javac command doesnt work

[virus0010010]

listen, I am kinda stuck and confused so, why dont you send me a simple "hello world" java file and class file and let me see if it works with me. my e-mail is: virus0010010@hotmail.com
thank you

[redhead]

Thats actualy a very simple one:

class HelloWorld {
    public static void main(String[] args) {
        System.out.println("Hello World!");
    }
}

And you'll compile it with

> javac filename.java

Which produces the filename.class file, then you can run it with the

> java filename

If this produces errors like

Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorld

Try executing it with the CLASSPATH argument ie

> java -cp . filename

If that produces errors, please show them as they appear.

[virus0010010]

ok. It worked. But it didn't give me that command in the book. What does it mean (java -cp . filename)?
I know what (java filename) means but not what you told me????

[redhead]

The -cp tells it to override the CLASSPATH variabel, and use whatever you've provided instead, in this case . or current dir.

[Belisarius]

As you can guess, the problem is with your CLASSPATH environmental variable. What's it's current value?

[virus0010010]

its "." like you told me to do so.
Even though the -cp command works, i still want to run my program in a normal way.

[Belisarius]

Here's what I want you to do, I want you to give it another shot and then copy and paste everything here.

Also, I want you to run the following command:

echo %CLASSPATH%

Copy and paste the results from that too.

I still think somehow your classpath variable is getting misconfigured. I don't know how, but we should be able to figure out.

[virus0010010]

you cant copy any thing from the command prompt. but when i added the echo %CLASSPATH% command, it gave me "." the same thing that i added.
And I gave it another shot but nothing happend. I still got: exeption in thread "main" java.lane.noclassdeffounderror.

[Belisarius]

You can right-click on the command prompt, and then choose "Mark". You can then highlight the text in the window. Then, after you've highlighted everything, press Enter. You've now copied everything visible in the window.

And just to make sure (because I've seen it happen before with other people), you didn't include the quotes when you set the CLASSPATH variable, it's just the period, right?

[virus0010010]

C:\Documents and Settings\w>cd \myjava

C:\myjava>echo %CLASSPATH%
"."

C:\myjava>java Saluton
Exception in thread "main" java.lang.NoClassDefFoundError: Saluton

C:\myjava>



this is all that I get. And what do you meen by quotes? I had addded just what you told me to which is "."

[redhead]

remove the quotes surrounding the . right now the CLASSPATH is pointing to a folder named "." instead of the current folder which dosn't contain any quotes.

[virus0010010]

OW MY GOD!! It finally worked.
thank you'll for all your help. I hope I can come back to you for any more trouble I get along the way.