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  • How to properly clean up JDBC resources in Java?

    - by user523086
    What is considered best practices when cleaning up JDBC resources and why? I kept the example short, thus just the cleaning up of the ResultSet. finally { if(rs != null) try{ rs.close(); } catch(SQLException ignored) {} } versus finally { try{ rs.close(); } catch(Exception ignored) {} } Personally I favour the second option since it is a bit shorter. Any input on this is much appreciated.

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  • REST verbs - which convention is "correct"

    - by ctacke
    I'm well into implementing a REST service (on a Windows CE platform if that matters) and I started out using IBM's general definitions of using POST for creating (INSERTs) and PUT for updating. Now I've run across Sun's definitions which are exactly the opposite. So my question is, which is the "generally accepted" definition? Or is there even one?

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  • Recommend Framework for PHP

    - by Simon Guo
    I am gonna develop a simple Content Management Tools for a website. It need to support news update and some general announce. We are planning to use framework and written in PHP. So can someone suggest PHP framework? Thx.

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  • Running a Java program with input from a file

    - by Katy
    I am writing a program that reads the input from a file and then prints it to the screen. When I run it without taking the input from the file, it works perfectly fine. However, every time I try to run it from the file it gives me an "Exception in thread "main" java.util.NoSuchElementException: No line found at" error that occurs every place the input is suppose to be read. I have no idea what is going on.

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  • Loading Java applet from WEB-INF/classes by JSP

    - by Bruce
    Hi guys, Ive got a problem with loading an applet from WEB-INF/classes directory. The main class of an applet (MainApplet.class) is there in the package aaa, but when loading I got the exception java.lang.ClassNotFoundException. Where am I wrong? My jsp is in Web Pages dir. < jsp:plugin type="applet" code="aaa/MainApplet.class" jreversion="1.6" width="700" height="500" Thanks in advance for the reply!

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  • How can I connect to MSMQ over a workgroup?

    - by cyclotis04
    I'm writing a simple console client-server app using MSMQ. I'm attempting to run it over the workgroup we have set up. They run just fine when run on the same computer, but I can't get them to connect over the network. I've tried adding Direct=, OS:, and a bunch of combinations of other prefaces, but I'm running out of ideas, and obviously don't know the right way to do it. My queue's don't have GUIDs, which is also slightly confusing. Whenever I attempt to connect to a remote machine, I get an invalid queue name message. What do I have to do to make this work? Server: class Program { static string _queue = @"\Private$\qim"; static MessageQueue _mq; static readonly object _mqLock = new object(); static void Main(string[] args) { _queue = Dns.GetHostName() + _queue; lock (_mqLock) { if (!MessageQueue.Exists(_queue)) _mq = MessageQueue.Create(_queue); else _mq = new MessageQueue(_queue); } Console.Write("Starting server at {0}:\n\n", _mq.Path); _mq.Formatter = new BinaryMessageFormatter(); _mq.BeginReceive(new TimeSpan(0, 1, 0), new object(), OnReceive); while (Console.ReadKey().Key != ConsoleKey.Escape) { } _mq.Close(); } static void OnReceive(IAsyncResult result) { Message msg; lock (_mqLock) { try { msg = _mq.EndReceive(result); Console.Write(msg.Body); } catch (Exception ex) { Console.Write("\n" + ex.Message + "\n"); } } _mq.BeginReceive(new TimeSpan(0, 1, 0), new object(), OnReceive); } } Client: class Program { static MessageQueue _mq; static void Main(string[] args) { string queue; while (_mq == null) { Console.Write("Enter the queue name:\n"); queue = Console.ReadLine(); //queue += @"\Private$\qim"; try { if (MessageQueue.Exists(queue)) _mq = new MessageQueue(queue); } catch (Exception ex) { Console.Write("\n" + ex.Message + "\n"); _mq = null; } } Console.Write("Connected. Begin typing.\n\n"); _mq.Formatter = new BinaryMessageFormatter(); ConsoleKeyInfo key = new ConsoleKeyInfo(); while (key.Key != ConsoleKey.Escape) { key = Console.ReadKey(); _mq.Send(key.KeyChar.ToString()); } } }

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  • Resolving "require"s when executing IronRuby from C#

    - by James Sulak
    I'm attempting to run an IronRuby script from C#: var runtime = IronRuby.Ruby.CreateRuntime(); runtime.ExecuteFile("ruby/foo.rb"); foo.rb starts with a "require:" #!/usr/bin/env ruby require 'bar' When I try this, I get an exception stating "no such file to load -- bar." The file "bar.rb" and the directory "bar" are both present in the "ruby" directory. So, how do I execute a ruby script that requires other ruby files? I'm targeting .Net 3.5.

