user16885: I am developing a JSP web (based on Java) and I would like to let users send the altcoins to my servers wallet. I need something what would monitor if the coins (DOGE/BTC etc.) has arrived and just after that let the users do something. 
Is there anything like this? I am new here and maybe it is broad but let me explain better if you need. 
I mean something like this: http://bitcoinj.github.io/getting-started
but not only for BTC also for other coins.

user6693: for example you can subscribe to unconfirmed transaction on the blockchain websocket and monitor when your addresses appear in the flow. 

16885: <p>I am developing a JSP web (based on Java) and I would like to let users send the altcoins to my servers wallet. I need something what would monitor if the coins (DOGE/BTC etc.) has arrived and just after that let the users do something. </p>

<p>Is there anything like this? I am new here and maybe it is broad but let me explain better if you need. </p>

<p>I mean something like this: <a href="http://bitcoinj.github.io/getting-started" rel="nofollow">http://bitcoinj.github.io/getting-started</a></p>

<p>but not only for BTC also for other coins.</p>
 6693: <p>for example you can subscribe to unconfirmed transaction on the <a href="https://blockchain.info/it/api/api_websocket" rel="nofollow">blockchain websocket</a> and monitor when your addresses appear in the flow. </p>
