Difference between Web Service Developer and Web Compononent Developer?

What's the difference between Web services Developer and Web Component Developer? What's their job description. I'm aiming to be a web application developer. Which track should I follow?

Here is another article on J2SE vs JEE:
http://www.velocityrevies.com/forums/t151124-what-is-j2se-vs-j2ee.html
I believe the people who said JSE is only for desktop development are not correct, as well as their saying their are 2 kinds of developer (web service and component).
As I understand it, web service developers provide a way to expose the data and functionality of a program written in a particular language (such as Java or C#) as XML documents to anyone subscribing to the service over the internet. The remote applications subscribing to the service therefore can be written in any other language. For example, imagine a Cobol program trying to get data from a program written in Java. Since both cobol and Java should have ways to parse XML documents, they don't have to know each other's syntax. There are many programs written in many many languages in the web and XML is a standard way for them to communicate. Web Services are an advanced topic and you shouldn't worry about it until you master web applications and/or desktop applications.
As I understand it, a web component developer creates java widgets that produce some visual image with basic functionality associated with it. For example, an html button. These widgets are used by other developers for the presentation layer when creating a web application or desktop application. I'm not sure about this definition since I never messed with web component development. I suggest you keep way from this specialized area on concentrate on web applications and/or desktop applications.
You can consider application development as devided into two general categories. Web development and Desktop development (there are others). Web development is further broken down into browser based applications and mobile device applications. I suspect their are more jobs in web development than desktop development. I therefore suggest you concentrate on browder based web development (just my opinion). However, each has their advantages and disadvantages over each other, depending on the task at hand(http://stackoverflow.com/questions/905365/desktop-development-versus-web-development)
Disclaimer:
http://myweb.accessus.net/~090/univdisc.html

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