double or float datatype doesn't addup properly in a loop?

Question

In a loop I am adding 0.10 till I reach the desired #, and getting the index. This is my code :

    private static int getIndexOfUnits(float units) {
    int         


        

Answer 1

Exact representation is not available with Float datatype.

BigDecimal will help you.Below example might be helpful for you

BigDecimal decimal=new BigDecimal(10.0);
    for (int i = 0; i < 10; i++) {
        decimal=decimal.add(new BigDecimal(.1));
        System.out.println(decimal.floatValue());

    }