Simple java web application with database using netbeans

I’ve built and run the project. When I click the OK button for , an error page displays indicating that is not available.

Have you looked in the IDE’s Output window (Ctrl-4) in the project tab or in the server tab?

What error messages are there? What JDK does your project use? What server? JDK 7 requires GlassFish 3.x or Tomcat 7.x. Right-click the project’s node in the Projects window and select Properties.

Netbeans tutorial

The JDK is in the Libraries category, in the Java Platform field. The server version is in the Run category. Lastly, download + the sample project+ and compare it with your own.

I’ve built and run the project but no name appears, only "Hello, !"

Does your <jsp:setProperty> tag contain a attribute?

This overwrites the value you passed in the form and replaces it with an empty string.

Delete the attribute.

I’ve built and run the project but get "Hello, null!"

First, check the IDE’s Output windows for both application and server, and the server log. Is the server running?

Was the application deplo