how to get float value from integer in java [duplicate]

Question

Possible Duplicate:
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.

Answer 2

The output is 2.0f because both the numerator and denominator are integers hence it is using integer arithmetic.

i/10 returns 2 which when typecasted to float, converted to 2.0f.

You need to typecast atleast one of the num/denominators to float to make FP division

int i = 23;

float f = (float)i/10; 

or

float f = i/10f; 

Possible ways for this.

float z = (float) x / y;

or

float z = x / (float) y;

or(not required)

float z = (float) x / (float) y;