Java - Double Class doubleValue() Method

Double class doubleValue() method: Here, we are going to learn about the doubleValue() method of Double class with its syntax and example. By Preeti Jain Last updated : March 23, 2024

Double class doubleValue() method

doubleValue() method is available in Double class of java.lang package.
doubleValue() method is used to return the value denoted by this Double object converted to type double (by casting).
doubleValue() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
doubleValue() method does not throw an exception at the time of conversion from Double to double.

Syntax

public double doubleValue();

Parameters

It does not accept any parameter.

Return Value

The return type of this method is double, it returns a converted (from type Double to double) value represented by this Double object.

Example

// Java program to demonstrate the example 
// of doubleValue() method of Double class

public class DoubleValueOfDoubleClass {
    public static void main(String[] args) {
        // Variables initialization
        double d1 = 18.20;
        double d2 = 19.20;

        // It returns double value denoted by this Double do1 object
        // and converted to a double by calling do1.doubleValue()
        Double do1 = new Double(d1);

        // Display do1 result
        System.out.println("do1.doubleValue(): " + do1.doubleValue());

        // It returns double value denoted by this Double do2 object
        // and converted to a double by calling do2.doubleValue()
        Double do2 = new Double(d2);

        // Display do2 result
        System.out.println("do2.doubleValue(): " + do2.doubleValue());
    }
}

Output

do1.doubleValue(): 18.2
do2.doubleValue(): 19.2

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