Error while siging the jar using jar signer

[Anil Kumar]

Dear All,

I have unsigned applet. For signing it I have created a keystore using the following command

keytool -genkey -alias signFiles -keystore anilstore -keypass keypass123 -dname "cn=anil" -storepass storepass123 

Then I sign it using the following command

jarsigner -keystore anilstore -storepass storepass123 -keypass keypass123 -signedjar sign.jar sign.jar signFiles 

When I sign the jar (sign.jar ) using JAR Signer Command, I am getting exception message “Could not read LOC header ". The detail stack trace is attached for reference.

Exception in thread "main" java.lang.InternalError: jzentry == 0,
jzfile = 46472800,
total = 4,
name = Sign.jar,
i = 1,
message = couldn't read LOC header
at java.util.zip.ZipFile$3.nextElement(ZipFile.java:429)
at java.util.zip.ZipFile$3.nextElement(ZipFile.java:415)
at sun.security.tools.JarSigner.getManifestFile(JarSigner.java:1449)
at sun.security.tools.JarSigner.signJar(JarSigner.java:836)
at sun.security.tools.JarSigner.run(JarSigner.java:194)
at sun.security.tools.JarSigner.main(JarSigner.java:75)

I have rebuild the jar file and repeated the process again but I am getting the same error. Please let me know where I am
going wrong ?

[Ulf Dittmer]

You should specify a different file for the "-signedjar" option. As it is, the jar file is read and written to by the same process, which doesn't work.

[Anil Kumar]

Thanks a lot . I realized the mistake which I did. It is working now.