What is difference Javax.jws and javax.xml.ws

I am new to Java and trying to jump into WebServices. I found two examples somewhere and I am confused with the available options.

Firstly, javax.jws.WebService with annotation seem to work fine, but there is loads of material on javax.xml.ws. It seems javax.jws is newer and there is not much material available about it.

What is the difference between these two approaches?