Can Java functions accept variables that are floats?

Question

Why am I seeing this warning in the Java compiler?

Exception in thread "main" java.lang.Error: Unresolved compilation problem:
The method sum(float, float) in the type calc is not applicable for the arguments (double, double)

Answer 1

Cast the arguments before passing to the function

sum((float)arg1, (float)arg1);

But I'd recommend you use double as your function parameter types instead of float. Double is more precise than float and so Java allows float-to-double conversions but not double-to-float conversions. Because the second type u mentioned might lose some information(accuracy or some floating point digits).

I always use double and almost never use float =)

Answer 2

Example:

Let's see a simple example to display float type variable.

public class FloatExample1 {

public static void main(String[] args) {

float num1=5.5f;
float num2=5f;
System.out.println("num1: "+num1);
System.out.println("num2: "+num2);
}
}

Output:

num1: 5.5
num2: 5.0

Answer 3

Here look how it works with float

https://code.sololearn.com/cWP0Ia9R4w87/?ref=app

Answer 4

If you pass floating point literals then FYI floating point literals are of `double` type rather than `float`.

But you can specify the literal as `float` by appending float tyoe notation e.g.

YourClass.yourMethod( 1.23f, 4.56f );