Hey guys,

I have a little time and like to program for fun a little bit. So I thought I want to crawl the block chain I have stored on my computer. I have knowledge about Java and asked myself, how the transactions are stored and how can I enter them. Maybe with c++ too learn it, but I prefer Java. I want to anwer questions like "how many transaction with lower input value than 1btc have ever been completed after 1.1.2013" and similar.

Can anyone help me? Maybe I can present some weird facts in a few days or I am just not depenend on others to answer such questions.

Links or guides would be great, if they exist.

thanks