Using 'this' on methods

class Computer{
  public int brightness;
  public int volume;

  public void setBrightness(int inputBrightness){
    this.brightness = inputBrightness;
  }

  public void setVolume(int inputVolume){
    this.volume = inputVolume;
  }

  // 'This' method calls other methods from the class. Rather than create a new object, we use this as the object.
  // 'this' serves as a placeholder for whatever object was used to call the original method.
  public void resetSettings(){
    this.setBrightness(0);
    this.setVolume(0);
  }


    public static void main(String[] args){
        Computer myComputer = new Computer();
        myComputer.setBrightness(8);
        myComputer.setVolume(24);
        System.out.println(myComputer.brightness);
        System.out.println(myComputer.volume);
        myComputer.resetSettings();  //now both attributes will be reset to 0
        System.out.println(myComputer.brightness);
        System.out.println(myComputer.volume);
    }
}