# divide « double « Java Data Type Q&A

### 1. Double value returns 0    stackoverflow.com

Here's an example:

``````Double d = (1/3);
System.out.println(d);
``````
This returns 0, not 0.33333... as it should. Does anyone know?

### 2. Error using Double type in Java...this has to be so simple, I'm almost ashamed I am asking it here    stackoverflow.com

Okay. I have been bashing my head against the wall for like 2 hours now trying to figure out why in the world `double answer = 364/365;` is telling me that ...

### 3. Problem with division using doubles    java-forums.org

public class test { public static void main(String [] args) { double one, two; double c; double boil = 212; String output; one = 5; two = 9; c = (boil - 32) * (one / two); output = boil + " in Fahrenheit is " + c + " in Celsius."; System.out.println(output); } }

### 4. Strange division of doubles    java-forums.org

I have the following very simple Java code: double dr = 0.1; double x; cora = x/dr; In a for loop x goes from 0.2 to 0.35. When I divide them, the first two results are perfect, but the next results are not "rounded" but end at .999999999999996. Results from Java code: cora: 2.0 cora: 2.5 cora: 2.9999999999999996 cora: 3.4999999999999996 This ...

### 6. Double value divided by double value is inaccurate    forums.oracle.com

Hi all, I've got a question to ask. If you know how to solve this problem, please help! I'd really appreciate it. It has to do with division using values of the data type long. Here is the code: output.println("Enter x"); long a = input.nextLong(); long b = input.nextLong(); output.println("Enter y"); long c = input.nextLong(); long d = input.nextLong(); output.println("Enter z"); ...

### 7. Trouble with double division    forums.oracle.com

I have found the problem, and it was not with the Java's calculation on a double, it was in fact the inverse of the cosine (Math.acos) on that result which was producing the NaN value. Still, if on my calculator I punch in acos(1), I get 0, not NaN. Thanks everyone for your help. It would seem I missed something obvious ...

### 8. Strange results from method using double division    forums.oracle.com

Hi, I crafted the following method (just learning) but it's not giving me the results I expected. For example, if the final calculation is 4 / 2, it should give 2, but I get a figure with loads of decimal places. Can anyone please advise on where I am going wrong? public static double avLength() { int count = 0; int ...