Question

Rounding Issue

For Example

1. 598.59 ya 591.45 to be convert 600.
2. 541.0 to be convert 550.

3. 541.59 to be convert 550.

   Just check the last 2 digit ignore the
   decimal value. if last 2 digit in
   between 11- 19 it will converted 20 if
   21-29 then will converted 30 and so on..

So What can i do for this.
Need ur Help.

thanks in advance….

Answer 1

Use MathUtils [Commons Math] :
– static double round(double x, int scale) or
– static double round(double x, int scale, int roundingMethod)

MathUtils.round(598.59, -1); // 600.0
MathUtils.round(591.45, -1, BigDecimal.ROUND_CEILING); // 600.0
MathUtils.round(541.0, -1, BigDecimal.ROUND_CEILING); // 550.0
MathUtils.round(541.59, -1, BigDecimal.ROUND_CEILING); // 550.0

---

For update in question

Just check the last 2 digit ignore the
decimal value. if last 2 digit in
between 11- 19 it will converted 20 if
21-29 then will converted 30 and so
on..

MathUtils.round((double) 111, -1, BigDecimal.ROUND_UP); // 120.0
MathUtils.round((double) 119, -1, BigDecimal.ROUND_UP); // 120.0
MathUtils.round((double) 121, -1, BigDecimal.ROUND_UP); // 130.0
MathUtils.round((double) 129, -1, BigDecimal.ROUND_UP); // 130.0

Cast to double to make sure round(double x, ...) is use, instead of round(float x, ...).