Rounding a double to two decimal places without using DecimalFormat

Question

I wanted to know is it possible format a double to round to two decimal places with trailing zeros without using DecimalFormat, or importing anything for that matter? I've been trying to think of one for the past half hour and I can't figure it out.

Answer 1

You can use String.format();

String s = String.format("my double: %.2f", 3.54123);
System.out.println(s);

or directly printf

System.out.printf("my double: %.2f%n", 3.54123);

Answer 2

How about ?

(((int)(number * 100))/100.0F) 

Example

• ide one demo