How to create an executable jar file?

[Jonatan10]

Ok so I've made a game on Java and I want to create a jar file to run it so I can just have it on my flash drive and use it on any computer that has java installed.
However I'm having trouble with it. I've googled it and found instruction around that say to type something like this "jar -cf myfile.jar *.class" but where do I type that and is there an easier way to go about creating an executable jar file?

[KevinWorkman]

You type that into the command prompt. Google is your friend.

[Jonatan10]

I did google it. However I didn't understand what to type it into it and I was wondering (hoping) there was an easier solution to it.

[Jonatan10]

Whenever I try to use that command on the command prompt in the directory of my program I get the following error.
" 'jar' is not recognized as an internal or external command, operable program or batch file"

[mine0926]

It is either you set the path in environment variable or locate the bin folder or the javac.exe

[Tolls]

How did you compile your code?
Because if you're getting that error on your command line then I can't see how javac could have worked.

[Jonatan10]

I just used jar -cf tictactoe.jar * in the command prompt in the directory of all my class files
then I got the error

[KevinWorkman]

I just used jar -cf tictactoe.jar * in the command prompt in the directory of all my class files
then I got the error

The question is: how do you compile your .java files into .class files in the first place?

Because it doesn't make a ton of sense for you to be able to compile but not create a jar- if your system knows where javac is, it should know where jar is (they're in the same place).