| CalculatorLocal | Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. | code | html |
| CalculatorRemote | This is an EJB 3 remote business interface A remote business interface must be annotated with the @Remote annotation | code | html |
| CalculatorWs | This is an EJB 3 webservice interface A webservice interface must be annotated with the @Local annotation. | code | html |
| CalculatorImpl | This is an EJB 3 style pojo stateless session bean Every stateless session bean implementation must be annotated using the annotation @Stateless This EJB has a single interface: CalculatorWs a webservice interface. | code | html |