can't run any file on dos....please help me!!

[tg]

I've got a basic and serious problem.
I can't have any file, even a simple file like 'Hello World', run on dos.
I've set the proper path of jdk directory, and it compiles my file without
any error, making a 'class' file. However, everytime I try to run it, it
shows a messege :

Exception in thread "main" java.lang.NoClassDefFoundError: (file name)

When I run the same file with KAWA, a popular editor, it works with no error.

Now, I need your help to solve this problem. I'll be waiting for your answer...

[Ako]

Check the bin directory to see if you have java.exe and check your path again
these are the only causes for your problem.

Good luck

Ako




"tg" <oyfly75@hotmail.com> wrote:
>
>I've got a basic and serious problem.
>I can't have any file, even a simple file like 'Hello World', run on dos.
>I've set the proper path of jdk directory, and it compiles my file without
>any error, making a 'class' file. However, everytime I try to run it, it
>shows a messege :
>
>Exception in thread "main" java.lang.NoClassDefFoundError: (file name)
>
>When I run the same file with KAWA, a popular editor, it works with no error.
>
>Now, I need your help to solve this problem. I'll be waiting for your answer...
>

[Paul Clapham]

You've edited the error message so that it's hard to tell what the problem
is. However, to run a class you type this: "java theClass" and not this:
"java theClass.class". That's one common error made by beginners.

PC2

"tg" <oyfly75@hotmail.com> wrote in message news:3b034ac5$1@news.devx.com...
>
> I've got a basic and serious problem.
> I can't have any file, even a simple file like 'Hello World', run on dos.
> I've set the proper path of jdk directory, and it compiles my file without
> any error, making a 'class' file. However, everytime I try to run it, it
> shows a messege :
>
> Exception in thread "main" java.lang.NoClassDefFoundError: (file name)
>
> When I run the same file with KAWA, a popular editor, it works with no
error.
>
> Now, I need your help to solve this problem. I'll be waiting for your
answer...
>

[ammon]

"tg" <oyfly75@hotmail.com> wrote:
>
>I've got a basic and serious problem.
>I can't have any file, even a simple file like 'Hello World', run on dos.
>I've set the proper path of jdk directory, and it compiles my file without
>any error, making a 'class' file. However, everytime I try to run it, it
>shows a messege :
>
>Exception in thread "main" java.lang.NoClassDefFoundError: (file name)
>
>When I run the same file with KAWA, a popular editor, it works with no error.
>
>Now, I need your help to solve this problem. I'll be waiting for your answer...
>
Do you have set your classpath?

[Rich]

"tg" <oyfly75@hotmail.com> wrote:
>
>I've got a basic and serious problem.
>I can't have any file, even a simple file like 'Hello World', run on dos.
>I've set the proper path of jdk directory, and it compiles my file without
>any error, making a 'class' file. However, everytime I try to run it, it
>shows a messege :
>
>Exception in thread "main" java.lang.NoClassDefFoundError: (file name)
>
>When I run the same file with KAWA, a popular editor, it works with no error.
>
>Now, I need your help to solve this problem. I'll be waiting for your answer...
>


You said you have set the Path environment variable to point to the correct
directory. Have you set the classpath environment variable? If you haven't
set it to "." (without quotes). This means the JVM will run your programs
from the directory where they are stored. So once the variable is set you
should be able to go to the directory where your program is stored and type
"java HelloWorld" and hopefully it will work.

Let me know how you get on.

Rich

[Andrew Greiner]

"Rich" <richard.bowen@power.alstom.com> wrote:
>
>"tg" <oyfly75@hotmail.com> wrote:
>>
>>I've got a basic and serious problem.
>>I can't have any file, even a simple file like 'Hello World', run on dos.
>>I've set the proper path of jdk directory, and it compiles my file without
>>any error, making a 'class' file. However, everytime I try to run it, it
>>shows a messege :
>>
>>Exception in thread "main" java.lang.NoClassDefFoundError: (file name)
>>
>>When I run the same file with KAWA, a popular editor, it works with no
error.
>>
>>Now, I need your help to solve this problem. I'll be waiting for your answer...
>>
>java -cp "." HelloWorld
Basically it says java -classpath "." <-- current directory then Application
Name.
>
>You said you have set the Path environment variable to point to the correct
>directory. Have you set the classpath environment variable? If you haven't
>set it to "." (without quotes). This means the JVM will run your programs
>from the directory where they are stored. So once the variable is set you
>should be able to go to the directory where your program is stored and type
>"java HelloWorld" and hopefully it will work.
>
>Let me know how you get on.
>
>Rich