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• Resolving Session Fixation in JBoss

  - by Warren Blanchet

  I need to prevent Session Fixation, a particular type of session hijacking, in a Java web application running in JBoss. However, it appears that the standard idiom doesn't work in JBoss. Can this be worked around?

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• Open an external program in Qt with an attached file extension

  - by Phil

  I am making a qt application which allows the user to select a file and then upon clicking ok, start the associated program with the file already loaded. The program I want to start is java based, and I know how to use QProcess to get it to open, I don't know however how to add the file extension which the user is selecting. Any suggestions?

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• Override jre_lib classes

  - by Filip

  What is the best way to override jre_lib classes? Let's say I need to store all ArrayLists not in RAM but on disk or anywhere else. I wanna write my own ArrayList class to code this functionality and make sure that every instantiations of ArrayList use my class. I thought about class loading mechanism to change order of classpath, but as I see…

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• Saving MP3 playlist to file

  - by Northernen

  Hello. I am making my own crude MP3 player, and I now have a JList with which I have populated a number of files in the form of MP3 objects (displayed on frame using DefaultListModel). I would now like to have the oppurtunity to save this JList to a file on disk. How would I go about doing this? I'm very new with programming and Java, so help…

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• Why do some APIs provide mostly interfaces, not classes?

  - by Lord Torgamus

  Some Java APIs provide a large number of interfaces and few classes. For example, the Stellent/Oracle UCM API is composed of roughly 80% interfaces/20% classes, and many of the classes are just exceptions. What is the technical reason for preferring interfaces to classes? Is it just an effort to minimize coupling? To improve…

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• How to convert an ArrayList containing Integers to primitive int array?

  - by Snehal

  I'm trying to convert an ArrayList containing Integer objects to primitive int[] with the following piece of code, but it is throwing compile time error. Is it possible to convert in Java? List<Integer> x = new ArrayList<Integer>(); int[] n = (int[])x.toArray(int[x.size()]);

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• How to create a database binding using Windows Builder Pro?

  - by Tiago

  For the first time, I'm creating a Java Swing application. I'm using Windows Builder Pro in Eclipse, and a MySQL database (already setup up). Let's say I have a combo box, and I want (for instance) all 'name' fields from a 'certain' table appear. How can I setup that binding? I know how to programatically handle the…

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• Sharing serial port (Modem protocol + dialer)

  - by debita

  Hi, I wanted to use this code to send archives with Xmodem: http://www.java2s.com/Code/Java/Network-Protocol/JModemsimplecommunicationsprogram.htm In this case, I want to establish a dialup connection between two computers and send a binary file. But this code doesn't let me set a phone number to dial after i setup the…

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• Programmatically find complement and supplement of colors?

  - by Mohit Deshpande

  Is there a way to find the complement or supplement of a color given its RGB values? Or can it only be found for certain colors? How would someone go about doing this in Java?

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• Why my program creates empty .lck files?

  - by Roman

  I am trying to use Java Logger. I get my logger file (name.log) with the content I wish but I also get empty name.log.lck file. Why this file appears and how I can remove this behavior. Thank you in advance.

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• Programs that reproduces itself

  - by SHiNKiROU

  Is it possible to make a Java program that prints its source code to a new file, and compiles it, and runs the compiled program?

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• Finding class files that Eclipse builds

  - by Bernhard V

  Hi. When Eclipse builds my workspace, I assume that it creates Java .class files. What else should otherwise deploy to my running JBoss AS? Do you know where I can find these class files that Eclipse temporarily creates?

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• can i know how to fix this error? is delete method

  - by user334101

  import javax.swing.*; import java.io.File; public class Third { public static void main(String[] args) throws Exception { String humanName; humanName = JOptionPane.showInputDialog(null, "Enter the file name"); File file = new File(+ humanName".txt"); …

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• How to generate one jar with different executable classes in maven2?

  - by GuidoMB

  I have a big project that uses maven and I'm creating the project's jar. The problems is that the project has several classes that can be executed. How can I accomplish this? Every time that I try to execute a class I get this message java -jar library.jar ExecutableClass1 Failed to load…

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• Secure WS client with UsernameToken(SOAP security header)

  - by user79163

  Hi, I'm trying to secure my WS client to be able to call the WS. My code looks like this: SendSmsService smsService = new SendSmsService(); SendSms sendSMS = smsService.getSendSms(); BindingProvider stub = (BindingProvider)sendSMS; //Override endpoint with local copy of…

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• Eclipse javascript character encoding

  - by Bardock

  Hi, I'd like to display some language specific characters from javascript but I can't. My app is a Java webapp and the front end is jQuery. All the characters that are sended from the server - in a JSP or with AJAX - are displayed properly. When I want to display some text hardcoded…

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• Automation of EAR packing

  - by glebreutov

  I need to automate packing of Java EE projects into EAR archive in Eclipse. The most easy way, I think, is using Ant script. But writing of Ant from start is routine and long task. Is there a way to generate Ant script based on my actions in eclipse (like macros in MS Office)? Or,…

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• JUnit @Rule to pass parameter to test

  - by 01

  I'd like to create rule to be able to do something like this @Test public void testValidationDefault(int i) throws Throwable {..} Where i is parameter passed to the test by @Rule. However I do get java.lang.Exception: Method testValidationDefault should have no parameters is…

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• What is the time complexity of TreeSet iteration?

  - by John Smith

  In my code, java treeset iteration is the dominant time factor. In looking at the system I believe that it is n*log(n) complexity. Can anyone verify this? I am thinking that by providing links backward from child node to parent node I could improve the performance.

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• Reliable data serving

  - by Madhu

  How can i make sure my file serving is reliable and scalable? How many parallel request it can handle? I am thinking beyond the hardware capability and band width. i am following http://stackoverflow.com/questions/55709/streaming-large-files-in-a-java-servlet

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• Professional way to write project documentation

  - by EugeneP

  What tools and standards do you use to describe your project, database, modules, classes, their interaction for programmers, let's say after the project is finished. Do you use UML? Are there enterprise standards for Java developers, how to write such a documentation let's say…

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• Browser removing + from request parameter

  - by Marquinio

  Hello everyone, I'm trying to pass an SQL query string from a Java Applet to Servlet as a parameter. Problem is that in Applet I have something say: sql=select * from p where(+p=1) The resulting sql parameter in the Servlet is sql=select * from p where(+p=1). So anyone…

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• How to get a value from the last inserted row?

  - by eflles

  Is there some way to get a value from the last inserted row? I am inserting a row where the PK will automatically increase, and I would like to get this PK. Only the PK is guaranteed to be unique in the table. I am using Java with a JDBC and PostgreSQL.

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• Possible to run JAR file on any OS?

  - by Mohit Deshpande

  Is it possible to execute a JAR file on any OS (like Windows, Linux, Mac OS X)? I want to build a simple application that I want to run on Linux, Windows, and Mac OS X. Could the JAR file be run on any OS with java installed?

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• where can I get these kind of exercises to solve?

  - by flash

  Recently I did a Java programming exercise successfully which was sent by a recruiting firm, The problem statement goes like this 'There are two text files FI(records abt files and directory information) and FS(containing blocks of data) which represent a file Index and…

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