[T5A1][F11-B3]Praveer Tewari

doc/DeveloperGuide.md

@@ -51,3 +51,31 @@
 * Problem: Test fails during the very first time.<br>
   Solution: The output of the very first test run could be slightly different because the program
   creates a new storage file. Tests should pass from the 2nd run onwards.
+
+### User stories 
+
+ 1. As a user, I can search contacts by their tags, so that I can find every contact of a certain tag.
+ 2. As a user, I can create groups, so that I can split my contacts into different groups.
+ 3. As a user, I can view all contacts of a certain group.
+
+### Use Cases
+
+Use case: 01 - Rename Tag
+Actor: User
+	1. User chooses tag to rename.
+	2. AddressBook requests for new tag name.
+	3. User enters new tag name.
+	4. AddressBook renames the tag.
+		Use case ends.
+Extensions:
+	1a. AddressBook detects no such tag name.
+		1a1. AddressBook informs user no such tag name exists.
+		Use case ends.
+
+### Non-Functional Requirements
+
+1. Performance - The system should respond to every command within a second.
+2. Quality - The system should be easily understood and be usable by someone who has never used a CLI program before.
+
+
+

src/seedu/addressbook/commands/CommandResult.java

@@ -11,7 +11,7 @@
 public class CommandResult {
 
     /** The feedback message to be shown to the user. Contains a description of the execution result */
-    public final String feedbackToUser;
+    private final String feedbackToUser;
 
     /** The list of persons that was produced by the command */
     private final List<? extends ReadOnlyPerson> relevantPersons;
@@ -32,5 +32,9 @@ public CommandResult(String feedbackToUser, List<? extends ReadOnlyPerson> relev
     public Optional<List<? extends ReadOnlyPerson>> getRelevantPersons() {
         return Optional.ofNullable(relevantPersons);
     }
+
+    public String getFeedbackToUser() {
+    	return feedbackToUser;
+    }
 
 }

src/seedu/addressbook/data/person/Printable.java

@@ -0,0 +1,5 @@
+package seedu.addressbook.data.person;
+
+public interface Printable {
+
+}

src/seedu/addressbook/ui/TextUi.java

@@ -126,7 +126,7 @@ public void showResultToUser(CommandResult result) {
         if(resultPersons.isPresent()) {
             showPersonListView(resultPersons.get());
         }
-        showToUser(result.feedbackToUser, DIVIDER);
+        showToUser(result.getFeedbackToUser(), DIVIDER);
     }
 
     /**