Round « Integer « Java Data Type Q&A

1. Rounding a double to turn it into an int (java) stackoverflow.com

Right now i'm trying this:

    int a = round(n) ;

where n is a double but its not working. What am i doing wrong?

2. How to round integer in java stackoverflow.com

I want to round the number 1732 to the nearest ten, hundred and thousand. I tried with Math round functions, but it was written only for float and double. How to ...

3. Will typecasting a float (say 3.56) to an integer in Java round to the nearest integer or just truncate the decimals? stackoverflow.com

Will typecasting a float (say 3.56) to an integer in Java round to the nearest integer or just truncate the decimals? Say you have: int b = (int)3.75; what will be stored in b? ...

4. converting double to integer in java stackoverflow.com

very simple question: I know that if you do this:

double x = 1.5;
int y = (int)x;

you get y=1. If you do this:

int y = (int)Math.round(x);

You'll likely get 2. However, I am wondering: ...

5. How does conversion from double to int work in Java? stackoverflow.com

For the following code (Java):

double d = (double) m / n; //m and n are integers, n>0
int i = (int) (d * n);

i == m

Is the last expression always true? If it's ...

6. how to round up integer division and have int result in java stackoverflow.com

i just wrote a tiny method to count the number of page for cell phone sms.i had not option to round up using Math.ceil and honestly it seems to be very ugly. here ...

7. Integer round in java stackoverflow.com

In Java, I want to round up to the closest integer value eliminating the last 2 digits from 54321 -> 54300 or 8765 -> 8800

8. Rounding a Double...to the nearest Integer, Tenths place, Hundredths place, etc.. coderanch.com

Hello. I need some help! I am trying to have a program where the user can input a value, say 7, and have the code round the value to the nearest integer, nearest tenths place, nearest hundredths place and nearest thousandths place. Here is my code. import java.awt.Graphics; import javax.swing.*; public class RoundingApplet extends JApplet { double number1; float result1; float ...

9. howto round integer ? coderanch.com

10. Rounding 'int' values to nearest Tens coderanch.com

Oh my goodness, what a lot of complex solutions to a simple task! (Yes, I know, starting my post like this will doubtless mean my solution is wrong and I will be made to eat humble pie, but anyway...) There is no need to use floating-point or any Math methods. Stick to integer arithmetic, which is faster, simpler and less prone ...

11. Need a function that converts a double into a whole int, rounding the decimal and ret coderanch.com

12. Round up int coderanch.com

Integer arithmetic always rounds down (towards zero). If you look at the documentation, those methods that you use take floating point. You can't round() or ceil() a number, when it is always a whole number. If you want to control rounding, I would suggest that you convert to floating point before you do the operation. This way, you'll have a floating ...

13. round an integer to nearest 1000 forums.oracle.com

14. Need a function that converts a double into a whole int, rounding the deci forums.oracle.com

15. Rounding error from int -> byte cast forums.oracle.com

LOL, sorry. I've been up all night coding on this project, and my thoughts are very scattered, Ted. My question is simply: can you see anything that could be causing a rounding error? I don't see what could be causing any problems with my bit operations; I can't see any calculational discrepancies that are made possible by my code. Sadly it ...