If the Java agent's troubleshooting procedures (like No data appears and other docs in that category) haven't resolved your problem, use the log files to troubleshoot the issue. If you need further assistance, contact support.newrelic.com.
Include with support request
Do log files appear for your Java agent?
Include the URL of the page where you're not seeing the data that you expect. If your application data has not appeared at all, then send the URL of the app's APM Summary page.