REST services are very in so you might want to read this article (Configuring JSON for RESTful Web Services in Jersey 1.0) on how to use the Jersey REST framework. RESTlets is another Java API trying to standardize how to develop REST services using Java.
RESTlets in Jersey
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lekkim
Positive, competent, out-spoken, frank and customer focused architect and developer with a strong foundation in web, cloud and product development. I'm a strong advocate for API first and cloud based solutions and development. I have a knack for being able to communicate and present technically complicated matters in conference, customer and training settings. I've previously acted as team member and leader in a product organisation. View all posts by lekkim