I am setting up a web application on my machine. It uses EJB to access the data in a MySQL database. When I attempt to access the website, I get an EJB exception saying, "could not create a connection". I checked all configuration files but they look alright. Please help me to get to the bottom of this problem.

The application we are developing requires to find the levels of authority for a given user. The levels of authority follows a hierarchical tree like structure. An employee can have any number of supervisors. In order to traverse the tree structure, it is proposed to use recursion or a loop. What would be better?

Could someone explain me what is Recursion or recursive function?

Hello techyV experts.

Dependency injection error in Java server faces managed form bean (Java 6 and JSF 2.0)I need help in diagnosing a dependency injection problem. I have a class in my web project that is calling an EJB3 bean.

I am using JSF 2.0 and have a managed bean that is handling the user interface. The managed bean is set as Request Scope. I am getting a null reference exception when i attempt to access the EJB reference in the constructor.

I have installed the JRE and JDK both on my pc (windows xp sp3) but when I try to compile with javac, it is not recognised! Please help, I have an assignment to complete!!

Hey,

We are planning to migrate from Struts to JSF. Can someone suggest a good JSF framework with good UI components?

Hi Experts of techyv

How does the garbage collection work in Java?

Thanks in advance

I see CPU starvation messages on my Websphere server logs but there has been no impact on our application. Is this something I should be worried about? How can I find the cause for this?

Hi, sometimes when I run my Java code, I get some exceptions but no stacktrace. I have encountered these even in debug mode. Does anyone know what I might be doing wrong?