import java.util.ArrayList;
 
/**
 * Notebook is a class that the user can enter notes into and can later list all the notes in the notebook.
 *
*/
 
public class NoteBook
{
    // instance variables - replace the example below with your own
    private ArrayList noteBook;
    private int noteCount = 0;
 
    /**
     * Constructor for objects of class NoteBook
     */
    public NoteBook()
    {
        // initialise instance variables
        noteBook = new ArrayList ();
    }
    /**
     * Add a note to the notebook.
     * @param note the person to add
     */
    public void addPerson(Note newNote) 
	{
        noteBook.add(newNote);
    }
 
    
        
     
    /**
     * List all notes in the notebook with a number associate with each note.
     */
    public void listAll () 
    {
        for (int i = 0; i < noteBook.size(); i++)
        {
            Note  note = (Note)noteBook.get(i);
            System.out.println(noteBook);
        }
    }
}
 
/**
 * Note is a class that enable the user to input a note into the notebook.
 * 
 */  
public class Note
{
    // instance variables - replace the example below with your own
    private int noteCount = 0;
    private int numberOfNotes = 0;
    private String note;
 
    /**
     * Constructor for objects of class Note
     */
    public Note(String n)
    {
       note = n;
    }
   
    
   
    
    /**
     * Return the number of notes currently in the notebook.
     */
    public int numberOfNotes()
    {
       return numberOfNotes;
    }
      
}

private ArrayList noteBook;

private List noteBook = new ArrayList();

    public void listAll()
    {
        java.util.Iterator it = noteBook.iterator();
 
        while( it.hasNext() )
        {
            Note note = (Note)it.next();
            System.out.println(note);
        }
    }

    public void listAll()
    {
        java.util.Iterator it = noteBook.iterator();
 
        for( int i = 1; it.hasNext(); i++ )
        {
            Note note = (Note)it.next();
            System.out.println("Note number " + i + ": " + note);
        }
    }

import java.util.ArrayList;
import java.util.Iterator;
/**
 * Notebook is a class that the user can enter notes into and can later list all the notes in the notebook.
 *
 */
 
public class NoteBook
{
    // instance variables 
    private ArrayList noteBook;
    private int numberOfNotes = 0;
 
    /**
     * Constructor for objects of class NoteBook
     */
    public NoteBook()
    {
        // initialise instance variables
        noteBook = new ArrayList ();
    }
    /**
     * Insert a note to the notebook.
     * @param newNote the note to add
     */
    public void insertNote(Note newNote) 
    {
        noteBook.add(newNote);
    }
 
     /**
     * Remove the note with number 'noteNumber' from the notebook.
     * If there is no note with such a number, just return.
     */
    public void removeNote(int noteNumber)
    {    for( int i = 0; i < noteBook.size(); i++) 
            if(noteNumber < noteBook.size())
            {
            noteBook.remove(noteNumber);
            }
    } 
    
     
    /**
     * Return the number of notes currently in the notebook.
     */
    public int numberOfNotes()
    {
       
        for (int i = 0; i < noteBook.size(); i++)
        {
           numberOfNotes = noteBook.size() ;
        }
           
        return numberOfNotes;
    }
      
 
    /**
     * List all notes in the notebook with a number associate with each note.
     */
    
    public void listAll()    
    {        
        java.util.Iterator it = noteBook.iterator();        
        for( int i = 1; it.hasNext(); i++ )        
        {            
             Note note = (Note)it.next();           
             System.out.println( i + ". " + note);       
        }  
        
    }
    
    
}