No return type in method.

Question

So ,as you can see in 29 there is a error because the method has no return type. I dont understand why because there is return

https://code.sololearn.com/cEtcBEu2kFA0/?ref=app

Answer 1

a method which don't return a value: void + methodName()
a method which returns a value:
returning datatype + methodName()

public AnyName() is used for constructors.

Answer 2

Your "CalcVolume" method return a data type, more precisely, the volum (a float or a double). With this, you need to inform the type return in method's assignature like this:

public float calcVolume() {
int volume = height * length * breadth;
return volume;
} // here the method return a float

public double calcVolume() {
int volume = height * length * breadth;
return volume;
} // here, a double

In your case, I guess double type return is better, but you can define as double return as well float return using Overload (thing of OOP)

Answer 3

thank you but why cant i use public calcVolume() ? i mean it is a function not a data type?