Question

Create a Cow class. Make two cows and put them in a collection. Write a method to count the cows from the collection that have exactly four legs.

using Java

Answer 1

Dear Student,

Please find the requested code below:

SOURCE CODE:

import java.util.*;
//importing the java.util.* package

//creating the class Cow
class Cow
{
    int NoOfLegs=0;
}

class TMP
{

//creating the method count to count the no. of cows having four legs
    int count(ArrayList x )
{int cnt=0;
    for(int i=0;i<x.size();i++)
    {
      
        if((x.get(i).NoOfLegs)==4)
        {cnt+=1;}

    }
    return cnt;
  

  
}  
  
}

//main class to test the code
public class Main extends Cow
{

//main method
public static void main(String[] args)
{
  
    //creating the ArrayList collection
ArrayList list = new ArrayList();

//creating the objects of Cow i.e say 3 cows
Cow c1=new Cow();
Cow c2=new Cow();
c1.NoOfLegs=4;
c1.NoOfLegs=6;


//adding into the ArrayList collection
list.add(c1);
list.add(c2);

//printing the collection to check whether inserted or not
System.out.println(list);
TMP xx=new TMP();

//storing the count value in FourLegsCows
int FourLegsCows=xx.count(list);

//and printing the count value

System.out.println("no. of cows having four legs="+FourLegsCows);
}}

OUTPUT:

[Cow@2a139a55, Cow@15db9742]

no. of cows having four legs=1

THANK YOU