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  • What are your feelings on JavaFX?

    - by ForYourOwnGood
    I currently do a lot of work in ActionScript 3.0, I also love to program in Java. Is JavaFX perfect for me? What is the general feeling on JavaFX, will it become a power house, or go down the same path as Java Applets? Could the designers I work with become comfortable with JavaFX to the same extent they are comfortable with ActionScript and JavaScript?

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  • How do I tie a cmbBox that selects all drives (local and network) into a treeNode VB

    - by jpavlov
    How do i tie in a selected item from a cmbBox with a treeView? I am looking to just obtain the value of the one selected drive Thanks. Imports System Imports System.IO Imports System.IO.File Imports System.Windows.Forms Public Class F_Treeview_Demo Private Sub F_Treeview_Demo_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load ' Initialize the local directory treeview Dim nodeText As String = "" Dim sb As New C_StringBuilder With My.Computer.FileSystem 'Read in the number of drives For i As Integer = 0 To .Drives.Count - 1 '** Build the drive's node text sb.ClearText() sb.AppendText(.Drives(i).Name) cmbDrives.Items.Add(sb.FullText) Next End With ListRootNodes() End Sub Private Sub btnExit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExit.Click Application.Exit() End Sub Private Sub tvwLocalFolders_AfterSelect(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeViewEventArgs) _ Handles tvwLocalFolders.AfterSelect ' Display the path for the selected node Dim folder As String = tvwLocalFolders.SelectedNode.Tag lblLocalPath.Text = folder ListView1.Items.Clear() Dim childNode As TreeNode = e.Node.FirstNode Dim parentPath As String = AddChar(e.Node.Tag) End Sub Private Sub AddToList(ByVal nodes As TreeNodeCollection) For Each node As TreeNode In nodes If node.Checked Then ListView1.Items.Add(node.Text) ListView1.Items.Add(Chr(13)) AddToList(node.Nodes) End If Next End Sub Private Sub tvwLocalFolders_BeforeExpand(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeViewCancelEventArgs) _ Handles tvwLocalFolders.BeforeExpand ' Display the path for the selected node lblLocalPath.Text = e.Node.Tag ' Populate all child nodes below the selected node Dim parentPath As String = AddChar(e.Node.Tag) tvwLocalFolders.BeginUpdate() Dim childNode As TreeNode = e.Node.FirstNode 'this i added Dim smallNode As TreeNode = e.Node.FirstNode Do While childNode IsNot Nothing ListLocalSubFolders(childNode, parentPath & childNode.Text) childNode = childNode.NextNode ''this i added ListLocalFiles(smallNode, parentPath & smallNode.Text) Loop tvwLocalFolders.EndUpdate() tvwLocalFolders.Refresh() ' Select the node being expanded tvwLocalFolders.SelectedNode = e.Node ListView1.Items.Clear() AddToList(tvwLocalFolders.Nodes) ListView1.Items.Add(Environment.NewLine) End Sub Private Sub ListRootNodes() ' Add all local drives to the Local treeview Dim nodeText As String = "" Dim sb As New C_StringBuilder With My.Computer.FileSystem For i As Integer = 0 To .Drives.Count - 1 '** Build the drive's node text sb.ClearText() sb.AppendText(.Drives(i).Name) nodeText = sb.FullText nodeText = Me.cmbDrives.SelectedItem '** Add the drive to the treeview Dim driveNode As TreeNode driveNode = tvwLocalFolders.Nodes.Add(nodeText) 'driveNode.Tag = .Drives(i).Name '** Add the next level of subfolders 'ListLocalSubFolders(driveNode, .Drives(i).Name) ListLocalSubFolders(driveNode, nodeText) 'driveNode = Nothing Next End With End Sub Private Sub ListLocalFiles(ByVal ParentNode As TreeNode, ByVal PParentPath As String) Dim FileNode As String = "" Try For Each FileNode In Directory.GetFiles(PParentPath) Dim smallNode As TreeNode smallNode = ParentNode.Nodes.Add(FilenameFromPath(FileNode)) With smallNode .ImageIndex = 0 .SelectedImageIndex = 1 .Tag = FileNode End With smallNode = Nothing Next Catch ex As Exception End Try End Sub Private Sub ListLocalSubFolders(ByVal ParentNode As TreeNode, _ ByVal ParentPath As String) ' Add all local subfolders below the passed Local treeview node Dim FolderNode As String = "" Try For Each FolderNode In Directory.GetDirectories(ParentPath) Dim childNode As TreeNode childNode = ParentNode.Nodes.Add(FilenameFromPath(FolderNode)) With childNode .ImageIndex = 0 .SelectedImageIndex = 1 .Tag = FolderNode End With childNode = Nothing Next Catch ex As Exception End Try End Sub Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmbDrives.SelectedIndexChanged End Sub Private Sub lblLocalPath_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles lblLocalPath.Click End Sub Private Sub grpLocalFileSystem_Enter(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles grpLocalFileSystem.Enter End Sub Private Sub btn1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn1.Click ' lbl1.Text = End Sub Private Sub ListView1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListView1.SelectedIndexChanged End Sub End Class

