## Syntax:

public static double sum(double a,double b)

## Java Code Example :

This java example source code demonstrates the use of sum(double a,double b) method of Double class.

Some takeaways on this method:

• Adds two double values together as per the + operator.
• since JDK 1.8
```package com.javatutorialhq.java.examples;

import static java.lang.System.out;

/*
* This example source code demonstrates the use of
* sum(double a,double b) method of Double class
*/

public class DoubleSum {

public static void main(String[] args) {

Double val1 = 5.95;
Double val2 = 0.0 / 0.0;
Double val3 = 9.0 / 0;
Double val4 = -val1 / 0.0;
Double val5 = -9.25;
Double val6 = 0.0;

/*
* test all the possible scenario on using the
* sum(double a,double b) method
* Note, this only works using java 8
*/

out.println("Sum of "+val1+" and "+val2+ " = "
+ Double.sum(val1, val2));
out.println("Sum of "+val1+" and "+val3+ " = "
+ Double.sum(val1, val3));
out.println("Sum of "+val3+" and "+val4+ " = "
+ Double.sum(val3, val4));
out.println("Sum of "+val1+" and "+val5+ " = "
+ Double.sum(val1, val5));
out.println("Sum of "+val2+" and "+val6+ " = "
+ Double.sum(val2, val6));

}
}
```

## Sample Output :

Running the above example source code will give the following output

```Sum of 5.95 and NaN = NaN
Sum of 5.95 and Infinity = Infinity
Sum of Infinity and -Infinity = NaN
Sum of 5.95 and -9.25 = -3.3
Sum of NaN and 0.0 = NaN
```