CODEWITHSUNDEEP
packaginguberjarceylon
user7610
user7610

Reputation: 28811

How do I create an uber jar in Ceylon

I have a Ceylon project. I would like to distribute it in an uber jar that includes all dependencies, so that it can be executed with simple

java -jar myproject.jar

Is this possible in Ceylon?

Upvotes: 3

Views: 71

Answers (2)

Renato
Renato

Reputation: 13690

The Ceylon Gradle Plugin can do it for you, just use the createJavaRuntime task:

gradle createJava

Run the application with:

bash build/java-runtime/run.sh

or the equivalent in your OS.

If you copy the java-runtime directory to a machine that has no Ceylon installed, only the JVM, it will work.

It's not a fat jar, but you can distribute this as a zip and get most of the same benefits.

Upvotes: 0

user7610
user7610

Reputation: 28811

The upcoming Ceylon 1.2.3 has the fat-jar subcommand. See https://github.com/ceylon/ceylon/issues/5932 which tracks this feature. To use it now, you need to download a nightly build from http://ceylon-lang.org/download/ or build Ceylon yourself.

With Ceylon 1.2.3, assuming your module is called myproject, you can do

ceylon-1.2.3/bin/ceylon fat-jar myproject
java -jar myproject-1.0.0.jar

This executes code in function run() in file source/myproject/run.ceylon.

The uberjar for a simple hello world program has currently 2.4 MiB.

Upvotes: 2

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