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  • BeanCreationException in Spring Framework .WAR deploy to Tomcat 6 on Ubuntu 9.10

    - by JediPotPie
    I am in the process of switching from a Windows box to Ubunutu and I want to run my own local instance of Tomcat 6. I have installed Tomcat 6 without any basic issues. When I try to deploy a .war file that I had running on the Tomcat 6 instance on my Windows box I am getting the following error.... Apr 26, 2010 3:30:27 PM org.apache.catalina.core.ApplicationContext log INFO: Initializing Spring root WebApplicationContext Apr 26, 2010 3:30:27 PM org.apache.catalina.core.StandardContext listenerStart SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [com.ameren.eam.ldap.LdapDAONovellImpl] for bean with name 'testNovellDao' defined in ServletContext resource [/WEB-INF/applicationContext.xml]; nested exception is java.lang.ClassNotFoundException: com.ameren.eam.ldap.LdapDAONovellImpl at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1173) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:479) at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:787) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:393) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:736) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:369) at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:261) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3934) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4429) at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1249) at org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java:612) at org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:136) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:269) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAsPrivileged(Subject.java:537) at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:301) at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:162) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:283) at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:56) at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:189) at java.security.AccessController.doPrivileged(Native Method) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:185) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) at java.lang.Thread.run(Thread.java:636) Caused by: java.lang.ClassNotFoundException: com.ameren.eam.ldap.LdapDAONovellImpl at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1399) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1245) at org.springframework.util.ClassUtils.forName(ClassUtils.java:230) at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:381) at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1170) ... 40 more The class that is not being found is located at /WEB-INF/classes/com/ameren/eam/ldap/LdapDAONovellImpl.class relative to /WEB-INF/applicationContext.xml. I cannot figure out why it cannot find the class? Any ideas would be great.

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  • Which is clearer form: if(!value) or if(flag == value) ?

    - by CodexArcanum
    I understand this is a subjective question, so I apologize if it needs to be closed, but I feel like it comes up often enough for me to wonder if there is a general preference for one form over the other. Obviously, the best answer is "refactor the code so you don't need to test for falsehood" but sometimes there's no easy way to do so and the "else" branch is simply to continue processing. So when you must have an "if not false" construct, which is the preferred standard: The not operator if(!value) Or the test for false if(value == false)

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  • Question about DispatcherUnhandledException

    - by Diego Pacheco
    The problem in this code is that when it's run and I push "Yes" button, This is shown: This means that my application stopped working, I just want it to end. private void App_DispatcherUnhandledException(object sender, DispatcherUnhandledExceptionEventArgs e) { string message = "An unhandled exception has ocurred, do you want close the app?"; MessageBoxResult currentMB = MessageBox.Show(message, "SomeTitleApp", MessageBoxButton.YesNo, MessageBoxImage.Exclamation); if (currentMB == MessageBoxResult.Yes) { Application.Current.Shutdown(); } else { e.Handled = true; } }

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  • How to add jarray Object into JObject

    - by user2882431
    How to add JArray into JObject? I am getting an exception when changing the jarrayObj into JObject. parameterNames = "Test1,Test2,Test3"; JArray jarrayObj = new JArray(); foreach (string parameterName in parameterNames) { jarrayObj.Add(parameterName); } JObject ObjDelParams = new JObject(); ObjDelParams["_delete"] = jarrayObj; JObject UpdateAccProfile = new JObject( ObjDelParams, new JProperty("birthday", txtBday), new JProperty("email", txtemail)) I need output in this form: { "_delete": ["Test1","Test2","Test3"], "birthday":"2011-05-06", "email":"[email protected]" }

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  • Unit testing class in a web service in .net

