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richcash

Tue Sep 05, 2006 3:37 pm


Help me compile simple program

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Well, I installed JDK 5.0 on my computer (and it took up a lot of space!) and then tried to test it out by writing this code :
/**
 * The HelloWorldApp class implements an application that
 * simply prints "Hello World!" to standard output.
 */
class HelloWorldApp {
    public static void main(String[] args) {
        System.out.println("Hello World!"); // Display the string.
    }
}
code from official java tutorials website
Then I went to command and was in the appropriate directory (because I saw the .txt file that I saved this code in) and I typed in javac filename.txt. It didn't recognize it and said javac was neither an internal or external command, etc. 
My teacher said I have to download the JAR and the Application at drjava.org website, but can someone tell me if that's the problem and if I really need those before I go and download even more!


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richcash

Tue Sep 05, 2006 4:29 pm



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No edit or delete button! Sorry for the double post
I made a typo, just in case you get confused. I obviously type in javac filename.java (instead of .txt like I typed above) and it didn't recognize javac as a command as I said above.


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Andy

Tue Sep 05, 2006 5:20 pm



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you need to setup your [url=http://java.sun.com/j2se/1.3/install-windows.html]environment variables 


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richcash

Tue Sep 05, 2006 7:32 pm



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Thanks Andy, it works now, that was exactly the problem (I didn't read that page the first time I saw it!).