Click Create Application.
Input Application name as you like.
Input Platform, Platform branch and Platform version according to your application.
Select Upload your code.
Then, select how to upload your code to Elastic Beanstalk.
In my case, I selected Local file and uploaded my jar file.
Then, click Create Application.
Environment creation will be started.
After completion, below screen will be displayed.
Please check if Health check status is OK.
If healthcheck status is NG, you can check the log by downloading Logs section as belos.