Java - Float Class doubleValue() Method

Float class doubleValue() method: Here, we are going to learn about the doubleValue() method of Float class with its syntax and example. By Preeti Jain Last updated : March 21, 2024

Float class doubleValue() method

doubleValue() method is available in java.lang package.
doubleValue() method is used to return the value denoted by this Float 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 Float 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 Float to double) value represented by this Float object.

Example

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

public class DoubleValueOfFloatClass {
    public static void main(String[] args) {
        // Variables initialization
        float f1 = 20.10f;
        float f2 = 30.10f;

        // It returns double value denoted by this Float ob1 object
        // and converted to a double by calling ob1.doubleValue()
        Float ob1 = new Float(f1);

        // Display ob1 result
        System.out.println("ob1.doubleValue():" + ob1.doubleValue());

        // It returns double value denoted by this Float ob2 object
        // and converted to a double by calling ob2.doubleValue()
        Float ob2 = new Float(f2);

        // Display ob2 result
        System.out.println("ob2.doubleValue():" + ob2.doubleValue());
    }
}

Output

ob1.doubleValue():20.100000381469727
ob2.doubleValue():30.100000381469727

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