How to check if BigDecimal variable == 0 in java?

Question

I have the following code in Java;

BigDecimal price; // assigned elsewhere

if (price.compareTo(new BigDecimal(\"0.00\")) == 0) {
    return true;
}
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Answer 1

Alternatively, I think it is worth mentioning that the behavior of equals and compareTo methods in the class BigDecimal are not consistent with each other.

This basically means that:

BigDecimal someValue = new BigDecimal("0.00");
System.out.println(someValue.compareTo(BigDecimal.ZERO) == 0); // true
System.out.println(someValue.equals(BigDecimal.ZERO)); // false

Therefore, you have to be very careful with the scale in your someValue variable, otherwise you would get unexpected result.