android 建造者模式简单认识

public class Car {
    private String name;
    private float speed;
    private float price;

    public Car() {
        // Car在初始化的时候设置参数
        this.name = "Car";
        this.speed = 102f;
        this.price = 1000f;
    }
    @Override
    public String toString() {
        return "Car{" +
                "name=‘" + name + ‘\‘‘ +
                ", speed=" + speed +
                ", price=" + price +
                ‘}‘;
    }

    public static class Builder {

        private Car mCar;

        public Builder(){
            mCar = new Car();
        }

        public Builder setName(String name) {
            mCar.name = name;
            return this;
        }

        public Builder setSpeed(float speed) {
            mCar.speed = speed;
            return this;
        }

        public Builder setPrice(float price) {
            mCar.price = price;
            return this;
        }

        public Car build(){
            return mCar;
        }
    }
}