Java is not using the decimals

Question

So I am writing a program in which I am using a Double, but java is not using the decimal point. For example:

I have

double F;

F = 9/5;

Instead of java giving me 1.8 as an answer, it is just giving me back 1.0

Thanks for all the help

You need to have 9.0/5.0 because java only outputs integers for math on integers. — F. Stephen Q, Aug 28 '15 at 20:36

score 2 · Answer 1 · answered Aug 28 '15 at 20:31

2

Change it to

F = (double)9/5;

because 9/5 will give int which then converted to double giving you 1.0.

answered Aug 28 '15 at 20:31

singhakash

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score 0 · Answer 2 · answered Aug 28 '15 at 20:32

When you write

F = 9/5;

Java performs the integer division of 9 and 5, which is 1. Because the destination variable F is a float, Java converts the 1 into the equivalent 1.0. If you want it to perform a floating-point division, use 9.0/5. That way, the 5 is promoted to the equivalent 5.0, and the division is thus 9.0/5.0=1.8.

Java is not using the decimals

2 Answers2