✌🏿 Yo Calin, it's been years since I've considered myself a Java programmer, but I can help if you're just trying to create an uberjar... consider using a build tool like Maven. Assuming you're using Maven (Apache Project Manager)

1. maven MainProgram.java --uber-jar or maven *.java --uber-jar (wildcard *).

2. java MainProgram.jar

Why is a build tool recommended?
Why not just javac? Depends on what kind of executable you want, dependency complexity, etc.
Here's a nice diagram I'm commiting to memory by a kind Mr. Falkner
.

In short, if you want to guarantee your java executable has ALL it needs to run platform-agnostic, compile it's dependencies, runtime, and project code all together with zie uber-jar!.

That's not so simple actually
Big applications like Android Studio or IntelliJ just includes their own copy of the JRE inside the app.

I googled a bit for you and found this docs.oracle.com/javafx/2/deploymen...

and also this

<plugin&gt
    <groupId>io.github.fvarrui</groupId&gt
    <artifactId>javapackager</artifactId&gt
    <version>1.4.2</version&gt
    <executions>
        <execution>
            <phase>package</phase>
            <goals>

The solution is platform-specific. I believe you can find on SO.

But in essence, bundle JRE with the app.