I have a GUI with a JPassword field named pswrd. When I read the entered password I save it in a String named password and trim to get out leading and trailing empty spaces (user pressed the space bar).
but when I print the password (using a JOptionPane)
to check that the empty spaces are gone, they never are. Why, and what can I do about it? Thanks!
This is a standard mistake when working with Strings. Strings are immutable, meaning they do not change. The syntax "password.trim();" does nothing to the original String, it simply returns a NEW String with the spaces trimmed off. The following modification will work: password = password.trim(); Hope this helps. Joe
Hello, Hope this too clarify the answer, according to the API specification of the String class, trim() Returns a copy of the string, with leading and trailing whitespace omitted. Important thing to note here is that, it returns a String. Better check the API if you get similar problems. Cheers...........
SCJP 1.4, SCMAD 1.0<br />SCWCD, SCBCD (in progress)