[Java] Encapsulation Example

// -EXAMPLE CODE, CONCEPT ONLY-

//Encapsulation is the idea that properties of objects should be insulated from unnecessary access. Every
//interaction should go through a method of the object! Notice that typeOfCar is public! Anyone can change!
//Should be private and use the getters and setters to modify the values.

Class Car{
    //Should probably not be public, or anyone can change it.
    public String typeOfCar;

    //Default constructor
    public Car(){
        this.typeOfCar = "Scooter";
    }

    //This constructor takes a String as an argument to define the type of car
    public Car(String type){
        this.typeOfCar = type;
    }

    //This method returns the type of car
    public String getType(){
        return this.typeOfCar;
    }

    //This method sets the type of car
    public void setType(String type){
        this.typeOfCar = type;
    }
}

int Main(){
    Car myCar = new Car("Ice Cream Truck");

    System.out.println("My car is a " + myCar.getType()); //Outputs "Ice Cream Truck"

    //Should not be exposed! Anything with access can change the car type! Should use setter instead.
    myCar.typeOfCar = "Goat";

    System.out.println("My car is a " + myCar.getType()); //Now outputs "Goat"

    return 0;
}