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  • Java java.util.ConcurrentModificationException error

    - by vijay
    Hi all, please can anybody help me solve this problem last so many days I could not able to solve this error. I tried using synchronized method and other ways but did not work so please help me Error java.util.ConcurrentModificationException at java.util.AbstractList$Itr.checkForComodification(Unknown Source) at java.util.AbstractList$Itr.remove(Unknown Source) at JCA.startAnalysis(JCA.java:103) at PrgMain2.doPost(PrgMain2.java:235) Code public synchronized void startAnalysis() { //set Starting centroid positions - Start of Step 1 setInitialCentroids(); Iterator<DataPoint> n = mDataPoints.iterator(); //assign DataPoint to clusters loop1: while (true) { for (Cluster c : clusters) { c.addDataPoint(n.next()); if (!n.hasNext()) break loop1; } } //calculate E for all the clusters calcSWCSS(); //recalculate Cluster centroids - Start of Step 2 for (Cluster c : clusters) { c.getCentroid().calcCentroid(); } //recalculate E for all the clusters calcSWCSS(); // List copy = new ArrayList(originalList); //synchronized (c) { for (int i = 0; i < miter; i++) { //enter the loop for cluster 1 for (Cluster c : clusters) { for (Iterator<DataPoint> k = c.getDataPoints().iterator(); k.hasNext(); ) { // synchronized (k) { DataPoint dp = k.next(); System.out.println("Value of DP" +dp); //pick the first element of the first cluster //get the current Euclidean distance double tempEuDt = dp.getCurrentEuDt(); Cluster tempCluster = null; boolean matchFoundFlag = false; //call testEuclidean distance for all clusters for (Cluster d : clusters) { //if testEuclidean < currentEuclidean then if (tempEuDt > dp.testEuclideanDistance(d.getCentroid())) { tempEuDt = dp.testEuclideanDistance(d.getCentroid()); tempCluster = d; matchFoundFlag = true; } //if statement - Check whether the Last EuDt is > Present EuDt } //for variable 'd' - Looping between different Clusters for matching a Data Point. //add DataPoint to the cluster and calcSWCSS if (matchFoundFlag) { tempCluster.addDataPoint(dp); //k.notify(); // if(k.hasNext()) k.remove(); for (Cluster d : clusters) { d.getCentroid().calcCentroid(); } //for variable 'd' - Recalculating centroids for all Clusters calcSWCSS(); } //if statement - A Data Point is eligible for transfer between Clusters. // }// syn } //for variable 'k' - Looping through all Data Points of the current Cluster. }//for variable 'c' - Looping through all the Clusters. }//for variable 'i' - Number of iterations. // syn }

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  • Direct 2D gnuplot PNG animation?

    - by Xepoch
    Can anyone please confirm that yes/no Gnuplot 4.5 (on CVS) can output 2D animated PNG files? I have numerous datasets but one line that I'd like to show iteratively in 3 different places in my graph. Can this be done directly from gnuplot or is this something that would need to be animated externally from multiple frames?

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  • Two TableVIew in ONE ViewCOntroller

    - by senthilmuthu
    hi, i i want to activate scrolling vertically through programming for 2 UITableview at sametime?(one table view length 160,another one has 160).is it possible ?In one Viewcontroller's view i have scrollview, on that i have two tableviews(instead of one,like two column)..how can i scroll vertically both at same time?any help please?

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  • provisioning profile problem?

    - by senthilmuthu
    hi, i am new to creating provisioning profile.can i use same provisioning profile for all applications(except using *, we can install one app at a time)?for example if i go bundle identifier and give my comapanyname only as com.mycompanyname(apple id).${PRODUCT_NAME:identifier},and also i set my certifate,after that will my application run in device?(without creating provisioning file for each application),i have seen like this in my friend system,how is it possible?any help please?

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  • Rich image scroll and zooming on android

    - by F0RR
    I'm looking for a way to implement image zoom and scrolling the way it is implemented in Droid Comic Viewer. Is there any quick way to do that? If not, then could you please give some advices at least on implementing kinetic scrolling.

