java basic and advanced concepts

Java is the popular portable language that runs on a variety of platforms, from Windows right up to super powerful mainframes.

The articles in this category will introduce both simple and advanced concepts that are useful when performing java software development.

We will cover various idea such as the java platform, object oriented programming with java, exception handling, setting up development environments and more…

The given SOAPAction http://myurl/url does not match an operation

if you are getting the above error after upgrading from one version of JBoss to another, and you are using Spring, check how you are setting your soapAction in your WebServiceTemplate. After upgrading to WildFly, I found I was getting the above error accessing a SOAP web service that had not really changed. After much …

The given SOAPAction http://myurl/url does not match an operation Read More »

The processing instruction target matching “[xX][mM][lL]” is not allowed

if you are trying to processed an xml file and you get an error such as the one above, there are a number of things to check in the xml… Visible content before the <?xml ?>  declaration. Check for rogue spaces or other characters which can be introduced especially if you have cut and paste …

The processing instruction target matching “[xX][mM][lL]” is not allowed Read More »