インスタンス031-消費金額に基づいてswitch文で割引を計算

public class ProductPrice {
    public static void main(String[] args) {
        float money = 1206; //  
        float rebate = 0f; //  
        if (money > 200) {
            int grade = (int) money / 200; //  
            switch (grade) { //  
                case 1:
                    rebate = 0.95f;
                    break;
                case 2:
                    rebate = 0.90f;
                    break;
                case 3:
                    rebate = 0.85f;
                    break;
                case 4:
                    rebate = 0.83f;
                    break;
                case 5:
                    rebate = 0.80f;
                    break;
                case 6:
                    rebate = 0.78f;
                    break;
                case 7:
                    rebate = 0.75f;
                    break;
                case 8:
                    rebate = 0.73f;
                    break;
                case 9:
                    rebate = 0.70f;
                    break;
                case 10:
                    rebate = 0.65f;
                    break;
                default:
                    rebate = 0.60f;
            }
        }
        System.out.println(" ：" + money);//  
        System.out.println(" " + rebate + " ！"); //  
    }
}

 ：1206.0
 0.78 ！