making all the words lowercase

Sorting/RandomWordFileReader.java

@@ -14,7 +14,7 @@ public class RandomWordFileReader {
     public RandomWordFileReader(String filename){
         try(BufferedReader reader = Files.newBufferedReader(Path.of(filename));){
             //This should use flatMap to make a string array from the line, and then turn the elements of that array into a stream, which goes to forEach
-            reader.lines().flatMap(line -> Arrays.stream(line.split("\\s+"))).forEach(word -> words.add(word));
+            reader.lines().flatMap(line -> Arrays.stream(line.split("\\s+"))).forEach(word -> words.add(word.toLowerCase()));
         }catch (IOException ex){
             System.err.println(ex);
         }