Please give some examples when we can encounter NaN in java

Question

e. g. 0/0

Answer 1

Math.log(-5)

Answer 2

Math.sqrt(-5)

Answer 3

4/0
NaN stands for Not a Number //

Answer 4

Thanks anubhav but cpp and java may have different rules for NaN

Answer 5

@Dayve Actually i know nan means not a number and i also know one example division by zero but can you please provide some more examples