updated

src/AssessmentPartThree.java

@@ -56,33 +56,46 @@ public class AssessmentPartThree {
 		 
 	 public String encryptedString(String theMessage, int theOffset)
 	 {
-		
 		         // 06 - encryptedMessage
 		         // Complete this method so that it uses encryptedCharacter to 
-		         // return the encrypted version of theMessage using theOffset
-	
-	
-		 StringBuilder strBuilder = new StringBuilder();
-		 
-		 char x ;
+		         // return the encrypted version of theMessage using theOffset	
+		 StringBuilder string = new StringBuilder(); //creates an empty StringBuilder called String
+		 char j ; // creates an empty char called j
 		 
-		 for (int i = 0; i < theMessage.length(); i++)
+		 for (int i = 0; i < theMessage.length(); i++) // creates a for loop that iterates until i is greater then the length of whatever is stored in the string "theMessage"
 		 {
-			 x = theMessage.charAt(i);
+			 j = theMessage.charAt(i); // makes j equal to the i'th character of theMessage
 			 
-			 if (Character.isLetter(x))
-					 {
-				 		x = (char) (theMessage.charAt(i) + theOffset);
-				 		
-				 		if ((Character.isLowerCase(theMessage.charAt(i))) && x > 'z' || (Character.isUpperCase(theMessage.charAt(i))) && x > 'Z')))
-				 		
-							{
-								x = (char) (theMessage.charAt(i) + theOffset);
+			if (Character.isLetter(j)) // if the value assigned to j is a letter runs the following
+			{
+				j = (char) (theMessage.charAt(i) + theOffset); // makes j a char equal to the i'th value of theMessage + the value of the offset
+			}
+			
+			if ((Character.isLowerCase(theMessage.charAt(i))) && j > 'z')		
+				{
+					j = (char) (theMessage.charAt(i) - (theOffset - 26));
+				}
+			
+			if (Character.isUpperCase(theMessage.charAt(i)) && j > 'Z')	
+				{
+					j = (char) (theMessage.charAt(i) - (theOffset - 26));
+				}
+			
+			if (Character.isUpperCase(theMessage.charAt(i)) && j < 'A')
+				{
+					j = (char) (theMessage.charAt(i) + (theOffset + 26));
+				}
 								
-								if ((Character.isLowerCase(theMessage.charAt(i)) && < 'a' || (Character.isUpperCase(theMessage.chatTA))
-							}
-					 }
+			if ((Character.isLowerCase(theMessage.charAt(i)) && j < 'a'))
+				{
+					j = (char) (theMessage.charAt(i) + (theOffset + 26));
+				}
+				string.append (j);
 		 }
+	
+		 return string.toString(); // returns a string containing whatever is stored in the stringbuilder "string"
+	 }
+	 
 		 
 		 
 		 
@@ -127,7 +140,7 @@ public class AssessmentPartThree {
 	*/
 	 }
 	
-	}
+