How can I create a .jar file?

Question

In the tutorial I found out that jar files can be created in the following way:

jar cf jar-file input-file(s)

However, it was not clear wha

Answer 1

However, it was not clear what are the input-file(s). Is that .java files or .class files? From the examples on the same page I can assume that should be .class files.

Yes, you need to include the class files.

I have a lot files like that: GameWindow$2$10class, GameWindow$2$7.class and so on. Should I include all of them into the command line for the creation of the .jar file?

Yes, these are from inner classes; you need them as well.

To run my application I use java Game. So, my be I need to use only Game.class file when I create a .jar file?

No, class Game will use other classes, which in turn use others. You need them all.

Will .jar file of my application be able to run on the computer which does not contain the .jar file of used library?

No.

That said, creating a JAR manually is a good learning experience, but not something you'd really do in practice.

You should probably look into automating you JAR building. Check out e.g. Ant: http://ant.apache.org/