OAuth2 Google Api java/eclipse -

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im new java pelase bare me.. im looking @ example: https://developers.google.com/admin-sdk/directory/v1/quickstart/quickstart-java

but don't want use url copy/paste version auth iv'e read should use serviceaccount.

i downloaded p12 key , placed in source folder. , im rebuilding google example code found on stackoverflow

so here's how far get:

public class directorycommandline {      httptransport httptransport = new nethttptransport();   jacksonfactory jsonfactory = new jacksonfactory();      // build service account credential.     googlecredential credential = new googlecredential.builder().settransport(httptransport)         .setjsonfactory(jsonfactory)         .setserviceaccountid("......82p@developer.gserviceaccount.com")         .setserviceaccountscopes(directoryscopes.all())        .setserviceaccountprivatekeyfromp12file(new java.io.file("eclipsejava-d6675et3ab71.p12"))         .build();       // create new authorized api client     directory service = new directory.builder(httptransport, jsonfactory, credential)         .setapplicationname("directorycommandline")         .build();      list<user> allusers = new arraylist<user>();     directory.users.list request = service.users().list().setcustomer("my_customer");      // users     {       try {         users currentpage = request.execute();         allusers.addall(currentpage.getusers());         request.setpagetoken(currentpage.getnextpagetoken());       } catch (ioexception e) {         system.out.println("an error occurred: " + e);         request.setpagetoken(null);       }     } while (request.getpagetoken() != null &&              request.getpagetoken().length() > 0 );      // print users     (user currentuser : allusers) {       system.out.println(currentuser.getprimaryemail());     }   } }

if run error:

error: main method not found in class directorycommandline, please define main method as:    public static void main(string[] args)

i guess need add 

public static void main(string[] args) throws ioexception {

infront/before:

  httptransport httptransport = new nethttptransport();   jacksonfactory jsonfactory = new jacksonfactory();

but gets mess: enter image description here

this has nothing google apis java class structure. considering beginner in java should start more simple exercises.

oracle , internet provide lot of documentation java. can start looking @ these links example : https://docs.oracle.com/javase/tutorial/getstarted/application/ https://docs.oracle.com/javase/tutorial/java/javaoo/classes.html


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