api - Java get metadata of public file on Google Drive -

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hello i've downloaded , installed latest version of drive rest api java , want metadata of public file google drive fileid - have following code:

private static final string application_name = "test"; private static final string file_id = "thefileid";   public static void main(string[] args) {      httptransport httptransport = new nethttptransport();     jacksonfactory jsonfactory = new jacksonfactory();      drive service = new drive.builder(httptransport, jsonfactory, null).setapplicationname(application_name).build();      printfile(service, file_id); }   private static void printfile(drive service, string fileid) {    try {       file file = service.files().get(fileid).execute();       system.out.println("title: " + file.gettitle());   } catch (ioexception e) {       system.out.println("an error occured: " + e);   } }

but error message: "daily limit unauthenticated use exceeded. continued use requires signup."

i've tried on https://developers.google.com/drive/v2/reference/files/get worked out fine.

do have authenticate api key when file public , how if so.

thanks time.

yes, need authenticate api key. see documentation here: https://developers.google.com/drive/web/about-auth


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