Sign the JAR File
Now you are ready to sign the JAR file. Type the following in your command window to sign the JAR file
Count.jar , using the private key in the keystore entry aliased by
signFiles , and to name the resulting signed JAR file
jarsigner -keystore examplestore -signedjar sCount.jar Count.jar signFiles
You will be prompted for the store password and the private key password.
jarsigner tool extracts the certificate from the keystore entry whose alias is
signFiles and attaches it to the generated signature of the signed JAR file.
Time stamping the signature is recommended, and a warning is shown if the signature is not time stamped. The time stamp is used to verify that the certificate used to sign the JAR file was valid at the time of signing. See Signing JAR Files for information on the
jarsigner options for including a time stamp with the signature.