How to compile from a folder different than bin

If you are asking how to run javac.exe from anywhere in a prompt (e.g. C:\java.exe MyApp), You will need

to modify the Path variable in your Environment variables (for Windows). If you are running XP,

1) go to control panel

2) click the System icon

3) openthe Advanced tab

4) click the Environment Variables button

5) under System variables, highlight the Path variable

6) click Edit

7) type in the full path to the directory containing bin in your JDK

8) OK everything and then reboot your system. You should be good to go.

afarmand at 2007-7-6 0:06:54 >

> Variable Name :

> javac bin

> Variable Value:

> F:\j2sdk1.4.1\bin

I think you may have misunderstood. When you get to step 6, you should get a small window titled

Edit System Variable correct? The first textfield should have Path written in it. The textfield

under the path textfield should have a bunch of paths to various directories something like so (yours will

differ a bit but don't worry about it):

%SystemRoot%\system32;%SystemRoot%\System32\Wbem notice each dir is separated by a ';'

Now, all you have to do is type the complete path to your bin directory at the end of the textfield. For example

if I were to add my bin directory, the above bold line would look like this:

%SystemRoot%\system32;%SystemRoot%\System32\Wbem;C:\Program Files\jdk1.5.0\bin

I hope that helps, PLEASE PLEASE DO NOT delete the lower textfield and save. It's meant for users to

append directories to the end of the field. If you delete info from the lower textfield, you may experience

some major OS problems. The PATH variable is used as a convenience of being able to type a command

from anywhere in the prompt. Any executable can be run from anywhere in a prompt provided that the

executable's directory is appended to the end of the Path variable. That's why you can run commands from

the prompt such as cd, exit, paint, ver, etc

afarmand at 2007-7-6 0:06:54 >

*JDs First Program says "Hello Folks"*/

public class Hello {

public static void main (String [ ]args){

System.out.println("Hello Folks");

}

}

I am running my first simple program. It compiles on my Dell laptop and generates a .class file but doesn't execute. I get the error message below. I have already done all the system changes that were specified in the System Path area. This same code runs on my colleagues desk top with the same software.

I realize there is a path error but don't know where else to look. Any conflicts?

THIS IS A COPY OF THE COMMAND PROMPT SESSION..........

C:\Java>javac Hello.java

C:\Java>java Hello

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

C:\Java>dir

Volume in drive C has no label.

Volume Serial Number is B47D-035A

Directory of C:\Java

09/02/2004 09:28 PM<DIR> .

09/02/2004 09:28 PM<DIR> ..

09/02/2004 09:55 PM415 Hello.class

09/02/2004 08:12 PM152 Hello.java

2 File(s)567 bytes

2 Dir(s) 18,406,572,032 bytes free

THIS IS THE PATH ENTRY FOR SEARCH RULES.........

%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\Program Files\ATI Technologies\ATI Control Panel;C:\Program Files\Common Files\Adaptec Shared\System;C:\j2sdk1.4.2_05\bin

jake225 at 2007-7-6 0:06:54 >