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To round to decimals, there is 2 ways of doing it:

Say you have double x which is a long double.

a.

int rounded=(int)(x*100);  //I forced x*100 to be an int which loses decimal
double newX=rounded/100.00;

            

Better way:

b.

System.out.println( java.text.NumberFormat.getCurrencyInstance().format(x));