enum简单使用

0~10
10~50
50~100
100~999999
0~999999

public void setWeight(){
    this.minWeight = FuelWeight.getFuelWeight(this.weightCode).minWeight;
    this.maxWeight = FuelWeight.getFuelWeight(this.weightCode).maxWeight;
}
enum FuelWeight{
    weightCode_1(1,0,10),
    weightCode_2(2,10,50),
    weightCode_3(3,50,100),
    weightCode_4(4,100,999999),
    weightCode_5(5,0,999999);
    private Integer code;
    private Integer minWeight;
    private Integer maxWeight;
    FuelWeight(Integer code, Integer minWeight,Integer maxWeight) {
        this.code = code;
        this.minWeight = minWeight;
        this.maxWeight = maxWeight;
    }
    public static FuelWeight getFuelWeight(Integer code) {
        switch (code){
            case 1:  return weightCode_1;
            case 2:  return weightCode_2;
            case 3:  return weightCode_3;
            case 4:  return weightCode_4;
        }
        return weightCode_5;
    }
}