Java random digit to round up the seond decimal place

Question

I using java Math.random to generate any double digit

For example: 13.56 how to make this>>>>13.60
13.54 how to make this>>>>15.50

How to make sure i round up to second decimal place to be zero

Answer 1

- start with a double of any precision
- multiply by 10
- use Math.round()
- divide by 10.0
Result is a double with one decimal digit.
Make sure to divide by 10.0 (double) and not by 10 (int) because Math.round will return a long type, and you want to do floating point division rather than integer division.