I am trying to create a Java script to retrieve all of the logs from a particular workspace for a given date range and running into an issue where when trying to retrieve the additional pages, it seems that I get stuck in an infinite loop. Can someone help guide me in what I am doing wrong? FYI, I am using the “ibm-watson-7.2.0-jar-with-dependencies.jar” library

Here is the code that I have trying to get this working for the logs on 2019-08-08 (Aug 8, 2019)

Any and all help would be appreciated.

    import com.ibm.watson.assistant.v1.Assistant;
     import com.ibm.cloud.sdk.core.service.security.IamOptions;
     import com.ibm.watson.assistant.v1.model.ListLogsOptions;
     import com.ibm.watson.assistant.v1.model.LogCollection;
     import org.json.JSONArray;
     import org.json.JSONException;
     import org.json.JSONObject;
      
 public class Main {
     private static String apikey="<apikey>"; 
     private static String version="2019-02-28";
     private static String url="https://gateway.watsonplatform.net/assistant/api";
     private static String workspaceId = "<workspaceid>";
     private static int pagelimit=500;
     private static LogCollection response;
     private static String next_url,next_cursor;
     private static String filter = "(response_timestamp>2019-08-07,response_timestamp<2019-08-09)";
 
     public static void main(String[] args) {
         // Connecting
         IamOptions iamOptions = new IamOptions.Builder().apiKey(apikey).build();
         Assistant service = new Assistant(version, iamOptions);
         service.setEndPoint(url);
         
         // Get first log set
         ListLogsOptions options = new ListLogsOptions.Builder(workspaceId)
                 .pageLimit(pagelimit)
                 .filter(filter)
                 .build();
         response = service.listLogs(options).execute().getResult();
 
         next_url=get_nexturl(response);
         next_cursor=get_nextcursor(response);
         
         // while next_cursor has a value, keep looping
         while (next_cursor!="") {
             options = new ListLogsOptions.Builder(workspaceId).
                     cursor(next_cursor).
                     pageLimit(pagelimit).
                     filter(filter).
                     build();
             response = service.listLogs(options).execute().getResult();
             next_url=get_nexturl(response);
             next_cursor=get_nextcursor(response);
         } //end while
     } //end main
 
     private static String get_nexturl(LogCollection r) {
         String p, nu;
         // Get Pagination and next_url
         p=return_key(r.toString(),"pagination");
         nu=return_key(p,"next_url");
         return nu;
     } // end get_nexturl
     
     private static String get_nextcursor(LogCollection r) {
         String p, nc;
         // Get Pagination and next_cursor
         p=return_key(r.toString(),"pagination");
         nc=return_key(p,"next_cursor");
         return nc;
     } // end get_nextcursor
     
     // returns the value of a JSON key, with JSON being passed as a string surrounded by "{ }"
     private static String return_key(String r, String key) {
         String p;
         try {
             // Get the pagination
             JSONObject jo = new JSONObject(r);
             p=jo.get(key).toString();
             return p;
         } catch (JSONException e) {
             return "";
         }
     } // end return_key
 } // end class