What's the difference between boolean and Boolean in Java? [duplicate]

Answer 1

I'm not sure if the GWT factor makes a difference but in general:

boolean is a java primitive type whereas Boolean is an object/reference type that wraps a boolean

Converting between primitives and objects like this is known as boxing/unboxing.

Here is more info:

http://javaeye.wordpress.com/2008/06/17/boxing-and-unboxing-conversion/

Why box you ask?

http://java.sun.com/j2se/1.5.0/docs/guide/language/autoboxing.html

http://www.javapractices.com/topic/TopicAction.do?Id=197