Compiles fine but error when try to run

[tariqm]

Hi All,
Does someone have any idea why the following code works in Eclipse with no problems but on
command line()does not run.

public class Hello{
	public static void main(String args[]){

	System.out.println("Hi");
}	

}

it compiles fine and creates a class files as well, but gives the error:
could not find or load main class Hello

when i try to run this with:
java Hello

Thank You in advance!

Tariq

[Tolls]

Where are you running this from?
That is, what directoy, and does that directory contain the Hello.class file?
Do you have a CLASSPATH environment variable set, if so then either remove it or use '-cp.' in your java command.

[Norm]

when you open the command prompt window enter: dir
to show the folders contents before entering the java command.
To copy the contents of the command prompt window:
Click on Icon in upper left corner
Select Edit
Select 'Select All' - The selection will show
Click in upper left again
Select Edit and click 'Copy'

Paste here.

[tariqm]

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\Tariq>cd Desktop

C:\Users\Tariq\Desktop>dir
Volume in drive C has no label.
Volume Serial Number is 9EAA-975F

Directory of C:\Users\Tariq\Desktop

14/05/2012 23:44 <DIR> .
14/05/2012 23:44 <DIR> ..
30/04/2012 23:42 1,126 Aptana Studio 3.lnk
12/02/2012 18:21 870 Downloads - Shortcut.lnk
19/04/2012 22:58 1,227 eclipse - Shortcut (2).lnk
25/02/2012 13:02 949 eclipse - Shortcut.lnk
12/05/2012 09:09 42 first.js
30/04/2012 23:16 2,397 Google Chrome.lnk
15/05/2012 16:50 406 Hello.class
14/05/2012 23:44 100 Hello.java
11/03/2012 19:26 1,282 Launch WhiteSmoke - Shortcut.lnk
10/03/2012 11:05 2,394 MySQL 5.5 Command Line Client.lnk
13/05/2012 13:39 <DIR> nodeWork
21/04/2012 12:41 732 Photos Family - Shortcut.lnk
12/05/2012 03:58 <DIR> Removed From Desktop Just after Second Semes
ter
14/05/2012 23:22 518 Test1.class
14/05/2012 23:22 275 Test1.java
12/05/2012 10:10 <DIR> wep tec week 12
17/11/2011 19:47 696 Workspace - Shortcut.lnk
14 File(s) 13,014 bytes
5 Dir(s) 73,063,886,848 bytes free

C:\Users\Tariq\Desktop>

[Norm]

Where did you enter the java command and get the error message?

[tariqm]

Oh sorry here it is now at the very end:

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\Tariq>cd Desktop

C:\Users\Tariq\Desktop>dir
Volume in drive C has no label.
Volume Serial Number is 9EAA-975F

Directory of C:\Users\Tariq\Desktop

14/05/2012 23:44 <DIR> .
14/05/2012 23:44 <DIR> ..
30/04/2012 23:42 1,126 Aptana Studio 3.lnk
12/02/2012 18:21 870 Downloads - Shortcut.lnk
19/04/2012 22:58 1,227 eclipse - Shortcut (2).lnk
25/02/2012 13:02 949 eclipse - Shortcut.lnk
12/05/2012 09:09 42 first.js
30/04/2012 23:16 2,397 Google Chrome.lnk
15/05/2012 16:50 406 Hello.class
14/05/2012 23:44 100 Hello.java
11/03/2012 19:26 1,282 Launch WhiteSmoke - Shortcut.lnk
10/03/2012 11:05 2,394 MySQL 5.5 Command Line Client.lnk
13/05/2012 13:39 <DIR> nodeWork
21/04/2012 12:41 732 Photos Family - Shortcut.lnk
12/05/2012 03:58 <DIR> Removed From Desktop Just after Second Semes
ter
14/05/2012 23:22 518 Test1.class
14/05/2012 23:22 275 Test1.java
12/05/2012 10:10 <DIR> wep tec week 12
17/11/2011 19:47 696 Workspace - Shortcut.lnk
14 File(s) 13,014 bytes
5 Dir(s) 73,063,886,848 bytes free

C:\Users\Tariq\Desktop>java Hello
Error: Could not find or load main class Hello

C:\Users\Tariq\Desktop>javac Hello.java

C:\Users\Tariq\Desktop>java Hello
Error: Could not find or load main class Hello

C:\Users\Tariq\Desktop>

[Norm]

Looks like the java command should find the class file or give a different error message. I can not get the error message you get. Here's what I get:


D:\JavaDevelopment\Testing\ForumQuestions7>dir Hello*
Volume in drive D is Work
Volume Serial Number is 7CE8-AEC3

Directory of D:\JavaDevelopment\Testing\ForumQuestions7

05/15/2012 04:15 PM 406 Hello.class
05/15/2012 04:15 PM 114 Hello.java
2 File(s) 520 bytes
0 Dir(s) 56,083,308,544 bytes free

D:\JavaDevelopment\Testing\ForumQuestions7>java Hello
Hi

D:\JavaDevelopment\Testing\ForumQuestions7>

[DarrylBurke]

What's the output from java -version?

db

[Tolls]

*sigh*
Is my post invisible?

You have CLASSPATH set in your environment variables.
That is the list of places 'java' will look for the Hello class if you do not provide a '-cp .' to the java command.
Either remove the CLASSPATH variable or use the -cp switch.