Question

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How can I convert integer into float in Java?

I got the problem with this code.
I have two variable int i and float f.


int i = 23;

float f = i/10;


I suppose the value in f variable should be 2.3

but the real output value in f is 2.0

Why result occurred like this and how can i get the float value 2.3

Answer 1

float f = i/10

is using integer arithmetic (both numerator and denominator are integers). The result is then promoted to a float type.

If you do

float f = i/10f

then you’ll force floating point arithmetic (the denominator is now non-integer). The successive f indicates that 10f is treated as floating point. Specifying 10.0 or 10d would indicate a double.