Your not just comparing for null, you're comparing for empty strings as
well.
try this,
String userName = request.getParameter("UserName");
if (userName != null && userName.trim().equals("") == false)
-----Original Message-----
From: Nevarez, Benjamin [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, May 09, 2001 11:57 AM
To: [EMAIL PROTECTED]
Subject: Re: comparing null
This works all the time
if (request.getParameter("username") != null) {
...
}
Benjamin
-----Original Message-----
From: drew w [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, May 09, 2001 11:16 AM
To: [EMAIL PROTECTED]
Subject: comparing null
String Uname = request.getParameter( "UserName" );
String Pword = request.getParameter( "PassWord" );
if (Uname == null){ //////<< this never works, I have tried =="" and .equals
any ideas?
String pMsg = "Please enter a username and password.";
session.setAttribute( "Msg", pMsg );
response.sendRedirect("index.jsp");
if (Uname == null){ //////<< this never works
I have tried =="" and .equals(null) any ideas would be much appreciated?
_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com
===========================================================================
To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff
JSP-INTEREST".
For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST
DIGEST".
Some relevant FAQs on JSP/Servlets can be found at:
http://java.sun.com/products/jsp/faq.html
http://www.esperanto.org.nz/jsp/jspfaq.html
http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
===========================================================================
To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff
JSP-INTEREST".
For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST
DIGEST".
Some relevant FAQs on JSP/Servlets can be found at:
http://java.sun.com/products/jsp/faq.html
http://www.esperanto.org.nz/jsp/jspfaq.html
http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
===========================================================================
To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST".
For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST DIGEST".
Some relevant FAQs on JSP/Servlets can be found at:
http://java.sun.com/products/jsp/faq.html
http://www.esperanto.org.nz/jsp/jspfaq.html
http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
