AWS equivalent of system.out.println()?

Question

I am working on a Java Web Application and I'm deploying it to AWS Elastic Beanstalk.

Can I write system.out.println() (or similar) and view it when the application is deployed? If so, where is the log?

I would like this for debugging purposes, etc.

Thanks.

Answer 1

To answer your system.out.println() question, yes you can use this and it will show up in the logs.

Whilst setting up the Elastic Beanstalk application, you were asked for a KEY. This is the key you can use to ssh into your the instance where you can find the logs in /var/log. Look for a file called web-1.inf or catalina.out. (don't quote me on this)

Another location where you can check the logs is when you select your Elastic Beanstalk application in the Elastic Beanstalk Dashboard, and on the left-hand side select LOGS. Here you can select whether you want the FULL logs which is a zipped version of all the logs on the instance OR you can select the get the last 100 lines of output coming from your application.