Product of Doubles with Varargs in Java

Create a Java program using a method with varargs to calculate the product of doubles

The DoubleProductCalculator class has a static method named calculateProduct that takes a variable number of double parameters (numbers).
Inside the method, the given numbers are printed using Arrays.toString(numbers) to display them as a string.
If no numbers are provided (i.e., the length of the numbers array is 0), an IllegalArgumentException is thrown.
The method initializes a variable product to 1 and then iterates through each number in the numbers array, multiplying each number with the current product.
Finally, the computed product is returned.
In the main method, the calculateProduct method is called with three double numbers (2.5, 1.5, and 3.0), and the result is printed to the console.

Source Code

import java.util.Arrays;
public class DoubleProductCalculator
{
	static double calculateProduct(double... numbers)
	{	
		System.out.println("Given Numbers : " + Arrays.toString(numbers));
		if (numbers.length == 0)
		{
			throw new IllegalArgumentException("No numbers provided");
		}
		double product = 1;
		for (double num : numbers)
		{
			product *= num;
		}
		return product;
	}
 
	public static void main(String[] args)
	{
		double product = calculateProduct(2.5, 1.5, 3.0);
		System.out.println("Product : " + product);
	}
}

Output

Given Numbers : [2.5, 1.5, 3.0]
Product : 11.25

Product of Doubles with Varargs in Java

Source Code

Output

Example Programs

Method with Varargs Programs in Java