Refactor Complete

src/main/java/com/zipcodewilmington/danny_do_better_exercises/PredicateUtilities.java

 package com.zipcodewilmington.danny_do_better_exercises;
 
 /**
- * Created by dan on 6/14/17.
+ * Simplified
  */
 public class PredicateUtilities {
 
     public Boolean isGreaterThan(int x, int y) {
-
-        if (x > y) {
-            return true;
-        }
-        else {
-            return false;
-        }
+        return x > y;
     }
 
     public Boolean isLessThan(int x, int y) {
-        if (x < y) {
-            return true;
-        }
-        else {
-            return false;
-        }
+        return x < y;
     }
 
     public Boolean isGreaterThanOrEqualTo(int x, int y) {
-        if (x >= y) {
-            return true;
-        }
-        else {
-            return false;
-        }
+        return x >= y;
     }
 
     public Boolean isLessThanOrEqualTo(int x, int y) {
-        if (x <= y) {
-            return true;
-        }
-        else {
-            return false;
-        }
+        return x <= y;
     }
-}
+}

src/main/java/com/zipcodewilmington/danny_do_better_exercises/StringUtilities.java

 package com.zipcodewilmington.danny_do_better_exercises;
 
 /**
- * Created by dan on 6/14/17.
+ * Refactored
  */
 public class StringUtilities {
 
     public static String getHelloWorld() {
-
         return "Hello World";
     }
 
     public static String concatenation(String firstSegment, String secondSegment){
-
         return firstSegment + secondSegment;
     }
 
     public static String concatenation(int firstSegment, String secondSegment){
-
         return firstSegment + secondSegment;
     }
 
     public static String getPrefix(String input){
-
-        return input.substring(0,3);
+        return input.substring(0,3); //returns a range of characters from the string from index positions 0 - 3 (prefix)
     }
 
     public static String getSuffix(String input){
-
         return input.substring(2);
     }
 
     public static Boolean compareTwoStrings(String inputValue, String comparableValue){
-
         return inputValue.equals(comparableValue) ;
     }
 
         if (middleIndex % 2 == 0){
             middleIndex = middleIndex - 1;
         }
-        char middleCharacter = inputValue.charAt(middleIndex);
-        return middleCharacter;
+
+        return inputValue.charAt(middleIndex);
     }
 
     public static String getFirstWord(String spaceDelimitedString) {
     }
 
     public static String reverseTheTwo(String stringToReverse){
-
-        String reverse = new StringBuffer(stringToReverse).reverse().toString();
-
-        return reverse;
+        return new StringBuffer(stringToReverse).reverse().toString();
     }
-}
+}

src/main/java/com/zipcodewilmington/danny_do_better_exercises/ZipcodeRocks.java

 package com.zipcodewilmington.danny_do_better_exercises;
 
 /**
- * Created by leon on 2/5/18.
+ * Refactored
  */
 public class ZipcodeRocks {
     public static void main(String[] args) {
-
         System.out.println("Zipcode Rocks!");
     }
-}
+}