摄氏温度转换为华氏温度的Java程序
class TemperatureCelsius { float degree; TemperatureCelsius(float degree1){ degree=degree1; } float toFahreheit(){ float k; k=(float)(5.0/9)*(degree-32); return k; } }public class C1{ public static void main(String[] args){ TemperatureCelsius a=new TemperatureCelsius(30.9f); System.out.println(a.toFahreheit()); } }这个怎么修改?