EJB, Web Services, and Microservices

This chapter will explain Java EE 8Web Services and Microservices and their differences. We will introduce the core Web Services standards (SOAP, WSDL, UDDI, XML), and discuss the evolution of Web Services and Microservices support in the Java EE platform. We will also drill down into how you can publish EJB stateless session beans as Web services as well as how to invoke the published Web service from a command-line Java client program and a stateless session bean. Finally, we will show a short example about Microservices using the Spring Boot project.