Best online judge with good Java support?
<p>I'm wondering what's a good online judge for just practicing algorithms. I'm currently not very good at writing algorithms, so probably something easy (and least frustrating) would be good.</p>

<p>I've tried the UVA online judge, but it took me about 20 tries to get the first example question right; There was absolutely no documentation on how to read input, etc. I've read about Topcoder, but I'm not really looking to compete, merely to practice.</p>
