Is there some place on the internet where I can run my Java program?

A program I am working on takes forever to complete (~3days, everytime).

Is there some place on the internet where I can leave the code, some robot might run it for me and I can come back and collect the results? Some online judge that offers this capability?

[I am n开发者_如何学编程ot talking abt optimisations here.]

You may need to go to something like this:

Amazon Elastic Compute Cloud (Amazon EC2) is a web service that provides resizable compute capacity in the cloud. It is designed to make web-scale computing easier for developers.

http://aws.amazon.com/ec2/

If you really cannot run it on your own machines, you can run in on Amazon EC2 cloud. You would need to maintain a virtual machine, but Amazon provides some preconfigured settings.

The pricing starts with $0.085/hour (~$6 for three days). The actual price is determined by the duration of use and your CPU needs. Higher CPU capability is more expensive.