import java.util.ArrayList;

public class WordList

{

    private ArrayList<String> myList;

    public WordList()

    {

    }// end of default constructor

    public WordList( ArrayList<String> a )

    {

        myList = new ArrayList<String>( a );

    }// end of default constructor

    public int numWordsOfLength( int len )

    {

        int temp = 0;

        for( String s : myList )

        {

            if( s.length() == len )

                temp++;

        }// check each String in the list

        return temp;

    }// end of numWordsOfLength

    public void removeWordsOfLength( int len )

    {

        for(int i = 0; i < myList.size(); i++)

        {

            String s = myList.get( i );

            if( s.length() == len )

            {

                myList.remove( i );

                i--;

            }// remove the word if it is the correct size

        }// end of removing all the words

    }// end of removeWordsOfLength

    public String toString()

    {

        //use a for each loop to create the master String

        String master = new String();

        for( String s : myList )

            master += ( s + " " );

        return master;

    }// end of toString

//     public void add(String a)

//     {

//         myList.add(a);

//     }// end of add (an animal)

//      note used because of constructor

}// end of class WordList

********************************************************************************

import java.util.ArrayList;

public class WordListDriver

{

    public static void main(String[] arg)

    {

        // 0. create a source of data for the WordList object

        ArrayList<String> temp = new ArrayList<String>();

        temp.add( new String( "cat" ) );

        temp.add( new String( "mouse" ) );

        temp.add( new String( "frog" ) );

        temp.add( new String( "dog" ) );

        temp.add( new String( "dog" ) );

        System.out.println( "temp array is: " + temp );

        // 1. create a WordList object

        WordList animals = new WordList( temp );

        // 2. populate the WordList object

        // there are two ways

        //   A. constructor - better, see above

        //   B. create and add method

        //       animals.add("asdasd");  // this is B.

        // 3. print the WordList object

        System.out.println( animals );// the toString() is not necessary though you could put it in

        // 4. call the new methods

        System.out.println( "how many have a length of 2: " + animals.numWordsOfLength( 2 ) );

        System.out.println( "how many have a length of 2: " + animals.numWordsOfLength( 3 ) );

        System.out.println( "how many have a length of 2: " + animals.numWordsOfLength( 4 ) );

        System.out.println( "how many have a length of 2: " + animals.numWordsOfLength( 5 ) );

        System.out.println( "how many have a length of 2: " + animals.numWordsOfLength( 6 ) );

        System.out.println( animals );

        animals.removeWordsOfLength( 4 );

        System.out.println( animals );

        animals.removeWordsOfLength( 3 );

        System.out.println( animals );

        animals.removeWordsOfLength( 2 );

        System.out.println( animals );

        // 5. print the WordList object to verify methods worked

    }// end of main

}// end of WordListDriver

*****************************************************************************************************************