Float data type problem!

Question

Hi ALL,
I have a problem with float data type. Please tell me how to fix it if you know.
THANKS!
Source code:
class testFloatType {
public static void main(String args[]) {
float i = 0.9f, j = 0.8f, k = 0.1f;
System.out.println("i = " + i);
System.out.println("j = " + j);
System.out.println("k = " + k);
System.out.println("i - j = " + (i - j));
System.out.println("i - k = " + (i - k));
Result:
i = 0.9
j = 0.8
k = 0.1
i - j = 0.099999964
i - k = 0.79999995

Answer 1

Hi garazdawi,
I try to use the double to instead of float, but it still has a bit error!
Source code:
class testFloatType {
public static void main(String args[]) {
float i = 0.9f, j = 0.8f, k = 0.1f;
System.out.println("i = " + i);
System.out.println("j = " + j);
System.out.println("k = " + k);
System.out.println("i - j = " + (i - j));
System.out.println("i - k = " + (i - k));
double a = 0.9d, b = 0.8d, c = 0.1d;
System.out.println("a = " + a);
System.out.println("b = " + b);
System.out.println("c = " + c);
System.out.println("a - b = " + (a - b));
System.out.println("a - c = " + (a - c));
Result:
i = 0.9
j = 0.8
k = 0.1
i - j = 0.099999964
i - k = 0.79999995
a = 0.9
b = 0.8
c = 0.1
a - b = 0.09999999999999998
a - c = 0.8