0

我从示例中获取了此代码，但我不知道如何计算基本单位的值。这是转换能量的代码：

public enum U_EnergyConverter implements UnitConverter {
energy_calories {
    @Override
    public double toBaseUnit(double amount) {
        return amount;
    }

},
energy_joules {
    @Override
    public double toBaseUnit(double amount) {
        return amount * 4.19;
    }
},
energy_kilocalories {
    @Override
    public double toBaseUnit(double amount) {
        return amount * 0.001;
    }

};
public abstract double toBaseUnit(double amount);

public double toUnit(double baseUnitAmount) {
    return baseUnitAmount * (1 / (toBaseUnit(1)));
}

我在上面的代码中使用的金额给了我错误的结果。而且我不知道从哪个来源可以获得单位转换的确切值！

感谢任何帮助

更新： 这是运行良好的质量单位代码：

public enum MassConverter implements UnitConverter {
mass_g {
    @Override
    public double toBaseUnit(double amount) {
        return amount;
    }

},
mass_kg {
    @Override
    public double toBaseUnit(double amount) {
        return amount * 1000.00;
    }

},
mass_oz {
    @Override
    public double toBaseUnit(double amount) {
        return amount * 28.3495231;
    }

},
mass_lb {
    @Override
    public double toBaseUnit(double amount) {
        return amount * 453.59237;
    }

};
public abstract double toBaseUnit(double amount);

public double toUnit(double baseUnitAmount) {
    return baseUnitAmount * (1 / (toBaseUnit(1)));
}
4

1 回答 1

1

像这样改变：

energy_kilocalories {
    @Override
    public double toBaseUnit(double amount) {
        return amount * 1000;
    }

};

toBaseUnit给定这些单位的值（如焦耳、千卡等），应返回卡路里值。这就是正确示例的作用。你的恰恰相反。

于 2014-05-06T14:07:31.270 回答