first.. that immpossble. (hide ur absolute URL)
an easy method.
make a index.jsp that is have frameset.
ex)
index.jsp
<html>
<head>
<title>
Test Index.jsp For Hide URL</title>
</head>
<frameset rows="100%,*" frameborder="NO" border="0" framespacing="0">
<frame src="index2.jsp" name="mainFrame" scrolling="AUTO" noresize marginwidth="0" marginheight="0">
<frame src="blank.jsp" name="dummy" marginwidth="0" marginheight="0">
</frameset>
</html>
i say... make frame...