How can I make .jar files for applications?

My jar program creates jar files but won't open the program when I double click them. I use the command:
jar cvf *.jar filenames
The jar file is created but won't execute. Can anyone tell me what i am doing wrong?
Thanks
Jiby

Hello !
Well, I had the same problem a week or two ago !
First, in your *.java, don't use any package...I mean, don't do a package of your program (I guess there is a way to make it work with, but it would need a little bit more work...).
Then, with the jar tools, use the command
-jar cf jar_that_you_want_to_create.jar class-that_you_include_in_your_jar.class
With that, a jar will be created, and when you will try to "run" it, it will say that it can not find the main class...
You need a Manifest !
Create a text file MyManifest.text, and write that in your text file :
Main-Class: classname
follow the same as i wrote above. leave a blank after colon and a blank line after the first line like above.
then, well, use tha jar tool again:
-jar umf MyManifest.txt jar-file-you-created.jar
To "run" it, double click on it, or use the java tool:
java -jar jar_you_created.jar
Thanks to Phani, who helped me with that !!
Splitsch

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How can I make .jar files for applications?

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