Signing jar and appending to the original manifest

Question

I create my jars with a manifest file with some entries
like Specifiaction and implementation versions
however when I sign them the manifest is replaced and I lose my manifest entries
Am I doing something wrong is that what is supposed to happen?
If that is normal what do I do to keep my original manifest entries
Thanks

Answer 1

I could not reproduce with jdk 1.5.0_04, did not use a package though.
here is the java class:
import java.applet.*;
public class test extends Applet {
     public void start() {
          System.out.println("this is start");
     public void init(){
          System.out.println("this is init");
}The manifest:
Manifest-Version: 1.0
Created-By: 1.5.0_04 (Sun Microsystems Inc.)
Specification-Title: The title
Specification-Version: 1.2
Specification-Vendor: the vendor
Implementation-Title: java.util
Implementation-Version: build57
Implementation-Vendor: the vendor
The batchfiile creating the signed jar:
del *.cer
del *.com
del *.jar
del *.class
javac test.java
keytool -genkey -keystore harm.com -keyalg rsa -dname "CN=Harm Meijer, OU=Technology, O=org, L=Amsterdam, ST=, C=NL" -alias harm -validity 3600 -keypass password -storepass password
rem keytool -export -alias harm -file exportPublicKey.cer -keystore harm.com -storepass password
rem jar cfm0 test.jar manifest.txt test.class
jar cfm0 test.jar manifest.txt test.class
jarsigner -keystore harm.com -storepass password -keypass password -signedjar sTest.jar test.jar harm
del *.class
pause
Both test.jar and sTest.jar contain the information from manifest.txt.