Double doubleValue() method in Java with examples

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The doubleValue() method of Double class is a built in method to return the value specified by the calling object as double after type casting. Syntax:

DoubleObject.doubleValue()

Return Value: It return the value of DoubleObject as double. Below programs illustrate doubleValue() method in Java: Program 1:

Java

// Java code to demonstrate
// Double doubleValue() method
 
class GFG {
    public static void main(String[] args)
    {
 
        // Double value
        Double a = 17.47;
 
        // wrapping the Double value
        // in the wrapper class Double
        Double b = new Double(a);
 
        // doubleValue of the Double Object
        double output = b.doubleValue();
 
        // print doubling the output
        System.out.println("Double value of "
                           + b + " is : " + output);
    }
}

Output:

Double value of 17.47 is : 17.47

Program 2:

Java

// Java code to demonstrate
// Double doubleValue() method
 
class GFG {
    public static void main(String[] args)
    {
 
        String value = "54.1";
 
        // wrapping the Double value
        // in the wrapper class Double
        Double b = new Double(value);
 
        // doubleValue of the Double Object
        double output = b.doubleValue();
 
        // print doubling the output
        System.out.println("Double value of "
                           + b + " is : " + output);
    }
}