The hashCode() method of Double class is a built-in method use to return the hashcode value of this Double object.
Syntax:
DoubleObject.hashCode()
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:
Example 1:
// Java code to demonstrate// Double hashCode() Method class GFG { public static void main(String[] args) { double d = 118.698; // creating Double object. Double value = new Double(d); // hashCode() method Double class int output = value.hashCode(); // printing the output System.out.println("Hashcode Value of " + value + " : " + output); }} |
Output:
Hashcode Value of 118.698 : 1215072837
Example 2:
// Java code to demonstrate// Double hashCode() Method class GFG { public static void main(String[] args) { int i = -30; // creating Double object. Double value = new Double(i); // hashCode() method Double class int output = value.hashCode(); // printing the output System.out.println("Hashcode Value of " + value + " : " + output); }} |
Output:
Hashcode Value of -30.0 : -1069678592
