Only persistence units with transaction type JTA can be used as a container managed entity manager
NetBeans can use multiple deployment servers. When your web application uses the Entity Framework and you select the Glassfish server as the deployment server, you can get the error message when you try to run your application in the IDEÉ Severe:…
Start a new Spring MVC Java Web application development in NetBeans
When you create your first Spring MVC Java web application in the base installation of NetBeans follow the steps below Create a project In the File menu select New Project… Select the Java Web category, select the Web Application project, and click…
PyCharm configuration
When you install PyCharm, the default Python interpreter is may not the version you want to use for your new projects. When you create a new project, and the project interpreter is not set, you may get the following error message: Executed command:…
Working with PyCharm
Project management Create a new project in PyCharm In the File menu select New Project…, On the left side select the Python framework you want to use, Enter the name for your project to the end of the Location path, If you have selected a framework…
error: package … does not exist in NetBeans
If your Java source code imports packages, you have to add the JAR files containing them to the Library. When you try to compile your Java application in NetBeans, and you get the error message: error: package … does not exist In the NetBeans…
The .NET MVC model has to have a parameterless constructor
When you create a class to be used as the model in a .NET MVC application, the class has to have a parameterless constructor. It is called during the POST when the user clicks the submit button of the form. If the class does not have a parameterless…
An error occurred while signing
When you deploy and application in Microsoft Visual Studio with ClickOnce, you need to sign the installer with a key. To sign the project Visual Studio needs to use the signtool. If the ClickOnce feature is not enabled in Visual studio, it displays the…
No mapping specified for instances of the EntitySet and AssociationSet in the EntityContainer
When you move your Visual Studio solution to another workstation you may encounter the following error message: System.Data.Entity.Core.MappingException was unhandled by user code HResult=-2146232032 Message=Schema specified is not valid. Errors: : error…
Save the key file password in Visual Studio
When you have already set up the project signing of the C# application for ClickOnce deployment, and move the solution to another workstation you may get the following error message when you build the solution: Severity Code Description Project File Line…
Include PBD files in ClickOnce deployment to show the line numbers in the Stack Trace
If there is an error in an application, the line numbers are only included in the Stack Trace when the PBD files are also in the application directory. To include the PBD files in an application that was distributed with ClickOnce deployment you need to:…