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  • Difficulties of transforming a Java program to another language (or vice versa)

    - by NomeN
    Is there anything simple Java can't do that can be done in a similar language or vice versa? Lets say you have a piece of software in language X and you rewrite it entirely to Java (or the other way around), what are the little things that would seriously hamper the translation? At first I was thinking of comprehensions or multiple exit loops, but these are easily rewritten with a for_each loop with an if statement and a local variable respectively. Maybe Exceptions? But which language does not have a similar construct? Polymorphism? But I don't see how I could show that in a few lines. I'm looking for a short and sweet example, that would give some serious headache to work around.

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  • CICS web service requestor GET CONTAINER returns neither data nor error

    - by Namhcir
    I am developing a CICS web service requestor application to consume a distributed web service. I used the web services assistant DFHWS2LS to transform the wsdl to copybooks successfully. I have no problem issuing the PUT CONTAINER and INVOKE SERVICE api commands, but when I issue GET CONTAINER I am not receiving any containers or data. No response codes or error messages, but no data. Any ideas on how to debug this would be greatly appreciated. Thanks,

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  • Bad event on java panel

    - by LucaB
    Hi I have a java panel with 4 buttons. When I click on of these buttons, a new frame appears and the first is hidden with setVisibile(false). On that new window, I have another button, but when i click it, I got the event corresponding to the fourth button of the first window. Clicking the button again does the trick, but of course this is not acceptable. Am I missing something? I just show the frames with nameOfTheFrame.setVisible(true); and I have MouseListeners on every button. The code of the last button is simply: System.exit(0); EDIT Sample code: private void btn_joinGamePressed(java.awt.event.MouseEvent evt) { GraphicsTools.getInstance().getCreateGame().setVisible(false); GraphicsTools.getInstance().getMainPanel().setVisible(false); GraphicsTools.getInstance().getRegistration().setVisible(true); } GraphicsTools is a Singleton.

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  • Adobe Flex + Air or Java + JavaFX 2.0?

    - by kuyapangu
    Hey guys! I'm looking into a cloud-computing related career. I've recently graduated from school and have been meaning to study a new programming language. From what I understand, I need to get into RIA development for this. Flex and Java have certainly caught my attention, but I am torn as to whether focus on Flex then continue with Air, or study Java first and see how JavaFX 2.0 pans out, and then continue with Flex thereafter. I've no previous experience with either, and I'm sort of giving myself something like two years or so to learn. What do guys think? Thanks for the feedback! :)

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  • Java - Iterator: "Syntax error, parameterized types are only available if source level is 5.0"

    - by Helpme
    Hi! I'm purposely targeting Java OS 1.4.2 I'm trying to use an iterator combined with apache's POI to read an excel spreadsheet. The code runs perfectly in java 1.5, but in the 1.4.2 version I get the error listed in the question subject. the code is: Iterator myIter = null; it breaks on that line of code, which is clearly at the beginning of the application. I dont understand what needs to be done to correct this issue. Please let me know if you have any insight!

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  • Comparing utf-8 strings in java

    - by cppdev
    Hi, In my java program, I am retrieving some data from xml. This xml has few international characters and is encoded in utf8. Now I read this xml using xml parser. Once I retrieve a particular international string from xml parser, I need to compare it with set of predefined strings. Problem is when i use string.equals on internatinal string comparison fails. How to compare strings with internatinal strins in java ? Here's the line that compares strings string country; if(country.equals("Côte d'Ivoire")) { }

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  • web.config File Section Replacements

    - by simon831
    I have a web deployment project that does a web.config section replacement using an external file. (this is to change the connection strings section). The web.config section replacement works fine when built manually, but when built as part of a TFS build the section is not replaced. I cannot find any errors or warnings in the build log. What are the likely causes, or how can I 'debug' this?

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  • Add folder, which contains java sources, to classpath at runtime

    - by markovuksanovic
    Is it possible to add a folder which contains java source code as a classpath element. I have tried a few things and it seems that the classloadr is not picking up java soruce files? One of my attempts is shown below.... File uncompressedSrc = new File("uncompressed" + File.separator + "src" + File.separator); URL uncompressedSrcURL = null; try { uncompressedSrcURL = new URL("file://" + uncompressedSrc.getAbsolutePath()); } catch (MalformedURLException e) { e.printStackTrace(); } URL elements[] = { uncompressedSrcURL }; new URLClassLoader(elements, ClassLoader.getSystemClassLoader());

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  • Edit Settings in web.config

    - by Scott Selby
    I didn't know how to title this question - I am making a request to PayPal's Express Payment API. I am using their dll that helps make the request and parse the response. The instructions for their code to work is to add you authorization credentials in the web.config file. I have done so. My problem is that I want to be able to edit these credentials that are being set dynamically ( probably get from SQL ) because we are going to allow different users to enter their API credentials. Sending the request to PayPal looks like this Dim wrapper As New SetExpressCheckoutReq() wrapper.SetExpressCheckoutRequest = request Dim service As New PayPalAPIInterfaceServiceService() Dim setECResponse As SetExpressCheckoutResponseType = service.SetExpressCheckout(wrapper) There's not much room in there to edit the header of the request , because PayPalAPIInterfaceServiceService() is defined in their dll and applies its own header based on the credentials in the web.config. So, my question is , is there a way to point in the web.config to another location when it looks in web.config? I'm not to sure this is possible , also is there any way to edit the header of a request that is defined in a dll without changing the dll (to stay pci compliant) The line in the web.config is here: <account apiUsername="****" apiPassword="****" apiSignature="****"/>

