Finding and showing file date/time i'm referencing on

Question

How can I find and show on page the date and time parameters of file on which i'm referencing with using an JSP? I tried it with java.io.*,
<%@ page import="java.io.*"%>
<%@ page import="java.awt.*,javax.swing.text.*"%>
<%@ page contentType="text/html; charset=windows-1250"%>
<%
File u_file=new File("http://oracle1/pn/index.html");
long dat=u_file.lastModified();
Date u_date=new Date(dat);
%>
<%=u_file.getPath()%>
<%=u_file.getName()%>
<%=u_file.isFile()%>
<%=u_date%>
but the date was always 0(1.1.1970) ,result of isFile was null, but result of Pathname and Name was correct.
What is wrong?

Answer 1

From the JSP, if you say, File file = new File(path);
It will try to search for the file starting from the bin directory (I am using tomcat). So, you need to give the full path to the file from there.
For example, if your file is in, webapps/examples/html/ directory, you need to use something like this,
File file = new File("../webapps/examples/html/index.html");
You can't give URL as the file name/path. You can't access Oracle's file system!!!
Hope this helps.
Sudha