Developers get into tricky situations while programming. Some syntax problem or any specific feature about Java, there are lots of confusions and doubts which we encounter. Best way is to ask community alike. This time, we have collected best Java communities and forums where you can post your doubts and errors, find resources, ask questions and get them answered by other java developers. These resources are authenticated and popular among Java developers. Have a look at these top Java forums.

(more…)

Exception handling in web application is indeed a tricky task and it varies according to scenarios. There are no fix rules but yes I will give you a generic idea about better way of exception handling. Generally well structured application has four layers: Presentation Layer (JSP/HTML), Business Logic Layer (POJO containing business logic) and Database Access Layer (POJO to interact with Databse) and Data Layer(Database itself). First I will enlist all possible exception handling strategies and then describe suitable strategy for each layer. (more…)

Hope you guys have enjoyed previous article, MultiActionController Example. Now, let’s move on to UrlFilenameViewController. It transforms the virtual path of a URL into a view name and returns the view, that’s it. It is useful when you don’t need any logical operation on request and simply wants to redirect to some resource. For example, each site has ‘Contact Us’, ‘About Us’ pages. To map those pages UrlFilenameViewController is a good choice. Let’s see the example.

(more…)