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  • Share java object between two forms using Spring IoC

    - by Vladimir
    I want to share java object between two forms using Spring IoC. It should acts like Registry: Registry.set("key", new Object()); // ... Object o = Registry.get("key"); // ... Registry.set("key", new AnotherObject()); // rewrite old object I tried this code to register bean at runtime: applicationContext.getBeanFactory().registerSingleton("key", object); but it does not allow to rewrite existing object (result code for checking and deleting existing bean is too complicated)... PS I am Java newbie, so mb I am doing it wrong and I should not use IoC at all... any help is appreciated...

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  • NETBEANS JAVADB - How do I integrate a JavaDB DataBase into my main Java Package

    - by Stefanos Kargas
    JAVA I am working on a desktop application which uses JavaDB. I am using NetBeans 6.8 and JDK 6 Update 20 I created the database I need and connected to it through my application using ClientDriver: String driver = "org.apache.derby.jdbc.ClientDriver"; String connectionURL = "jdbc:derby://localhost:1527/myDB;create=true;user=user;password=pass"; try { Class.forName(driver); } catch (java.lang.ClassNotFoundException e) { e.printStackTrace(); } try { schedoDBConnection = DriverManager.getConnection(connectionURL); } catch (Exception e) { e.printStackTrace(); } This works fine. But in that case the service of the database comes from NetBeans. If I move my application to another PC I won't be able to access my database. How can I integrate my JavaDB into my application?

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  • Exception in thread "main" java.lang.NoClassDefFoundError

    - by Manu
    package pack; public class sample{ public static void main(String input[]) { NumberFormat numberFormat = new DecimalFormat("#,##0.00##"); System.out.println(numberFormat.format(44533125.00)); } } the code is working fine in the current dir.. (c:/myprogram/). after that i copy the sample.class file and paste it in other dir(d:/myprogram). i got error while running, like " Exception in thread "main" java.lang.NoClassDefFoundError: sample (wrong name: pack/sample)" In java .class file can run anywhere right? but why i am not able to run?

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  • App-Engine (Java) File Upload

    - by Manjoor
    I managged to upload files on app-engine by using the following example http://stackoverflow.com/questions/1513603/how-to-upload-and-store-an-image-with-google-app-engine-java and http://www.mail-archive.com/[email protected]/msg08090.html The problem is, I am sumitting other fields along with file field as listed below <form action="index.jsp" method="post" enctype="multipart/form-data"> <input name="name" type="text" value=""> <br/> <input name="imageField" type="file" size="30"> <br/> <input name="Submit" type="submit" value="Sumbit"> </form> In my servlet I am getting null when querying name = request.getParameter("name"); Why it is so? Is there a way to retrieve text field value?

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  • which techonology is good for my online store?

    - by 5YrsLaterDBA
    I am thinking about build a online store for my wife to sale something. we need database for customer info and goods info. we also need shopping cart for customers to use. I have yrs java experience but no web experience (know a little about jsp and servlet). I am thinking using wicket and other java technologies plus MySQL to build it. but I am open to other options. I am willing to learn new things. what's your expert views? thanks,

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  • Creating java executable using JNI ?

    - by Xinus
    I am trying to create executable under windows platform for Java program using JNI ,C/C++ and invocation API, I have already created jar file for my program which includes all dependencies. I want to embed it in exe file, I was successful in running simple main class(present in file system) using JNI invocation API, I am planning to add jar file as resource in C/C++ program. But I don't know how do I run that jar file , One option is create temporary jar file on file system and run it using java, But I do not want to expose my jar file to everyone for security reasons, How can I run serialized jar file on the fly using JNI ?

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  • ProGuard breaks Java application - no text, no images

    - by jocull
    I'm trying to use ProGuard to obfuscate a Java application. I'm experiencing a problem where all of my text and images disappear from the GUI (Swing) forms. I've tried disabling optimizations and including more libraries, but nothing seems to be working. I've inspected the output generated by the obfuscator with a decompiler, and my resource paths seem to still be correct. Do I need to be including more core Java libraries outside of jre/lib/rt.jar? Are there more settings I should disable? ...other suggestions? Thanks.

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  • How to know start and kill processes within Java code (or C or Python) on *nix

    - by recipriversexclusion
    I need to write a process controller module on Linux that handles tasks, which are each made up of multiple executables. The input to the controller is an XML file that contains the path to each executable and list of command line parameters to be passed to each. I need to implement the following functionality: Start each executable as an independent Be able to kill any of the created processes independent of the others In order to do (2), I think I need to capture the pid when I create a process, to issue a system kill command. I tried to get access to pid in Java but saw no easy way to do it. All my other logic (putting info about the tasks in DB, etc) is done in Java so I'd like to stick with that, but if there are solutions you can suggest in C, C++, or Python I'd appreciate those, too.

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