WordFrequency.java

import java.util.*;

class WordFrequency{
    public static void main(String [] args){
        HashMap<Integer, Integer> recorder = new HashMap<>();

        System.out.println("Please enter word for the frequency recorder: ");

        while(!Console.endOfFile()){    //takes input until user is finished

            String userInput = Console.readToken();
            int wordLength = userInput.length();

            if ( recorder.containsKey(wordLength) ){    //checks if key is recorded
                int counter = recorder.get(wordLength);
                counter++;
                recorder.put(wordLength, counter );
            }

            else recorder.put(wordLength, 1);       //otherwise record key and set count to 1

            System.out.println("Please enter word for the frequency recorder: ");

        }

        // print out the word lengths and their frequency
        Set<Integer> keys = recorder.keySet();
        for(Integer wordLength : keys){
            System.out.println("Word Length: " + wordLength + " Frequency: " + recorder.get(wordLength));
        }
    }
}