<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html >
<html>
<%! int i=0; %>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<% String strColor=request.getParameter("color"); 
	if(strColor==null)
	{
		strColor="white";				
	}

%>
<body bgcolor=" <%= strColor%> ">
	<form>
		color:<input type="text"  name="color" />
		<input type="submit"  text="ok" />
	</form>
	<hr>
	<%
	  ++i;
	  out.println(i);
	%>
	
	
</body>
</html>