Java to JavaScript Without calling it from Main Function

[TamilpriyaSync]

I have 3 simple java files in src/main/java/org/teavm/helper directory:

Main.java
package org.teavm.helper;

public class Main {
public static void main(String[] args) {
System.out.println("Hi From Client.java");

    Parent parent = new Parent();
    parent.showMessage(10);

    Child child = new Child();
    child.showMessage(10); 
}

}

Parent.java
package org.teavm.helper;

public class Parent {
String name = "Parent";

void showMessage(int number) {
    int doubled = number*2;
    System.out.println("Parent Class doubles " + number + " to: " + doubled);
}

}

Child.java
package org.teavm.helper;

class Child extends Parent {

@Override
void showMessage(int number) {
    int tripled = number*3;
    System.out.println("Child Class triples " + number + " to: " + tripled);
}

}

Goal: I want to convert the Parent.java and Child.java Java classes to JavaScript using TeaVM without calling them from the Main.java. When I achieve this, I will be able to scale this to a larger project.

Is it possible to achieve this without invoking them directly in Main.java? If yes, how can I set up TeaVM to convert these classes to JavaScript successfully without an entry point in Main.java? Kindly help me to achieve this

Thank you in advance.

PS: I tried the below ways by referring the internet:
Import Annotation - org.teavm.interop.Import is actually used to use JS code into Java code.
Export Annotation - org.teavm.interop doesn't contain 'Export'
Static Block - Build was successful but the JS was not created
Preserve Annotation - org.teavm.interop doesn't contain 'Preserve'
JS Body Annotation - JS requires more manual code rewrite
Class Reflection - Only @ReflectClass annotation throws error

[konsoletyper]

Sure. Please, read this: https://teavm.org/docs/runtime/js-modules.html