import java.io.FileNotFoundException; import java.io.IOException; import java.net.URL; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.StandardCopyOption; class get_jreleaser { public static void main(String... args) throws Exception { if (args.length != 1) { System.err.println("Usage: java get_jreleaser.java VERSION"); System.exit(1); } // TODO: handle version = 'latest' var version = args[0]; var url = "https://github.com/jreleaser/jreleaser/releases/download/" + version + "/jreleaser-tool-provider-" + version + ".jar"; var file = Path.of("jreleaser-cli.jar"); try (var stream = new URL(url).openStream()) { System.out.printf("✅ Located JReleaser %s%n", version); System.out.printf("⬇️ Downloading %s%n", url); var size = Files.copy(stream, file, StandardCopyOption.REPLACE_EXISTING); System.out.printf("%s << copied %d bytes%n", file, size); System.out.printf("✅ JReleaser installed successfully%n"); } catch(FileNotFoundException e) { System.out.printf("❌ JReleaser %s not found%n", version); System.exit(1); } catch(IOException e) { System.out.printf("☠️ JReleaser %s could not be downloaded/copied%n", version); e.printStackTrace(); System.exit(1); } } }