writing the uploaded files to disk received using jax rs

Question

Am trying to upload a multipart files using jquery form data and trying to receive the file using jax-rs and need to write the files to disk and am able to recieve the file but how to write to disk?

@POST
@Consumes("multipart/form-data")
public Response postFormData(@FormParam("thefile") File theFile) {

// how to write the file to disk..

}