To reproduce, create a dummy file called a.txt in your current directory
from where you will invoke the jar command. you also need the manifest.txt
file in the same directory (manifest.txt test case below):

<path to jdk 1.1.8>/bin/jar cvmf manifest.txt test_1.1.8.jar a.txt

<path to jdk 1.2.2>/bin/jar cvmf manifest.txt test_1.2.2.jar a.txt

now you have two jar files, test_1.1.8.jar and test_1.2.2.jar.

Next, extract the contents of these two jar files in different directories,
so you will get the generated manifest files:

1. mkdir 1.1.8
2. copy test_1.1.8.jar to this directory.
3. cd 1.1.8
4. jar xvf test_1.1.8.jar
5. vi META-INF/MANIFEST.MF

you will find that manifest file looks like the manifest.1.1.
Do similar steps for JDK 1.2.2 using test_1.2.2.jar file.

Note the difference in generated MANIFEST.MF file below.

% cat META-INF/MANIFEST.MF
Manifest-Version: 1.0

Name: a.txt
PropertyOfA: TRUE
Digest-Algorithms: SHA MD5
SHA-Digest: wmfnlhOIaPWrba75W/V2+oZPgEE=
MD5-Digest: 7RHv6kbIoQ/bspA7VR2c1Q==


% cat META-INF/MANIFEST.MF
Manifest-Version: 1.0
Name: a.txt
Created-By: 1.2.2 (Sun Microsystems Inc.)
PropertyOfA: TRUE


Here is the manifest.txt test case:

% cat manifest.txt
Name: a.txt
PropertyOfA: TRUE