Added different ways the potato can be not delicious!

src/main/java/org/drtshock/NotDeliciousException.java

@@ -1,8 +1,17 @@
 package org.drtshock;
 
+/**
+ * An exception to describe that the potato isn't delicious!
+ */
 public class NotDeliciousException extends Exception {
 
-    public NotDeliciousException() {
+    /**
+     * The reason for non-deliciousness.
+     */
+    private NotDeliciousReason notDeliciousReason;
+
+    public NotDeliciousException(NotDeliciousReason notDeliciousReason) {
+        this.notDeliciousReason = notDeliciousReason;
+    }
 
 }
-}

src/main/java/org/drtshock/NotDeliciousReason.java

@@ -0,0 +1,11 @@
+package org.drtshock;
+
+/**
+ * Different ways the potato can be not delicious
+ */
+public enum NotDeliciousReason {
+    
+    NOT_BAKED,
+    NOT_DELICIOUS_CONDIMENT
+
+}

src/main/java/org/drtshock/Potato.java

@@ -41,7 +41,7 @@ public class Potato implements Tuber {
     public void prepare() throws NotDeliciousException {
         this.addCondiments("sour cream", "chives", "butter", "crumbled bacon", "grated cheese", "ketchup", "salt", "tabasco");
         this.listCondiments();
-        if (!this.isDelicious()) throw new NotDeliciousException();
+        if (!this.isDelicious()) throw new NotDeliciousException(NotDeliciousReason.NOT_BAKED);
     }
 
     /**
@@ -52,7 +52,7 @@ public class Potato implements Tuber {
     public void addCondiments(String... names) throws NotDeliciousException {
         for (String condimentName : names) {
             Condiment condiment = new Condiment(condimentName, true);
-            if (!condiment.isDelicious()) throw new NotDeliciousException();
+            if (!condiment.isDelicious()) throw new NotDeliciousException(NotDeliciousReason.NOT_DELICIOUS_CONDIMENT);
             this.getCondiments().add(condiment);
         }
     }