il server da il seguente errore, sapete come posso risolverlo?

An error occurred at line: 18 in the jsp file: /prova.jsp
Generated servlet error:
C:\Programmi\Apache Software Foundation\Tomcat 5.0\work\Catalina\localhost\test\org\apache\jsp\pr ova_jsp.java:84: reference to Date is ambiguous, both class java.sql.Date in java.sql and class java.util.Date in java.util match
Date currentData = new Date();
^


An error occurred at line: 18 in the jsp file: /prova.jsp
Generated servlet error:
C:\Programmi\Apache Software Foundation\Tomcat 5.0\work\Catalina\localhost\test\org\apache\jsp\pr ova_jsp.java:84: reference to Date is ambiguous, both class java.sql.Date in java.sql and class java.util.Date in java.util match
Date currentData = new Date();
^
2 errors



org.apache.jasper.compiler.DefaultErrorHandler.jav acError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacEr ror(ErrorDispatcher.java:332)
org.apache.jasper.compiler.Compiler.generateClass( Compiler.java:412)
org.apache.jasper.compiler.Compiler.compile(Compil er.java:472)
org.apache.jasper.compiler.Compiler.compile(Compil er.java:451)
org.apache.jasper.compiler.Compiler.compile(Compil er.java:439)
org.apache.jasper.JspCompilationContext.compile(Js pCompilationContext.java:511)
org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:295)
org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet .java:802)