Question

The following code is included for the java programming problem:

public class Bunny {

       private int bunnyNum;

       public Bunny(int i) {

              bunnyNum = i;

       }

       public void hop() {

              System.out.println("Bunny " + bunnyNum + " hops");

       }

}

• Create an ArrayList <????> with Bunny as the generic type.
• Use an index for-loop to build (use .add(….) ) the Bunny ArrayList. From the output below, you need to have 5.
• Use an index for-loop to call each of the Bunny hop( ). You need to use .get(i) to call the hop( ) of each Bunny.
• Write an enhanced for-loop to display the Bunny hops. You don’t need to use the .get(i) call.
• Create an Iterator<Bunny> reference variable, and use it to iterate through the Bunny ArrayList with the .hasNext() and .next() to get to the hop().

Display the following output:

+++++++++++ hop in for-loop

Bunny 0 hops

Bunny 1 hops

Bunny 2 hops

Bunny 3 hops

Bunny 4 hops

----------- hop in Enhanced-loop

Bunny 0 hops

Bunny 1 hops

Bunny 2 hops

Bunny 3 hops

Bunny 4 hops

*********** hop in Iterator style

Bunny 0 hops

Bunny 1 hops

Bunny 2 hops

Bunny 3 hops

Bunny 4 hops

Answer 1

I have implemented the program to iterate the ArrayList using for,enhanced-for and iterator  per the given description.

Please find the following Code Screenshot, Output, and Code.

ANY CLARIFICATIONS REQUIRED LEAVE A COMMENT

1.CODE SCREENSHOT :

2.OUTPUT :

3.CODE :

Main.java

import java.util.*;
public class Main{
        public static void main(String args[]){
                //create a array list to store "Bunny" Class object
                ArrayList<Bunny> a=new ArrayList<Bunny>();
                int i;
                //use for loop to store 5 obejcts 
                for(i=0;i<5;i++)
                        a.add(new Bunny(i));
                //use for loop to iterate
                System.out.println("+++++++++++ hop in for-loop");
                for(i=0;i<5;i++)
                        a.get(i).hop();
                //use enhanced for loop to iterate
                System.out.println("----------- hop in Enhanced-loop");
                for (Bunny b:a)
                        b.hop();
                //create a iterator
                 Iterator<Bunny> itr=a.iterator();
                 System.out.println("*********** hop in Iterator style");
                 //iterate using iterator
                while(itr.hasNext())
                        itr.next().hop();
        }
}

Bunny.java

public class Bunny {

       private int bunnyNum;

       public Bunny(int i) {

              bunnyNum = i;

       }

       public void hop() {

              System.out.println("Bunny " + bunnyNum + " hops");

       }

}