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Human.java
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Human.java
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package Helper;
import java.util.Random;
import java.util.*;
import java.util.concurrent.ExecutorService; //For harnessing thread pool facility
import java.util.concurrent.Executors;
//Basic Structure of a humann
public class Human extends Thread
{
Node head;
public static long count = 0;
public static long dead = 0;
long pan;
boolean sex; //True is Male & False is Female
int age;
Human father;
Human mother;
Human nextSibling;
Human spouse;
static class Node {
Human box;
Node next;
Node(Human d) { box = d; next=null; } // Constructor
}
public Human(int age)
{
this.father = null;
this.mother = null;
this.nextSibling = null;
this.spouse = null;
this.sex = maleOrFemale();
this.pan = ++count;
System.out.println("Creating Human with age " + age);
this.age = age;
}
public static LinkedList<Human> marriageList = new LinkedList<Human>();
public void run()
{
// Displaying the thread that is running
if(sex) //If Male
{
System.out.println ("Man " + Thread.currentThread().getId() + " is alive");
//Sleep till 2
//Only if human has that much to live. Otherwise die.
if(this.age > 2)
{
try{Thread.sleep(2);} catch(InterruptedException e) {System.out.println("Thread sleep error");}
//Eligible for marriage after 2
marriageList.add(this); //This Human is added in marriage queue
{
System.out.println(marriageList.size());
}
//Find a suitable match & marrying
this.match();
//Mating between spouses happenning
this.mate();
//Sleep for rest of time
try{Thread.sleep(this.age - 2);} catch(InterruptedException e) {System.out.println("Thread sleep error");}
}
else
{
try{Thread.sleep(this.age);} catch(InterruptedException e) {System.out.println("Thread sleep error");}
}
dead++;
System.out.println("Man " + Thread.currentThread().getId() + " is dead. RIP");
}
else //If Female
{
System.out.println ("Woman " + Thread.currentThread().getId() + " is alive");
//Sleep till 2
//Only if human has that much to live. Otherwise die.
if(this.age > 2)
{
try{Thread.sleep(2);} catch(InterruptedException e) {System.out.println("Thread sleep error");}
//Eligible for marriage after 2
marriageList.add(this); //This Human is added in marriage queue
System.out.println(marriageList.size());
//Find a suitable match & marrying
this.match();
//Mating between spouses happenning
this.mate();
//Sleep for rest of time
try{Thread.sleep(this.age - 2);} catch(InterruptedException e) {System.out.println("Thread sleep error");}
}
else
{
try{Thread.sleep(this.age);} catch(InterruptedException e) {System.out.println("Thread sleep error");}
}
dead++;
System.out.println("Woman " + Thread.currentThread().getId() + " is dead. RIP");
}
}
//Detemining sex randomly
public boolean maleOrFemale ()
{
Random rand = new Random();
int randNumber = rand.nextInt(1000);
if(randNumber % 2 == 0)
{
return true;
}
else
{
return false;
}
}
//Finding a Match & Marriage
public void match()
{
boolean interestedIn; //Making humans mate with opposite sex only
interestedIn = (this.sex)?false:true;
Iterator<Human> itr=marriageList.iterator();
while(itr.hasNext())
{
Human temp = itr.next();
if(temp.sex == interestedIn) //If match is of opposite sex
{
//Marrying the match
System.out.println("Match found for " + Thread.currentThread().getId());
this.spouse = temp;
temp.spouse = this.spouse;
break;
}
}
}
//Mating
public void mate()
{
if(this.spouse != null) //Checking whether spouse is present
{
Random rand = new Random();
int randNumber = rand.nextInt(10); //Randomly deciding number of children they will have
Human fath = null;
Human moth = null;
//Assigning father & mother to the child born
if(this.sex == true)
{
fath = this;
moth = this.spouse;
}
if(this.sex == false)
{
moth = this;
fath = this.spouse;
}
Human elderSibling = new Human(rand.nextInt(8));
//Children taking birth
for(int j = 0; j < randNumber - 1; j++)
{
Human child = new Human(rand.nextInt(8));
ExecutorService service2 = Executors.newFixedThreadPool(8);
child.father = fath;
child.mother = moth;
elderSibling.nextSibling = child;
//Now child knows who is his/her father, mother & sibling
//starting the child thread
//child.start();
service2.execute(child);
elderSibling = child;
service2.shutdown();
while (!service2.isTerminated()) {}
}
}
}
}