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(a) Create a class named LivestockProject with fields that hold a membership number, the
name of the member, surname, date of birth, gender, location and initial number of livestock
(cattle) turned in. Include a constructor that initializes each field to appropriate default
values. Also include methods to set and get each of the fields.

(b) Create a livestock production estimation method(s) that will calculate and predict livestock
production over a certain period of time (1 year, 2 years, 5 years, etc.), considering the
following factors:
• The percentage of cows in heat in a 21-day period = 90%
• The percentage of the heats that are fertile = 90%
• The percentage of the cows that are serviced by the bull = 95%
• The 2 bulls per 100 cows ratio for a period of 5 years
• The percentage of calves born in the herd will be bull = 30%
• The gestation length of a bull valves = 287 days
• The gestation length of a heifer valves = 279 days
• The number of days a cow should undergo involution = 50 days
• The number of births a cow can give in its lifetime = 8
• The age that a heifer requires to reach puberty and be bred = 14 months

(c) Create a class named PredictProduction whose main() method instantiate an object of the
class LivestockProject. Within the method, prompt a user for registration, indicating the
name, surname, date of birth, gender, location and initial number of livestock (cattle) to turn
in. When a certain number of members have been successfully registered, your application
must print the following:
• The Database of registered members on the application
• Estimated livestock production per member over a certain period of time
• Estimated livestock production for the entire project over a certain period of time
• Estimated livestock production of bulls and heifers per member over a certain
period of time
• Estimated livestock production of bulls and heifers for the entire project over a
certain period of time

What I have tried:

Java
import java.util.Scanner;

public class Production {

   int birth_cow;
   int cow_involution ;
   int years,days;
   int no_of_cows;
   double cow_heat;
   double heat_Fertile;
   double cow_served_bulls;
   private String cow_served_bull;
           
public Production(int days, int years, int no_of_cows, double cow_heat, double heat_Fertile, double cow_served_bulls){
    this.days=days;
    this.no_of_cows = no_of_cows;
    this.years = years;
    this.cow_heat = cow_heat;
    this.heat_Fertile=heat_Fertile;
    this.cow_served_bulls=cow_served_bulls;
}


public void cows_Heat(int no_cows){
    cow_heat= no_cows* 0.9 ;
    System.out.println("there are " + cow_heat +"\t  cows in heat ");
}

public void Heats_Fertile(){
    heat_Fertile = 0.9 * cow_heat  ;
    System.out.println(heat_Fertile);
}

public void served(){
   cow_served_bulls=0.95 * heat_Fertile;
   double bull= 0.3 * cow_served_bulls;
   System.out.println("The percentage of of the cows that are serviced by the bull:"+cow_served_bull ) ;
   System.out.println(bull +"there will be  : " +"\t bulls");
}

public void gestation(int days){
  if (days==287)
    System.out.println(" it's a Bull");
  else if (days ==279)
    System.out.println("it's a heifer");
}

public static void main(String[] args) {
      Scanner input=new Scanner(System.in);

      int days =0;
      int  bull= 0;

      Production Production =new Production(00,00,00,0.0,0.0,0.0);

      Production.cows_Heat(100);
      Production.Heats_Fertile();
      Production.served();
      Production.gestation(287);
   }
}
Posted
Updated 26-May-21 19:28pm
v2
Comments
Richard MacCutchan 27-May-21 3:34am
   
Do you have a question?

1 solution

You are on the right track for your task but you must work out all details.
Learn to use the debugger to find the problems and implement all subtasks.

tips:
- take the time to visit some Java tutorial to learn the basics from a pro
- seperate items in classes and tasks in functions (and also in own files)
- make a lot of print at first (and remove when done)
- search the internet for tips

It is your homework, so we wont do your job.
   

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