What Does NaN Mean in Java and How Do You Handle It?

Understanding NaN in Java

In Java, encountering NaN (Not a Number) in a floating-point operation signifies an undefined result. This arises when certain input parameters lead to a mathematically indeterminate outcome.

For instance, division by zero (0.0 / 0.0) is inherently undefined. Similarly, finding the square root of a negative number falls into the same category. These operations yield NaN as a default result, indicating the absence of a meaningful numeric value.

One should note that NaN is not a numeric data type but rather a special value that represents an invalid arithmetic result. When encountering NaN in a Java program, it's imperative to address the underlying issue that caused the undefined result.

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