The Double.sum()
method in Java is used to add two double
values together.
Table of Contents
- Introduction
sum()
Method Syntax- Examples
- Adding Two Positive Values
- Adding a Positive and a Negative Value
- Adding Special Values (Infinity and NaN)
- Real-World Use Case
- Conclusion
Introduction
The Double.sum()
method is a static method in the Double
class in Java. It adds two double
values together and returns their sum. This method is useful for performing arithmetic operations in a concise and readable manner.
sum()() Method Syntax
The syntax for the Double.sum()
method is as follows:
public static double sum(double a, double b)
- a: The first
double
value to be added. - b: The second
double
value to be added.
The method returns:
- The sum of the two
double
values.
Examples
Adding Two Positive Values
The sum()
method can be used to add two positive double
values.
Example
public class SumExample {
public static void main(String[] args) {
double a = 5.67;
double b = 8.34;
double result = Double.sum(a, b);
System.out.println("The sum of 5.67 and 8.34 is: " + result);
}
}
Output:
The sum of 5.67 and 8.34 is: 14.01
In this example, the method adds the values 5.67
and 8.34
, resulting in 14.01
.
Adding a Positive and a Negative Value
The sum()
method can also be used to add a positive double
value and a negative double
value.
Example
public class SumPositiveNegativeExample {
public static void main(String[] args) {
double a = 10.5;
double b = -3.2;
double result = Double.sum(a, b);
System.out.println("The sum of 10.5 and -3.2 is: " + result);
}
}
Output:
The sum of 10.5 and -3.2 is: 7.3
In this example, the method adds the values 10.5
and -3.2
, resulting in 7.3
.
Adding Special Values (Infinity and NaN)
The sum()
method handles special values such as positive infinity, negative infinity, and NaN (Not-a-Number).
Example
public class SpecialValuesExample {
public static void main(String[] args) {
double a = Double.POSITIVE_INFINITY;
double b = 10.0;
double c = Double.NaN;
System.out.println("The sum of POSITIVE_INFINITY and 10.0 is: " + Double.sum(a, b));
System.out.println("The sum of NaN and 10.0 is: " + Double.sum(c, b));
}
}
Output:
The sum of POSITIVE_INFINITY and 10.0 is: Infinity
The sum of NaN and 10.0 is: NaN
In this example, the method correctly handles the special values POSITIVE_INFINITY
and NaN
.
Real-World Use Case
Summing Values in an Array
In a real-world application, you might need to sum the values in an array of double
values.
Example
public class ArraySumExample {
public static void main(String[] args) {
double[] values = {1.1, 2.2, 3.3, 4.4, 5.5};
double sum = 0;
for (double value : values) {
sum = Double.sum(sum, value);
}
System.out.println("The sum of the array values is: " + sum);
}
}
Output:
The sum of the array values is: 16.5
In this example, the code iterates through an array of double
values and sums them using the Double.sum()
method.
Conclusion
The Double.sum()
method in Java is a simple and effective way to add two double
values together. By understanding how to use this method, you can efficiently handle tasks that involve arithmetic operations on double
values in your Java applications. Whether you are adding positive values, handling special cases, or summing values in an array, the sum()
method provides a reliable solution for these tasks.