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# Java Integer doubleValue() Method

Java `doubleValue()` Method belongs to the `Integer` class. This method returns the Double Equivalent of the Integer after a widening primitive conversion(Conversion of a lower data type into a higher data type).

In short, this method is used to convert an Integer object into a double value.

### Syntax:

``public double doubleValue()  ``

### Parameter:

No parameter is passed in this method.

### Returns:

The numerical equivalent of the object of double type that is created after conversion.

## Example 1:

Here, using the `doubleValue()` function the integer values are converted into its numerical double equivalent.

``````import java.lang.Integer;

public class StudyTonight
{
public static void main(String[] args)
{
//converting integer object into double
Integer x = 99;
double i=x.doubleValue();
System.out.println(i);

Integer y = 23;
double d = y.doubleValue();
System.out.println(d);
}
}    ``````

99.0
23.0

## Example 2:

Here is a user defined example where anyone using this code can put a value of his choice and get the equivalent double value.

``````import java.util.Scanner;
public class StudyTonight
{
public static void main(String[] args)
{
try
{
System.out.print("Enter the value to be converted : ");
Scanner sc = new Scanner(System.in);
int i = sc.nextInt();
Integer n = i ;
double val = n.doubleValue();
System.out.println("Double Value is: " + val);
}
catch(Exception e)
{
System.out.println("not a valid integer");
}
}
}
``````

Enter the value to be converted : 800
Double Value is: 800.0
*******************************************
Enter the value to be converted : 89f
not a valid integer

## Live Example:

Here, you can test the live code example. You can execute the example for different values, even can edit and write your examples to test the Java code.