PopulationProjection.java

/*
Rahim Siddiq
Apr 13 2023
Population Projection
*/

public class PopulationProjection
{
	public static void main(String[] args)
	{
		// Variables for current population and number of seconds in a year
		int currentPopulation = 312032486;
		// Variables and calculations for births, deaths, and immigration. Data derived from Census
		int secondsPerYear = 365 * 24 * 60 * 60;
		double births = secondsPerYear / 7.0;
		double deaths = secondsPerYear / 13.0;
		double immigrants = secondsPerYear / 45.0;
			    
		// Title of program and description of program function to user
		System.out.println();
		System.out.println(" ================================================================");
		System.out.println(" ===================== POPULATION PROJECTION ====================");
		System.out.println(" ================================================================");
		System.out.println(" Program uses the U.S. Census Bureau's formula to display");
		System.out.println(" population projections over 5 years starting from 312,032,486");
		System.out.println(" ----------------------------------------------------------------");
		System.out.println();
		
	    // Loop to perform projections over each of the next 5 years and output data to user
		for (int year = 1; year <= 5; year++) 
		{
		    currentPopulation += births - deaths + immigrants;
		    System.out.println(" Year " + year + " population: " + currentPopulation);
		}
	}
}