What is the most common and widely used continues build system for java projects?

[raminaa niilian]

Hi
Can you please let me know what is the most common and widely used continues build system?
I am looking to learn a commerical continues build system and an open source one. But I do not know which ones are popular and widely used.

thanks

[Paul Sturrock]

I think it is Continuous Integration you are asking about?

If so, Cruise Control is a popular open source solution.

In my experience most of the commercial products are aimed at application lifecycle rather than just continuous integration, so its hard to suggest a direct commercial equivalent.

[Edwin Stephens]

I have found Apache's Continuum to be a very easy to use open source solution.
http://continuum.apache.org/

[Peter Johnson]

There is also Hudson.

[Hussein Baghdadi]

After a long time of harvesting the web regarding CI, Hudson and CruiseControl are the most used.
Personally, I promoted Hudson among my team mates.