在不使用DecimalFormat的情况下将两位数舍入到小数点后两位

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