“Constructor cannot be applied to given types” when constructors have inheritance

Question

This is my base class:

abstract public class CPU extends GameObject {
    protected float shiftX;
    protected float shiftY;

    public CPU(float x, float          


        

Answer 1

The final object needs to in initialize the super class using one of its constructors. If there is a default (no-parameter) constructor then the compiler calls it implicitly, otherwise the subclass constructor needs to call it using super as the first line of its constructor.

In your case, that would be:

public Beam(float x, float y, float shiftX, float shiftY, int beamMode) { 
  super(x, y)

And remove the assignments to this.x and this.y later.

Also, avoid making them protected, makes it difficult to debug. Instead add getters and if absolutely necessary setters