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Java Float class doubleValue() method with example

Float class doubleValue() method: Here, we are going to learn about the doubleValue() method of Float class with its syntax and example.
Submitted by Preeti Jain, on October 03, 2019

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.


    public double doubleValue();


  • 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.


// 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());



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