adding n number of zeros after decimal

Question

I need to give accuracy of a number entered by user till few digit. like if user enter some random value and gives that he wants accuracy till three digit then I need to rou

Answer 1

You can indeed use NumberFormat to do this

double amount = 15;
NumberFormat formatter = new DecimalFormat("#0.000");
System.out.println("The Decimal Value is:"+formatter.format(amount));