Finished all the methods so that the test cases pass

LoopFun.java

@@ -1,40 +1,58 @@
 public class LoopFun
 {
 
-      /**
-       * Given a number, return the factorial of that number.
-       * For example, given 5, the factorial is 5 x 4 x 3 x 2 x 1 which should return 120.
-       * @param number
-       * @return the factorial of the number
-       */
-      public int factorial(int number){
-          return -1;
-      }
+    /**
+     * Given a number, return the factorial of that number.
+     * For example, given 5, the factorial is 5 x 4 x 3 x 2 x 1 which should return 120.
+     * @param number
+     * @return the factorial of the number
+     */
+    public int factorial(int number){
+        
+        if(number == 1){
+            return number;
+        }
+        number *= factorial(number-1);
+        return number;
+    }
 
-      /**
-       * Given a phrase, get the acronym of that phrase. Acronym is the combination of
-       * the first character of each word in upper case.
-       * For example, given "Ruby on Rails", this method will return "ROR"
-       * @param phrase
-       * @return Upper case string of the first letter of each word
-       */
-      public String acronym(String phrase) {
-          return null;
-      }
+    /**
+     * Given a phrase, get the acronym of that phrase. Acronym is the combination of
+     * the first character of each word in upper case.
+     * For example, given "Ruby on Rails", this method will return "ROR"
+     * @param phrase
+     * @return Upper case string of the first letter of each word
+     */
+    public String acronym(String phrase) {
+       String[] arr = phrase.split(" ");
+       String acronym = "";
+       for(int i = 0; i < arr.length; i++){
+          acronym += arr[i].toUpperCase().charAt(0);
+        
+        }
+        return acronym;
+    }
 
-      /**
-       * To prevent anyone from reading our messages, we can encrypt it so it will only be readable by its
-       * intended audience. This method encrypt the message by shifting the letter by 3 characters. If the character is
-       * at the end of the alphabet, it will wraps around.
-       * For example:
-       *  'a' => 'd'
-       *  'w' => 'z'
-       *  'x' => 'a'
-       *  'y' => 'b'
-       * @param word
-       * @return the encrypted string by shifting each character by three character
-       */
-      public String encrypt(String word) {
-          return null;
-      }
+    /**
+     * To prevent anyone from reading our messages, we can encrypt it so it will only be readable by its
+     * intended audience. This method encrypt the message by shifting the letter by 3 characters. If the character is
+     * at the end of the alphabet, it will wraps around.
+     * For example:
+     *  'a' => 'd'
+     *  'w' => 'z'
+     *  'x' => 'a'
+     *  'y' => 'b'
+     * @param word
+     * @return the encrypted string by shifting each character by three character
+     */
+    public String encrypt(String word) {
+        String[] encrypted = word.split("");
+        char start = 'a';
+        //start = (char) (((start-'a'+3) %26) + 'a');
+        String fin = "";
+        for(int i = 0; i < encrypted.length; i++){
+            fin += String.valueOf((char) (((encrypted[i].charAt(0)-'a'+3) %26) + 'a'));
+        }
+        return fin;
+    }
 }

MathUtilities.java

@@ -6,7 +6,7 @@ public class MathUtilities{
    * @return the sum of the two numbers
    */
   public int add(int num1, int num2){
-      return -1;
+      return num1 + num2;
   }
 
   /**
@@ -16,7 +16,7 @@ public class MathUtilities{
    * @return the sum of the two numbers
    */
   public double add(double num1, double num2){
-      return -1;
+      return num1 + num2;
   }
 
   /**
@@ -25,7 +25,7 @@ public class MathUtilities{
    * @return the half of the number in double
    */
   public double half(int number) {
-      return -1;
+      return (double)number/2;
   }
 
   /**
@@ -34,7 +34,9 @@ public class MathUtilities{
    * @return true if the number is odd, false if it is even
    */
   public boolean isOdd(int number){
-      return false;
+      if(number%2 != 0){
+          return true;
+        }else{return false;}
   }
 
 
@@ -44,7 +46,7 @@ public class MathUtilities{
    * @return the result of the number multiply by itself
    */
   public int square(int number) {
-      return -1;
+      return number*=number;
   }
 
 }

StringUtilities.java

@@ -1,13 +1,14 @@
 public class StringUtilities {
-   public Character getMiddleCharacter(String word){
-       return null;
+   public Character getMiddleCharacter(String word){       
+       return word.charAt(word.length()/2);
    }
    
    public String removeCharacter(String value, char charToRemove){
-     return null;  
+     return value.replace(String.valueOf(charToRemove),"");
    }
    
    public String getLastWord(String value) {
-       return null;
+       String[] arr = value.split(" ");
+       return arr[arr.length-1];
    }
 }

package.bluej

@@ -2,26 +2,26 @@
 dependency1.from=StringUtilitiesTest
 dependency1.to=StringUtilities
 dependency1.type=UsesDependency
-dependency2.from=BonusTest
-dependency2.to=Bonus
+dependency2.from=LoopFunTest
+dependency2.to=LoopFun
 dependency2.type=UsesDependency
 dependency3.from=MathUtilitiesTest
 dependency3.to=MathUtilities
 dependency3.type=UsesDependency
-editor.fx.0.height=722
-editor.fx.0.width=876
-editor.fx.0.x=158
-editor.fx.0.y=216
-objectbench.height=164
-objectbench.width=669
+editor.fx.0.height=1080
+editor.fx.0.width=1920
+editor.fx.0.x=-319
+editor.fx.0.y=-1080
+objectbench.height=148
+objectbench.width=1896
 package.divider.horizontal=0.6
-package.divider.vertical=0.7628294036061026
-package.editor.height=543
-package.editor.width=567
-package.editor.x=557
-package.editor.y=43
-package.frame.height=779
-package.frame.width=693
+package.divider.vertical=0.8515325670498084
+package.editor.height=882
+package.editor.width=1794
+package.editor.x=-319
+package.editor.y=-1080
+package.frame.height=1080
+package.frame.width=1920
 package.numDependencies=3
 package.numTargets=6
 package.showExtends=true
@@ -37,43 +37,42 @@ target1.name=StringUtilitiesTest
 target1.showInterface=false
 target1.type=UnitTestTargetJunit4
 target1.width=110
-target1.x=110
-target1.y=150
+target1.x=500
+target1.y=210
 target2.height=50
-target2.name=BonusTest
+target2.name=LoopFunTest
 target2.showInterface=false
 target2.type=UnitTestTargetJunit4
-target2.width=80
-target2.x=120
-target2.y=270
-target3.association=BonusTest
+target2.width=110
+target2.x=10
+target2.y=240
 target3.height=50
-target3.name=Bonus
+target3.name=LoopFun
 target3.showInterface=false
 target3.type=ClassTarget
 target3.width=80
-target3.x=90
-target3.y=300
+target3.x=200
+target3.y=210
 target4.association=MathUtilitiesTest
 target4.height=50
 target4.name=MathUtilities
 target4.showInterface=false
 target4.type=ClassTarget
 target4.width=100
-target4.x=80
-target4.y=70
+target4.x=210
+target4.y=60
 target5.association=StringUtilitiesTest
 target5.height=50
 target5.name=StringUtilities
 target5.showInterface=false
 target5.type=ClassTarget
 target5.width=110
-target5.x=80
-target5.y=180
+target5.x=470
+target5.y=240
 target6.height=50
 target6.name=MathUtilitiesTest
 target6.showInterface=false
 target6.type=UnitTestTargetJunit4
 target6.width=100
-target6.x=110
-target6.y=40
+target6.x=240
+target6.y=30