Let's say you create an AppClient in Eclipse and appClientModule > default package > Main.java contains the following.

public class Main {
    public static void main(String[] args) {
        System.out.println(args);
    }
}

In Eclipse, you can export the project as a Runable JAR file and then place the JAR file on a Linux system, and use the java command to run the JAR file.

~]# java -classpath my.jar Main Hello
Hello