longValue
The longValue() method is a method in Java that belongs to the Number class. This method is used to return the long value of the number object. If the number object is a floating-point number, the long value will be truncated, which means the fractional part will be discarded. If the number object is a larger value than what can be represented by a long, it will result in an ArithmeticException. The longValue() method is useful when a programmer wants to convert a number object to a long primitive type
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