jlink: Application jars are not created in /bin folder

Question

I am executing below command to create an image.

jlink --module-path jars/:$JAVA_HOME/jmods --add-modules app.main,app.interfaces.impl,app.interfaces.otherimpl --output image

'app.main' module contains main class.

'app.interfaces.impl' and 'app.interfaces.otherimpl' are modules that implement interfaces in 'app.interfaces' module.

When I create the image using jlink command it creates java and keytool commands in bin folder, but no modules are copied.

$tree
.
├── image
│   ├── bin
│   │   ├── java
│   │   └── keytool

But when I execute 'java --list-modules', it is listing all the modules.

$./image/bin/java --list-modules
app.interfaces
app.interfaces.impl
app.interfaces.otherimpl
app.main
java.base@12.0.1
$

How can I run the main class from app.main module? where exactly the modules copied?

Answer 1

How can I run the main class from app.main module?

Apart from that to execute the main class, you can use the command line:

/image/bin/java -m app.main/app.main.MainClass

or use the --launcher option to create a launch script in the bin directory, eg

--launcher app=app.main/app.main.MainClass

which create "app" in the bin directory.