Class Census

java.lang.Object

org.episteme.social.sociology.Census

All Implemented Interfaces:

Serializable

public class Census
extends Object
implements Serializable

Represents a systematic collection of demographic data for a population of individuals. Provides analytical methods for population statistics like average age and gender distribution. * @version 1.1

Since:

1.0

Author:

Silvere Martin-Michiellot, Gemini AI (Google DeepMind)

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
Census(List<Person> population)	Creates a new Census for the given population.

Method Summary

Modifier and Type	Method	Description
double	getAverageAge()	Calculates the average age of the population.
Map<Gender,Long>	getGenderDistribution()	Returns the distribution of genders within the population.
int	getTotalPopulation()	Returns the total number of individuals in the census.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Census

public Census(List<Person> population)

Creates a new Census for the given population.

Parameters:

population - the list of people to analyze

Throws:

NullPointerException - if population is null

Method Details

getTotalPopulation

public int getTotalPopulation()

Returns the total number of individuals in the census.

Returns:

population size

getAverageAge

public double getAverageAge()

Calculates the average age of the population.

Returns:

average age in years, or 0.0 if population is empty

getGenderDistribution

public Map<Gender,Long> getGenderDistribution()

Returns the distribution of genders within the population.

Returns:

a map from gender to the count of individuals