Failed to load Main-Class manifest attribute from jar file

[RabiDas Sharma]

Hi everyone
I'm really embarrassed to ask the following small problem but really its frustrating.

I'm trying to convert a Hello world program to jar file.

my test.java contains:

public class test
{
public static void main(String[] args)
{
System.out.println("hello");
}
}

manifest file contains:


Manifest-Version: 1.0
Main-Class: test


command used for making jar:::::
jar cmf test.mf test.jar test.class test.java

output of command jar tf test.jar:::::::

META-INF/
META-INF/MANIFEST-MF
test.class
test.java

If i give java -jar test.jar then i'm getting:
Failed to load Main-Class manifest attribute from test.jar


this is crazy. please help me

thanks in advance

[Stuart A. Burkett]

Do you have a blank line at the end of the manifest file ?
The end-of-file marker must not be on the same line as the Main-Class attribute.

[Jesper de Jong]

And why are you putting the source file test.java inside the jar file?

[RabiDas Sharma]

Hi jesper

I have deleted the older jar file and then recreated another jar file without including .java(source file)
still then i'm getting the same error.
please tell me what could be my mistake......


thanks in advance

[RabiDas Sharma]

thanks stuart after i gave new line in the manifest file, its working fine.

could you please tell me why it is mandatory for manifest file to end with new line??

Warning: The text file must end with a new line or carriage return. The last line will not be parsed properly if it does not end with a new line or carriage return.

could you please elaborate the above line and justify it??

thanks a lot everyone for helping me

[Jesper de Jong]

There is no special reason why it works that way - that's just how it works.