RSS Feed
Download our iPhone app
Browse DevX
Sign up for e-mail newsletters from DevX

By submitting your information, you agree that devx.com may send you DevX offers via email, phone and text message, as well as email offers about other products and services that DevX believes may be of interest to you. DevX will process your information in accordance with the Quinstreet Privacy Policy.


Tip: Testing for String Equality

See an example of the best way to check for string equality.




Building the Right Environment to Support AI, Machine Learning and Deep Learning

if (name.compareTo("Jerry") == 0) ...
if (name == "Jerry") ...
if (name.equals("Jerry")) ...
if ("".equals(name)) ...

All the above comparisons are correct, but they are not great. The compareTo method is overkill and too diffuse. The == operator tests the object identity, which is not desirable. The equals method is OK, but reversing the constant and variable give you extra security if the name is null.

if ("Jerry".equals(name)) ...
if (name.length() == 0) ...
if (name.isEmpty()) ... 


Visit the DevX Tip Bank


Octavia Andreea Anghel is a senior PHP developer currently working as a primary trainer for programming teams that participate at national and international software-development contests. She consults on developing educational projects at a national level. She is a coauthor of the book "XML Technologies--XML in Java" (Albastra, ISBN 978-973-650-210-1), for which she wrote the XML portions. In addition to PHP and XML, she's interested in software architecture, web services, UML, and high-performance unit tests.
Comment and Contribute






(Maximum characters: 1200). You have 1200 characters left.



Thanks for your registration, follow us on our social networks to keep up-to-date