// the beginning of the week (Sunday) to the end of the week (Saturday), or
// the first of the month to the end of the month.
reportQuery.setDateRangeType(DateRangeType.REACH_LIFETIME);
// Create report job.
ReportJob reportJob = new ReportJob();
reportJob.setReportQuery(reportQuery);
// Run report job.
reportJob = reportService.runReportJob(reportJob);
// Create report downloader.
ReportDownloader reportDownloader = new ReportDownloader(reportService, reportJob.getId());
// Wait for the report to be ready.
reportDownloader.waitForReportReady();
// Change to your file location.