Float precision with specific numbers

Question

The following value gives me wrong precision. It is observed with only specific numbers. It might be a floating representation problem, but wanted to know the specific reason.

Answer 1

If you want decimal numbers to come out as exactly as you entered them in Java, use BigDecimal instead of float.

Floating point numbers are inherently inaccurate for decimals because many numbers that terminate in decimal (e.g. 0.1) are recurring numbers in binary and floating point numbers are stored as a binary representation.