:( I must be doing something wrong. I even made very base interface (Calculator.java) like in the example but I am always getting the same error. Class Cast Exception. please give me a hint what I am doing wrong. below all important code. (I had rather included it.) thanks in advance //baseBean.java package beans; public interface baseBean { public String hello(); } //baseRemote.java package beans; import javax.ejb.Remote; @Remote public interface baseRemote extends baseBean{ //public String hello(); } //testBean package beans; import javax.ejb.Stateless; @Stateless(name = "testBean") public class testBean implements baseRemote { public testBean() { } public String hello() { return "Hello from bean"; } } //index.jsp <% InitialContext ctx = new InitialContext(); try { Object obj = ctx.lookup("testBean/remote"); //baseRemote testRemote = (baseRemote) PortableRemoteObject.narrow(obj, baseRemote.class); baseBean bean = (baseBean)obj; out.print(bean.hello()); //out.print(testRemote.hello()); } catch (Exception e) { e.printStackTrace(); } %> View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4120440#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...