How to roundoff addition of two double variables

class Example
     public static void main(String args[])
          double k=1.236+2.138;
          System.out.println(k);
}output of program:
3.3739999999999997
so how will i get the exact value of the addition

etgohomeok wrote:
If you know it's going to be 3 decimal places every time, you could always do:
double d1 = 1.236;
double d2 = 2.138;
int i1 = (int) d1 * 1000;
int i2 = (int) d2 * 1000;
int iResult = i1 + i2;
double dResult = ((double) iResult) / 1000;You could collapse that into a couple of lines and eliminate alot of the variables, but that's the general point...Unfortunately, that gives the wrong answer. Try running it and see.

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