It is very good to use, it's easy to understand, has great documentation, and all you need to learn about grails is how to write groovy classes and packages with annotations! I have never used any other Java development frameworks like Spring before using grails so I cannot say anything bad about that. The only downside of this software was that sometimes when i try to run my code from within eclipse or command line (using terminal) it gives me errors which makes debugging difficult. Also the performance may be slow at times because of its heavy usage of memory. I highly recommend anyone who wants to develop their own server side applications with java language to give this tool a chance. This tool allows us to do what we usually would not be able to do in regular programming languages such as PHP/C++ etc.
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