JAXB and constructors

Question

I\'m starting learning JAXB, so my question can be very silly. Now I have classes and want generate XML Schema. Going after this instruction I get exception

Answer 1

JAXB re-creates beans from XML in a simple fashion : it creates a new instance of the bean, and then do all the setXXX needed to set the attributes. So, if your bean doesn't have a no-args constructor, JAXB can't create it. As said in other answers, JAXB works better for simple "container" beans, for which no-args constructor isn't really a problem. If you're trying to create beans that need specific initialization, you'll need to do it in the setXXX methods.