The Class BagOfStrings So Far

/**
   A class that partially implements a bag of strings by using an array.
   @author Frank M. Carrano
*/
public class BagOfStrings
{
   private static final int DEFAULT_CAPACITY = 25; 
   private String[] bag;
   private int numberOfStrings;
   /** Creates an empty bag whose capacity is 25. */
   public BagOfStrings() 
   {
      this(DEFAULT_CAPACITY);
   } // End default constructor
   /** Creates an empty bag having a given capacity.
	    @param capacity  The integer capacity desired. */
   public BagOfStrings(int capacity) 
   {
      bag = new String[capacity];
      numberOfStrings = 0;
   } // End constructor
   /** Adds a new string to this bag.
       @param newString  The string to be added.
       @return true if the addition is successful, or false if not. */
   public boolean add(String newString) 
   {
      boolean result = true;
      if (isFull())
      {
         result = false;
      }
      else
      {  // Assertion: result is true here
         bag[numberOfStrings] = newString;
         numberOfStrings++;
      } // End if
		
      return result;
   } // End add
   
   /** Retrieves all strings that are in this bag.
       @return a newly allocated array of all the strings in this bag. */
   public String[] toArray()
   {
	  String[] result = new String[numberOfStrings];
	  for (int index = 0; index < numberOfStrings; index++) 
	  {
	     result[index] = bag[index];
	  } // End for
			
	  return result;
	  // Note: The body of this method could consist of one return statement,
	  // if you call Arrays.copyOf
   } // End toArray
   /** Sees whether this bag is full.
       @return true if this bag is full, or false if not */
   public boolean isFull() 
   {
      return numberOfStrings == bag.length;
   } // End isFull
} // End BagOfStrings