In Java, how do I create a MANIFEST.MF with Main-Class: in it?

[countrydj]

I have a .jar file which I have unzipped into it’s own directory.
The directory now contains a number of .class files.
I have converted the files into .java files.
I have found the file that a need to edit and edited it.
I have now converted it back to a .class file.
I now convert it to the original .jar file with the command: jar cf Creator.jar *
This creates a file called Creator.jar
When I try to run the file I get an error message:
Failed to load Main-Class manifest attribute.

The manifest.mf is:
Manifest-Version: 1.0
Created-By: 1.6.0_01 (Sun Microsystems Inc.)

And it should read:
Manifest-Version: 1.0
Created-By: 1.6.0_01 (Sun Microsystems Inc.)
Main-Class: Creator

Can anybody tell me how to create the .jar file to include Main-Class: Creator.

Thanks

John C

 

[stefanwagner]

Paste or type the characters into an editor, "save as" - done that.

jar -cfm Creator.jar MANIFEST.MF *
# or
jar -cmf MANIFEST.MF Creator.jar *

to create a jar with manifest.

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http://home.arcor.de/hirnstrom/bewerbung

 

[countrydj]

Hi stefanwagner..
Thanks for taking the trouble to reply to my post.
However, creating .jar file with the command:-
jar cf Creator.jar * does create a manifest automatically:-
Manifest-Version: 1.0
Created-By: 1.6.0_01 (Sun Microsystems Inc.)

However, the manifest needs to read:-
Manifest-Version: 1.0
Created-By: 1.6.0_01 (Sun Microsystems Inc.)
Main-Class: Creator
so that when the program is run, it knows to start with Creator.class
This is what I don't know how to do.
Can you help??

By the way, when I use the command jar cfm Creator.jar * I get an error message:
java.io.FileNotFoundException: Creator (Access is Denied)
at java.io.FileInputStream.open etc....

Does this mean anything ???

Many thanks...

John C

 

[countrydj]

Hi stefanwagner..
I've solved the problem now.

I changed this: jar -cmf MANIFEST.MF Creator.jar *
to
jar -cmf manifest.txt Creator.jar *

and everything worked.

Many thanks for your help.

John C