class Car {
	int seats = 0;
	boolean cityCar =  false;
	boolean cabriolet = false;
	boolean sportCar = false;
	boolean tripComputer = false;
	boolean gps = false;
}

class CarBuilder {
	int seats = 0;
	boolean cityCar =  false;
	boolean cabriolet = false;
	boolean sportCar = false;
	boolean tripComputer = false;
	boolean gps = false;

	new CarBuilder() {
    }

    Car build() {
    	Car car = new Car();
    	car.seats  = this.seats;
    	car.cityCar  = this.cityCar;
    	car.cabriolet  = this.cabriolet;
    	car.sportCar  = this.sportCar;
    	car.tripComputer  = this.tripComputer;
    	car.gps  = this.gps;
	}

    CarBuilder withSeats(int seats) {
    	this.seat = seats;
    	return this;
	}

	CarBuilder withCityCar() {
    	this.cityCar = true;
    	return this;
	}

	CarBuilder withCabriolet() {
    	this.cabriolet = true;
    	return this;
	}

	CarBuilder withSportCar() {
    	this.sportCar = true;
    	return this;
	}

	CarBuilder withTripComputer() {
    	this.tripComputer = true;
    	return this;
	}

	CarBuilder withGPS() {
    	this.gps = true;
    	return this;
	}

}

// Client
public class Client{
	public static void main(String args[]){
		Car car  = new CarBuilder()
				.withSeats(5)
				.withCityCar()
				.withCabriolet()
				.withSportCar()
				.withTripComputer()
				.withGPS().build();
		....
	}
}