empty : Java Glossary

go to home page E words local find full screen, hide local find menu Google search web for more information on this topic jump to foot of page translate this page with Babelfish punctuation 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z (all) ©1996-2009 Roedy Green, Canadian Mind Products
empty
A zero-length String. i.e. x.length() == 0, e.g. "". If the empty String is interned, you can detect it with: 
if ( x == "" )
If not, you must use: 
if ( x == null || x.length() == 0 )
One of the most common sources of error in Java programs comes from confusing the three different flavours of void strings: blank, empty and null.
blank
intern
literal
null
void
CMP homejump to top You can get the freshest copy of this page from: or possibly from your local J: drive (Java virtual drive/mindprod.com website mirror)
http://mindprod.com/jgloss/empty.html J:\mindprod\jgloss\empty.html
CMP logofeedback Please email your feedback for publication, errors, omissions, typos, formatting errors, ambiguities, unclear wording, broken/redirected link reports, suggestions to improve this page or comments to Roedy Green : feedback email
mindprod.com IP:[65.110.21.43]
view BlogYour face IP:[38.107.191.105]
You are visitor number 15,544.