Question

Using the diagram below and the starter code, write Document Processor that will read a file and let the user determine how many words of a certain length there are and get a count of all of the word lengths in the file. Your program should do the following: The constructor should accept the filename to read (word.txt) and then fill the words ArrayList up with the words from the file. The countWords method should accept an integer that represents the number of letters in a word. It should then return a count of the number of words in the words ArrayList that have that number of letters. The showFrequencies() method should return a string that counter that shows the counts for all lengths. See output below: 1:2 2:26 3:101 4:239 5:188 6:157 7:126 8:78 9:41 10:24 11:10 12:4 13:2 14:2 There is no need to create getters/setters for input and words.

import java.util.*;
import java.io.*;

public class DocumentProcessor {

   private Scanner input;
   private ArrayList<String> words;
  
   public DocumentProcessor(String fileName) throws IOException {
      
      
   }//end constructor
  
   public int countWords(int length) {
      
       return 0;
   }//end   
  
   private int getMaxLength() {
      
       return 0;
   }
  
   public String showFrequencies() {
          
   return "";
   }
  
}//end class