Quick Start Deploy a Java App on Heroku | Manage and sale a java app on Heroku | Trailhead Salesforce
Manage and Scale a Java App on Heroku
View Your Heroku App Logs
Heroku treats logs as streams of time-ordered events aggregated from the output of both your app and the Heroku components that run it. The result is a single channel for all logging events. You can view the logging output from the app you created in the previous unit by running the command Heroku logs --tail.
Leave this command running, and visit your application in the browser again by running heroku open in another terminal session (or simply refresh the web page if you still have it open). You see a log message generated each time you visit the page.
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