    - by Dan Bailiff
    After some digging here, I took the advice in this thread: http://stackoverflow.com/questions/371961/how-to-unit-test-c-web-service-with-visual-studio-2008 I've created a separate class and my web service class is just a wrapper for that one. The problem is that when I try to create a unit test project in VS2008, it insists on creating a unit test that acts like I'm testing the web service calls instead of the class I specified. I can't get to the class I'm trying to test. I have a web service "subscription_api.asmx". The code behind is "subscription_api.cs" which contains the web method wrapper calls to the real code at "subscription.cs". I would expect to be able to do the following: [TestMethod()] public void GetSystemStatusTest() { subscription sub = new subscription(); XmlNode node = sub.GetSystemStatusTest(); Assert.IsNotNull(node); } But instead I get this mess which is autogenerated from VS'08: /// <summary> ///A test for GetSystemStatus ///</summary> // TODO: Ensure that the UrlToTest attribute specifies a URL to an ASP.NET page (for example, // http://.../Default.aspx). This is necessary for the unit test to be executed on the web server, // whether you are testing a page, web service, or a WCF service. [TestMethod()] [HostType("ASP.NET")] [AspNetDevelopmentServerHost("C:\\CVSROOT\\rnr\\pro\\product\\wms\\ss\\subscription_api", "/subscription_api")] [UrlToTest("http://localhost/subscription_api")] public void GetSystemStatusTest() { subscription_Accessor target = new subscription_Accessor(); // TODO: Initialize to an appropriate value XmlNode expected = null; // TODO: Initialize to an appropriate value XmlNode actual; actual = target.GetSystemStatus(); Assert.AreEqual(expected, actual); Assert.Inconclusive("Verify the correctness of this test method."); } Additionally, there is a "subscription_api.accessor" in the Test References folder. When I try this: [TestMethod()] public void GetSystemStatusTest2() { subscription_Accessor sub = new subscription_Accessor(); XmlNode node = sub.GetSystemStatus(); Assert.IsNotNull(node); } I get an error: Test method subscription_api.Test.subscriptionTest.GetSystemStatusTest2 threw exception: System.TypeInitializationException: The type initializer for 'subscription_Accessor' threw an exception. ---> System.ArgumentNullException: Value cannot be null. I'm really new to unit testing and feel lost. How can I create a unit test just for my subscription class in "subscription.cs" without testing the web service? Am I limited to testing within the same project (I hope not)? Do I have to put the target class in its own project outside of the web service project?

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  • How to rectify this issues: asp.net PageRequestManagerParserErrorException

    - by sameer
    i have a search panel where on click of search button im getting this exception this is for the first time, subsequent click it result the proper result. Can any one explain how solve the issue. error message: Sys.WebForms.PageRequestManagerParserErrorException: The Message received from the server could not be parsed.Coommon causes for this error are when the response is modified by Calls to Repose.Write(), response filters,HttpModules, or server trace is enabled. Details:Error Parsing near ' | '.

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  • RESTful resource not found. 404 or 204? Jersey returns 204 on null being returned from handler.

    - by jr
    If you are looking for /Resource/Id and that resource does not exist, I had always though that 404 was the appropriate response. However, when returning "null" from a Jersey handler, I get back a "204 No Content". I can likely work with either one, but am curious to others thoughts on this. To answer my own next question. To get jersey to return 404 you must throw an exception. if (a == null) throw new WebApplicationException(404);

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  • C - How to implement Set data structure?

    - by psihodelia
    Is there any tricky way to implement a set data structure (a collection of unique values) in C? All elements in a set will be of the same type and there is a huge RAM memory. As I know, for integers it can be done really fast'N'easy using value-indexed arrays. But I'd like to have a very general Set data type. And it would be nice if a set could include itself.

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  • Is it possible to render a template from middleware?

    - by pajton
    I have a middleware that does some processing. On certain conditions it raises an exception and the user sees my 500.html template - correctly responding to 500 http status. Now, on some exceptions I would like to render different template than default 500.html. Is it possible/how to achieve that?

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  • How to resolve this PostgreSQL error on OS 10.6 (Snow Leopard)

    - by wgpubs
    I followed the instructions for setting up postgresql from this site All seems to go fine until I try: createuser --superuser myname -U postgres I get the following exception: createuser: could not connect to database postgres: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/tmp/.s.PGSQL.5432"? For the life of me I can't figure out how to resolve this. Any ideas???

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  • Zend Framework Module Based Error Handling

    - by cnkt
    Zend_Controller_Plugin_ErrorHandler always forwards to ErrorController::errorAction() in the default module but i want it be module aware. For example when a exception throws it must be call the module's ErrorController like Admin_ErrorController:errorAction. How can i do this? Thanks.

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  • C++ performance, for versus while

    - by aaa
    hello. In general (or from your experience), is there difference in performance between for and while loops? What if they are doubly/triply nested? Is vectorization (SSE) affected by loop variant in g++ or Intel compilers? Thank you

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  • Java Beginner question about String[] args in the main method

    - by happysoul
    So I just tried excluding String[] args from the main method It compiled alright ! But JVM is showing an exception Why did it compile when String[] args HAS to be included every time ? What is going on here ? Why won't it show a compilation error ? typing this made me think that may be compiler did not see it as THE main method ..is that so ?

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