Making jar file in folder other than the working directory

Question

Hello!
I am trying to make jar files by using a program. I execute jar commands at runtime. The problem is that when a command is given like this
jar cvmf C:\HTTPS\Manifest.txt C:\HTTPS\khalid.jar C:\HTTPS\client.cer
C:\HTTPS\Client.jar C:\HTTPS\client.keys C:\HTTPS\HelloRunnableWorld.class C:\HT
TPS\HelloRunnableWorld.java C:\HTTPS\keytool interaction commands.txt C:\HTTPS\M
akeJarRunnable.class C:\HTTPS\MakeJarRunnable.java C:\HTTPS\MakeJarRunnable.zip
C:\HTTPS\Manifest.txt C:\HTTPS\myjar.jar C:\HTTPS\myjar_r.jar C:\HTTPS\Problem s
cenario.txt C:\HTTPS\Run.bat C:\HTTPS\scompressed.jar C:\HTTPS\Security.jar C:\H
TTPS\Server.jar C:\HTTPS\server.keys C:\HTTPS\serverexport.cer C:\HTTPS\Starter.
class C:\HTTPS\Starter.java C:\HTTPS\Umer Farooq - What I did.ppt C:\HTTPS\Umer.jar
The jar file is created but it has 0 bytes in it. No data is written into it, despite all the files being there.
Thank You

Answer 1

That is not the way to create jar files. Here is how you do it.
Under say c:\ create directory "utils".
Copy all of the *.java" files which will be part of this jar file "utils.jar". After moving files into c:\utils , make sure every single file has the first line of code as "package utils;" (without the quotes though)
Type in "javac *.java" to compile all of the files at once.
cd over to the parent directory and then type in
jar cvf utils.jar c:\utils\*.class
This will create utils.jar file under c:\