How to move window graphical objects while the cursor is in a certain position?

Question

Java

Hello!
To make it clear, I will add here a picture with which I explained my problem to the infidels.

On my own, I wrote the following code:

scene.setOnMouseMoved(e -> {
            System.out.println(e.getX()+" "+e.getY());

        if(e.getX()>750)
        {
          camera.cameraControlX(-0.5);
        }else if(e.getX()<50)
        {
          camera.cameraControlX(0.5);
        }
        if(e.getY()>550)
        {
          camera.cameraControlY(-0.5);
        }else if(e.getY()<50)
        {
          camera.cameraControlY(0.5);
        }

In the cameraControlX||Y function, I simply move the pictures around the scene. This works, but it only works while the cursor is in motion.
On stackoverflow, I was offered this option:

boolean north = false, east = false, south = false, west = false;

    scene.setOnMouseMoved(e -> {
        if(e.getX()>750)
        {
            east = true;
        }else if(e.getX()<50)
        {
            west = true;
        }else{
            east = false;
            west = false;
        }
        if(e.getY()>550)
        {
            south = true;
        }else if(e.getY()<50)
        {
            north = true;
        }else{
            north = false;
            south = false;
        }
    });
    AnimationTimer timer = new AnimationTimer() {
        @Override
        public void handle(long now) {
            if(east)camera.cameraControlX(-0.5);
            if(west)camera.cameraControlX(0.5);
            if(south)camera.cameraControlY(-0.5);
            if(north)camera.cameraControlY(0.5);
        }
    };
    timer.start();

But, the variables that we pass through the lambda, or just use an anonymous class, should not change their value. Should be final.
How to be? Which way to look?

Answer 1

If someone is interested in how I got out of the situation, then I just created the final object. Those. the logic is as follows: if you cannot change the value of the final variable in the lambda, then the properties of the object change twice.