OOP Practice using Java

LightBulb.java

class LightBulb {
    boolean state;
    public LightBulb() {
        state = false;
    }
    public void turnOn() {
        this.state = true;
        this.printState();
    }
    public void turnOff() {
        this.state = false;
        this.printState();
    }
    public void printState() {
        if (state == true) {
            System.out.println("Lightbulb is ON");
        }
        else {
            System.out.println("Lightbulb is OFF");
        }
    }
    public static void main(String[] args) {
        LightBulb bathroom = new LightBulb();
        bathroom.printState();
        bathroom.turnOn();
    }
}