Solved KDR.....

ok so i was just trying to add a KDR stat to my server and I Divided the Kills by Deaths and it doesn't give me the Decimals it only gives me Whole Number version. Here is my code

Code:java

  double KDR2 = conf.getInt("Kills") / conf.getInt("Deaths");
        conf.set("KDR", KDR2);
        try {
            conf.save(file);
        } catch (IOException e) {
            e.printStackTrace();
        }
        double KDR3 = conf.getDouble("KDR");
p.sendMessage("Your KDR is " + KDR2)

 

line 1
declare KDR as a double instead of an int
and change Kills and Deaths to doubles before you divide them

actually I think if you only change Kill to double it will return a double

 

Changing either one of them to a double will give you a double, yes.

 

remremrem
Why would kills need to be a double when it is counted in "INT"ervals?

 

ASHninja1997
Umm, what is your goal anyways?

 

remremrem
Yes that made it work thanks. (Working code below)

Code:java

 double KDR2 = conf.getDouble("Kills") / conf.getInt("Deaths");
        conf.set("KDR", KDR2);
        try {
            conf.save(file);
        } catch (IOException e) {
            e.printStackTrace();
        }
        double KDR3 = conf.getDouble("KDR");
p.sendMessage("Your KDR is " + KDR2);

 

int stands for integer. An integer is basically a number without a decimal. A double on the other hand, does allow decimal places. You cannot divide two integers together to get a double. You need to have a double and an int or both doubles.

 

xTrollxDudex
Just wondering.
The KDR will come up as a long Rational Number.
Is there a way to make it only display the decimal up to the Hundredths?

amhokies
Thanks for the reply but i have been coding for a bit now and I know what a int and double is along with other variables .
Thanks for explaining the Last sentence that one did help.
But again thanks for the reply

Nvm I just changed it to float......It works better

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

If you want to round the KDR to three or two decimals, you can use the BigDecimal class. Here's an example of how to use it:

Code:java

double kdr = 3.142151261; //example kdr
BigDecimal rounded = new BigDecimal(kdr).setScale(3, BigDecimal.ROUND_HALF_UP);
player.sendMessage("Your KDR is " + rounded.toString() + ".);

 

Only to give you a much more flexible version for converting a double to String, I suggest you to use the static method String.format. I'm not sure if it is faster then using a new instance of BigDecimal, but it is for sure the flexiblest way of converting a number of any standard type to a String. It enables you to convert the value into any good known representation. Look into format strings to get more details on how you can use String.format.