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# Java Double sum() Method

Java `sum()` method is a part of the `Double` class of the `java.lang` package. This method returns the numerical sum of the double values passed as arguments (i.e simply adds the two numbers passed as argument in accordance with the + operator).

### Syntax:

``public static double sum(double a, double b)  ``

### Parameters:

The parameters passed includes the two double values whose addition is to be returned.

### Returns:

Returns the sum of the two double values passed as parameters.

## Example 1:

Here, some positive and negative numbers are taken for a better understanding of the method.

``````import java.lang.Double;
public class StudyTonight
{
public static void main(String[] args)
{
double a = 10.84;
double b = 29.132;
double c = -67.99;
System.out.println("The sum of a and b is = " + Double.sum(a, b));  // It will return the sum of a and b
System.out.println("The sum of a and b is = " + Double.sum(b, c));  // It will return the sum of a and b
}
}``````

The sum of a and b is = 39.972
The sum of a and b is = -38.85799999999999

## Example 2:

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

``````import java.util.Scanner;
public class StudyTonight
{
public static void main(String[] args)
{
try
{
System.out.println("Enter the two values : ");
Scanner sc = new Scanner(System.in);
double a = sc.nextDouble();
double b = sc.nextDouble();
System.out.println("sum is = " + Double.sum(a, b));  // will return the sum of a and b.
}
catch(Exception e)
{
System.out.println("Invalid Input");
}
}
} ``````

Enter the two values :
89.66 95.88
sum is = 185.54
***************************
Enter the two values :
-66.009 -443.99
sum is = -509.999
**************************
Enter the two values :
0x667 0x554
Invalid Input

## 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.