How to atomically rename a file in Java, even if the dest file already exists?

Question

I have a cluster of machines, each running a Java app.

These Java apps need to access a unique resource.txt file concurently.

I need to atomical

Answer 1

As stated here, it looks like the Windows OS doesn't even support atomic file rename for older versions. It's very likely you have to use some manual locking mechanisms or some kind of transactions. For that, you might want to take a look into the apache commons transaction package.