How to remove decimal values from a value of type 'double' in Java

Question

I am invoking a method called \"calculateStampDuty\", which will return the amount of stamp duty to be paid on a property. The percentage calculation works fine, and returns

Answer 1

String truncatedValue = String.format("%f", percentageValue).split("\\.")[0]; solves the purpose

The problem is two fold-

1. To retain the integral (mathematical integer) part of the double. Hence can't typecast (int) percentageValue
2. Truncate (and not round) the decimal part. Hence can't use String.format("%.0f", percentageValue) or new java.text.DecimalFormat("#").format(percentageValue) as both of these round the decimal part.