小编Siv*_*a R的帖子

int x = 10; int y = (x.hashcode() & 0xfffffff);

以上代码如何总是y 积极的？谢谢!

@GET
@Path("/{id}/content")
@Produces({ "application/octet-stream" })
public Response getDocumentContentById(@PathParam("id") String docId) {

    InputStream is = getDocumentStream(); // some method which gives stream
    ResponseBuilder responseBuilder = Response.ok(is);
    responseBuilder.header("Content-Disposition", "attachment; filename=" + fileName);
    return responseBuilder.build();

}

这里我如何关闭 InputStream 是？如果某物（jax.rs）自动关闭。请给我一些信息。谢谢你。