Run the jar tool without arguments to see its usage. You pass it the -M option to create a JAR without a manifest. You won't be able to run the JAR file with java -jar, but you will still be able ...

In this case, the JAR file to digitally sign is named spock-lizard-1.0.jar. The name of the digitally signed JAR file will be signedjar.jar. The command to perform this operation is as follows: Sign a ...

You must create a JAR folder in your project, then specify the JAR file you want to include in your application. The JAR is automatically included with the app when you run it on your device.