Write a method called wordLengths that accepts a string for

Write a method called wordLengths that accepts a string for the name of a file as a parameter. Your method should open the given file, count the number of letters in every token in the file, and then output a result diagram of how many words contain each number of letters. For example consider a file containing the following text. Four score and seven years ago This is a different line some Numbers 1 12 13 14 More Data Your method should produce the following output to the console: 1: ** 2: **** 3: ** 4. ****** 5. *** 6: 0 7: * 8: 0 9: * 10: 0 You can create your own sample text files, for testing purposes, but make sure they work correctly. You may assume that no token will have more than 20 characters.

Solution

WordLengthTest.java

import java.io.File;
import java.io.FileNotFoundException;
import java.util.HashMap;
import java.util.Scanner;

public class WordLengthTest {

  
   public static void main(String[] args) throws FileNotFoundException {
       Scanner scan = new Scanner(System.in);
       System.out.println(\"Enter the file name: \");
       String fileName = scan.next();
       wordLengths(fileName);

   }
   public static void wordLengths(String fileName) throws FileNotFoundException{
       Scanner scan = new Scanner(new File(fileName));
       HashMap<Integer, Integer> map = new HashMap<Integer, Integer>();
       String word;
       int max = 0;
       while(scan.hasNext()){
           word = scan.next();
           System.out.println(word);
           if(max < word.length()){
               max = word.length();
           }
           if(map.containsKey(word.length())){
               map.put(word.length(), map.get(word.length())+1);
           }
           else{
               map.put(word.length(), 1);
           }
       }
       for(int i=1; i<=max; i++){
           System.out.print(i+\": \");
           if(map.get(i)!=null){
           for(int j=0; j<map.get(i); j++){
           System.out.print(\"*\");
           }
          
       }
           else{
               System.out.print(\"0\");
           }
           System.out.println();
       }
   }

}

Output:

Enter the file name:
D:\\\\input.txt
This
is
a
different
lin
some
Numbers
1
12
13
14
More
Data
1: **
2: ****
3: *
4: ****
5: 0
6: 0
7: *
8: 0
9: *

input.txt

This is a different lin
some Numbers 1 12 13 14
More Data