Using Abstract Classes

        <%!
            javax.servlet.jsp.JspWriter localOut;

            abstract class a
            {
                abstract String getText() throws java.io.IOException;

                public void printem() throws java.io.IOException 
                {
                    localOut.println(getText());
                }
            }

            class b extends a
            {
                String getText() throws java.io.IOException 
                {
                    return "Hello from JSP!";
                }
            }
        %>     
        <%
            localOut = out;     

            b bObject = new b();

            bObject.printem();
        %>