person.java.txt

the teacher resource code about the secority

/*	The class that represents a Person object
 *	Person "live" in a Society
 *	
 *	Author: Dmitry Gakhovich
 *	E-mail: [e-mail]  or [e-mail]
 *	(C) 2004
 */

import java.util.ArrayList;

public class Person{
		
	String gender;			// Person's gender
	String name;			// Person's name
	int age;				// Person's age
	Person partner = null;	// husband or wife - reference to another Person object
	Person father = null;
	Person mother = null;
	ArrayList children = new ArrayList();	// Person may have more than one child - 
											// so we need a list
	Society society = null;	// After the Person is added to a Society (see Society class)
							// the "society" objects will not be null.
							// And all persons in the "society" will refer to the same
							// "society"
							// At the end of the day, we all live in the same society...

	public Person(){	// constructor
		this.name = "";
		// gender is selected randomly - 50/50
		if(Math.random()<=0.5)
			this.gender = "female";
		else
			this.gender = "male";	
		
		this.age = 0;		
	}
	public Person(String name, String gender, int age){// one more constructor
		this.name = name;
		this.gender = gender;
		this.age = age;
	}
	
	// bunch of get - set methods:
	public String getGender(){
		return gender;	
	}
	public int getAge(){
		return age;	
	}
	public void setAge(int age){
		this.age = age;	
	}
	public String getName(){
		return name;	
	}
	public void setName(String name){
		this.name = name;	
	}	
	public Person getPartner(){
		return partner;	
	}
	public void setPartner(Person partner){
		this.partner = partner;	
	}	
	public Person getFather(){
		return father;	
	}
	public Person getMother(){
		return mother;	
	}
	public void setFather(Person father){
		
		this.father = father;	
	}		
	public void setMother(Person mother){
		
		this.mother = mother;	
	}
	
	// married female Person may have a baby
	public Person getBaby(){	// method to get new baby :)
		if(age < 18 || partner == null || gender.equals("male"))
			return null;
		else{
			Person baby = new Person();	// new Person!
			baby.setMother(this);		// 
			baby.setFather(partner);	// the baby isn't only mom's baby!
			setChildren(baby);
			partner.setChildren(baby);
			return baby;
		}
	}
	public void setChildren(Person baby){
		children.add(baby);
	}
	public ArrayList getChildren(){
		return children;	
	}
	public void setSociety(Society society){
		this.society = society;
	}
	
	// a Person may fall in love with a Person of opposite sex
	// E.g., if the person is a male he may fall in love with any
	// adult female Person from the Society. The lucky lady
	// is chosen randomly. And vice versa.
	public Person fallInLove(){
		ArrayList choice;
		if(gender.equals("male")){
			choice = society.getAdultFemales();
		}
		else{
			choice = society.getAdultMales();			
		}
		int n = choice.size();//
		if(n>0){// can select only if size>0
			// generate random arrayList index:
			int option = (int)(Math.random()*n );
			return (Person)choice.get(option); 		//the current Person will love 
													// this "option" 
		}
		return null;	// may happen if there are no Persons of opposite gender...
	}
	
	// If somebody (another Person) falls in love, the current person may accept 
	// this feelings or not. Chances - 50/50. This is a life.... :( 
	public boolean acceptLove(){
		if(Math.random()<=0.5)
			return true;
		else
			return false;		
	}	
	
		
	public String toString(){//override toString() method for the object
		String s = "Name: " + getName() + "; Gender: " + getGender() + "; Age: " + getAge();
		return s;
	}
		
}// end Person