Google AnalyticsService throwing java.lang.reflect.UndeclaredThrowableException

Question

In my code this line

   DataFeed dataFeed = analyticsService.getFeed(query.getUrl(),DataFeed.class);

throwing java.lang.reflect.UndeclaredThrowableException,

I tried with both this query URLs

1. DataQuery query = new DataQuery(new URL("https://www.google.com/analytics/feeds/data"));
2. DataQuery query = new DataQuery(new URL("https://www.googleapis.com/analytics/v2.4/data")); 

sometimes for some id's it is giving result but most of the time it is throwing the exception any suggestion please, it is killing my time

These are my query parameters

 query.setStartDate(startDate);
 query.setEndDate(endDate);
 query.setIds(tableID);
 query.setDimensions("ga:pagePath");
 query.setMetrics("ga:pageviews");
 query.setSort("-ga:pageviews");    

Answer 1

I found the answer by myself by including one more query parameter

 query.setStringCustomParameter("key","my-key");