Java program to calculate distance light travels

In this article, we will demonstrate how to calculate the distance light travels in one year using Java. We will use the Demo class and the main method to perform this calculation.

Speed of light: 186000
Days = 365

    
	
	




    
  
dist = speed * seconds

Problem Statement

Write a Java program to calculate the total distance that light travels in a year, given that the speed of light is 186,000 miles per second.

Output

Light travels: 5865696000000 miles

Steps to calculate distance light travels

Following are the steps to calculate the distance light travels ?

• Initialize the Demo class.
• Define the speed of light in miles per second in the main() method.
• Calculate the total number of seconds in a year.
• Multiply the speed of light by the total time in seconds to find the distance.
• Print the distance.

Java program to calculate distance light travels

The following is the complete example to calculate the distance light travels ?

public class Demo {
   public static void main(String[] args) {
      int speed;
      long days, seconds, dist;
      speed = 186000;
      days = 365;
      seconds = days * 24 * 60 * 60;
      dist = speed * seconds;
      System.out.print("Light travels: "+dist + " miles");
   }
}

Output

Light travels: 5865696000000 miles

Code Explanation

To calculate the distance light travels, we need to follow the basic formulae to calculate distance.

Distance = Speed x Time

Here, the following are the parameters ?

speed = 186000;
days = 365;
seconds = days * 24 * 60 * 60;

Above, we calculated the time in seconds for a year ?

days = 365;
seconds = days * 24 * 60 * 60;

In this program, we use the Demo class as the main method to calculate the distance light travels. First, we define the speed of light as 186,000 miles per second. We then calculate the total number of seconds in a year. Finally, we multiply the speed of light by the total seconds to get the distance light travels in a year, which is printed using the System.out.print() method.