What kind of OCR Java library should I use in Android? [closed]

I would like to build an Android application that, via an OCR library, should scan a picture extracting text from it .

What Java library should I use?

Don't know how good it is (it definitely needs to be trained first), but there is Ron Cemer's Java OCR library.

If you are looking for a very extensible option or have a specific problem domain you could consider rolling your own using the Java Object Oriented Neural Engine.

I used it successfully in a personal project to identify the letter from an image such as this, you can find all the source for the OCR component of my application on github, here.