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  • explain these select statements!

    - by user329820
    Hi, I can not get the difference betwwn these statements? would you please help me,I have read some sample of select statements but I did not get these ones. SELECT 'B' FROM T WHERE A = (SELECT NULL); SELECT 'C' FROM T WHERE A = ANY (SELECT NULL); SELECT 'D' FROM T WHERE A = A; I use MySQL

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  • how to learn a library/framework structure?

    - by fayer
    a lot of people are contributing to open source libraries/frameworks. i wonder how these people learn the structure so that they can contribute? lets take doctrine and symfony as an example. is there a blueprint over these frameworks to give the developers an insight of the structure? or do they just download it and study the code? how does it work? please you contributors, share your learning strategies! thanks

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  • Explain this SQL query in plain English.

    - by Kevinniceguy
    Please explain, in plain English, what question this SQL query answers: SELECT SUM(price) FROM Room r, Hotel h WHERE r.hotelNo = h.hotelNo and hotelName = 'Paris Hilton' and roomNo NOT IN (SELECT roomNo FROM Booking b, Hotel h WHERE (dateFrom <= CURRENT_DATE AND dateTo >= CURRENT_DATE) AND b.hotelNo = h.hotelNo AND hotelName = 'Paris Hilton');

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  • Intergating Liferay and Alfresco

    - by Jim
    Hello, Im using Liferay version 5.2.3 and Alfresco Community Edition.I want to integrate Alfresco with Liferay . I want to show Alfresco as a portlet within Liferay. Can someone please tell me how to go about doing this ? Thank You

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  • Bad class file error when using Scala 2.8.0-rc1 in Javafx 1.2

    - by aoprisan
    When trying to import scala.Option in a javafx script, I get the following javafxc error: bad class file: scala/Option$$anonfun$orNull$1.class(scala:Option$$anonfun$orNull$1.class) undeclared type variable: A1 Please remove or make sure it appears in the correct subdirectory of the classpath. import scala.Option; ^ I am using Scala 2.8.0-RC1, Javafxc 1.2.3_b36, JVM 1.6.0_18-b07, OS Ubuntu 9.10. The same code was working in Scala 2.7.7 .

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  • How to exit from Native video player in Blackberry?

    - by Rajapandian
    Hi, I created one blackberry application which will play a video on a button click.This is my code, invocation=new Invocation("file:///SDCard/Blackberry/videos/PlayingVideo/funny.mp4"); registry=Registry.getRegistry("net.rim.device.api.content.BlackBerryContentHandler"); try { registry.invoke(invocation); } catch(Exception e) { } Now i can play the Video file.After clicking the Back button the native player is going to the background.It always running in the background.But i want to close that player.I have no idea about how to do it.Anybody knows please help me.

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  • Looking for a jQuery plugin : sort of bar rating

    - by Tristan
    Hello, i own a website where users can vote/rate things and i want to improve the poor inputbox (from 1 to 10) to improve visual rendering. I was thinking of a bar, which have 10 ' | ' you can move the cursor from one to ten (it doesn't have to be AJAX because the rating is only added at the end of the form) I'm sure you already seend this king of thing but i actually can't find any plugin of it. Any ideas please ?

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  • JNA problem with char** (in dll)

    - by underline
    Hi, ok it is 'easy' to make jna wrapper solution for mapping exported functions within dll using jna: long f1(int x), just int long f2(char* y), just char[] but how to deal with long f3(char** z) ? I need f3's result(long) as well as z value on java side. Please don't say cpp code should be rewritten to avoid this:-)

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  • AJAX Loader/Progress Bar for Flash File

    - by atif089
    Hi, I want to implement a progress par using AJAX for a flash file. Please see the demo here http://www.freeplaynow.com/online-games/play/1729/park-my-plane.html Tried to debug their page but the javascript is obfuscated and im not so good in js. Any ideas ? Thanks

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