Play.classloader.getResourceAsStream(filepath);
filepath - relative to what? project root? playframework root? absolute path?
Or maybe the usage Play.classloader.getResourceAsStream is wrong?
In the Play Framework the "conf" directory is on the classpath, so you can put your file there and open it with getResourceAsStream.
For example if you create a file "conf/foo.txt" you can open it using
Play.classloader.getResourceAsStream("foo.txt");