How to run Java in a Docker container - Ubuntu Environment

I showcase how we can set up a docker file that can build a docker image that can run a docker container that runs a simple "Hello World!" java program. I think docker is a very interesting concept and hope more people will use it in the future.

Commands:
Build a docker image:
docker build -t [tag] [dockerfile position]

Create and run Docker container
docker run [docker image]

How to get into a docker container
docker run -it [docker image] /bin/bash

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[whale]

Thank you so much, this really helped me as I kept getting errors about not finding the class and every resource I found just told me to use an image with the java already part of it which doesn't help me learn.

[sahilkachhap]

Hey, what if I have two folders. Say one file contains inputs against which I need to run my java program and other file is obviously our java file. So, how could we run such a java program inside docker container and show the output on the terminal.