FactoryMethodPattern

FactoryMethodPatternEg1.java

public enum CarType {
    SMALL, LUXURY
}
public Interface class Car { // abstract class or Interface.
  
}

public class CarFactory {
    public static Car buildCar(CarType model) {
        Car car = null;
        switch (model) {
        case SMALL:
            car = new SmallCar();
            break;
        case LUXURY:
            car = new LuxuryCar();
            break;
        default:
            // throw some exception
            break;
        }
        return car;
    }
}

//Client code
CarFactory.buildCar(CarType.SMALL)