine, but when I try to access the parameters on the Address.jsp page, they are null. I have tried accessing them the following ways (with jstl): <c:out value="${param.tabIndex}" /> <c:out value="${param['tabIndex']} /> <%= request.getParameter("tabIndex") %> <c:out value="${pageScope.param.tabIndex} /> ${param.tabIndex} etc... Here is the kicker, The above works fine in tomcat 5.5. However, when I deploy the application in Weblogic 10, it does not. Also, the code works fine in other areas of my application (on weblogic) just not a particular page. Any Ideas? Thanks!

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  • Why doesnt R.raw.'songname' not work on android devices?

    - by James Rattray
    I have some media (Audio tracks) on an app... With file path 'R.raw.test' I use some code to get it into a mediaplayer... MediaPlayer.create(Textbox.this, R.raw.fly); And it works PERFECTLY on the Android Emulator... (Plays track on click of button) Can someone explain why, when I put it on my Archos (5 IT) it doesnt work at all? -As soon as the button is clicked, it crashes... Do you have to do something to file paths or what? Please help... Thanks alot... James

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  • Remove robot as an editor of a blip

    - by Lee
    I have a Google Wave robot which makes changes to some blip content depending on what a user inputs. When this edit is made, the robot is listed in the blip as one of the people who have edited it (so shows its Avatar and robot name). I was wondering if anyone knew if it was possible (and if so how), to stop the robot being listed as an editor (either by it not happening in the first place, or removing it afterwards).

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  • Accessing property file through batch script

    - by Farid
    Hi everyone, I'm trying to write a batch script, this script is responsible to launch a jar with one parameters. This parameter indicate to my jar wich property file to use in order to setup some configuration. Then the script will zip the results produced by the jar and send them to a location. But in order to set the name of the zip file I would need to be able to read the property file directly from the batch, is there a way to do so ? Thanks and regards, F

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  • Reading annotation property in aspect

    - by Lukasz Koniecki
    How to read annotation property value in aspect? I want my Around advice to be executed for all joint points annotated with @Transactional(readonly=false). @Around("execution(* com.mycompany.services.*.*(..)) " + "&& @annotation(org.springframework.transaction.annotation.Transactional)") public Object myMethod(ProceedingJoinPoint pjp) throws Throwable { }

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  • How do I recieve byteArray send from Server and read 4 single bytes at a time.

    - by k80sg
    I need to receive 320 bytes of data from a server which consist of 80 4 bytes int fields. How do I receive them in bytes of 4 and display their respective int values? Thanks. Not sure if this is right for the receiving part: //for reading the data from the socket BufferedInputStream bufferinput=new BufferedInputStream(NewSocket.getInputStream()); DataInputStream datainput=new DataInputStream(bufferinput); byte[] handsize=new byte[32]; // The control will halt at the below statement till all the 32 bytes are not read from the socket. datainput.readFully(handsize);

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