Reference instance of another PApplet sketch in Eclipse

brokenAlgorithm

I use Eclipse and have a main function which calls 2 different PApplets:

public static void main(String... args){
    PApplet.main("Backend.LaunchBackend");
    PApplet.main("Interface.LaunchInterface");
}

Inside Backend, I have several classes which reference to LaunchBackend and are constructed via SomeClass(PApplet parent).

Class SomeClass{
    LaunchBackend parent;
    public SomeClass(LaunchBackend parent){
    this.parent = parent;
}

While coding from within the LaunchBackend PApplet, I can obviously instanciate these via:

SomeClass someClass = new SomeClass(this);

But what if I want to instanciate the class not from within the LaunchBackend PApplet, but from within the LaunchInterface PApplet? I still want the instance of the object to point to LaunchBackend as its parent, like this:

Within Interface:

SomeClass someClass = new SomeClass(***reference to the LaunchBackend PApplet instance***);

quark

I assume that Backend and Interface are package names. If they are then in Java package names start with a lowercase letter. Hence my assumption.

I have not tested this but I think it should work.

import Backend.*;
import Interface.*;

public static void main(String[] args) {
    String[] a = {"MAIN"};

    LaunchInterface launchInterface = new LaunchInterface();
    LaunchBackend launchBackend = new LaunchBackend();

    // These methods need to be created in these 2 classes
    // and should store the references. Do this before launching the PApplets
    launchInterface.setBackend(launchBackend);
    launchBackend.setInterface(launchInterface);

    // Launch the PApplets
    PApplet.runSketch( a, launchInterface);
    PApplet.runSketch( a, launchBackend);
}