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Method Math.rint () Returns an integer that is nearest to the value of the argument, in other words - rounds the fraction to the whole.

double rint(double d)

Detailed information about the parameters:

public class Test { 

   public static void main(String args[]) {
      double a = 10.200;
      double b = 10.500;
      double c = 10.501;
      double d = 10.675;
      
      System.out.println("a = " + Math.rint(a));
      System.out.println("b = " + Math.rint(b));
      System.out.println("c = " + Math.rint(c)); 
      System.out.println("d = " + Math.rint(d)); 
   }
}

a = 10.0
b = 10.0
c = 11.0
d = 11.0