To check for both null and zero length:
String s = req.getParameter("value");
if (null == s || s.length() == 0) {
// it's null or empty
}
For just null, use (null == s)
...Richard
-----Original Message-----
From: John McDonald [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, January 05, 2000 3:03 PM
To: [EMAIL PROTECTED]
Subject: [SERVLET-INTEREST] Checking for null
I am retrieving a value from a web page with req.getParameter("value"). How
do I check if the string is null without getting a null pointer exception.
Any ideas would be helpful.
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