Does anyone run Java on Atom and use it? I would like to ask for your help with setting the environment variable.

Hello, how are you? I'm a person who just started studying Java.

I usually use Eclipse to practice and study, but I use Atom because I want to separate the files given as examples from the books.

Before that, I didn't care about running or compiling mainly using HTML files, but when I tried to run Java, I had to set up a lot of things and I didn't know what to do, so I wanted to ask for advice.

Once I run the Java file, the following error occurs, so I think I need to set the environment variable, is there anyone who can help me with this? Results of running script run (ctrl+shift+B).

If you have any other tools other than Eclipse, please advise. I've seen a lot of posts saying that the tool called Intelligence is good, but it's a paid tool and it's only for beginners to use for learning, so I'm looking for something that's easy to use for free.