Web services can be developed from existing JavaBeans.
You can develop a JAX-RPC Web service from JavaBeans. You can also develop a JAX-RPC Web service from an enterprise bean, develop a Web service with an existing Web Services Description Language (WSDL) file using JavaBeans, or develop a Web service with an existing WSDL file using an enterprise bean. In this task, you need develop a new WSDL file.
You can use a bean that already exists and then enable the implementation for Web services. Enabling the bean for Web services includes developing the service endpoint interface, developing a WSDL file that is the description of the Web service, generating and configuring the deployment descriptors, assembling all artifacts required for the Web service, and deploying the application into the WebSphere Application Server environment.
After you deploy the EAR file, test the Web service to make sure that it works with the application server.
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