The hashCode() method of Double class is a built-in method use to return the hashcode value of this Double object.
Parameters: It takes no parameters.
Return Type: It returns an int value. The value returned is (int)(v^(v>>>32)) where v is a long variable equal to Double.doubleToLongBits(this.doubleValue()).
Below is the implementation of hashCode() method:
Hashcode Value of 118.698 : 1215072837
Hashcode Value of -30.0 : -1069678592
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