Hi There,
You could do the check test.length() > 0
Pete
-----Original Message-----
From: Carl Olivier [mailto:[EMAIL PROTECTED]
Sent: 24 June 2004 17:18
To: 'Tomcat Users List'
Subject: RE: how to check if a String is empty?
There is a trim() funtion in java.lang.String
?
-----Original Message-----
From: Marten Lehmann [mailto:[EMAIL PROTECTED]
Sent: 24 June 2004 06:20 PM
To: 'Tomcat Users List'
Subject: how to check if a String is empty?
Hello,
maybe this is not the perfect group for my question, but as my problem
appears at the development of JSPs and tomcat is concerned with that, I
hope you can answer it.
I often see the condition
String test = req.getParameter("test");
if (test == null) {
/* string is empty */
} else {
/* string contains something */
}
But if test contains just blanks and other whitespaces, it's not null,
but doesn't contain usable data anyhow. How can I check if a string
contains whitespaces only? I though of something like
if (test == null || test.trim().equals("")) {
}
but there's no trim()-function, right? How do you solve this problem?
With whitespaces I mean blanks, tabs and newlines.
Regards
Marten
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
