Fix minor issues to align with coding standards and improve coding qu…

…ality

src/main/java/duke/Parser.java

@@ -24,7 +24,6 @@ public class Parser {
      * Default constructor to initialize the Parser class.
      */
     public Parser() {
-        //empty constructor to initialize class objects
     }
     static String temp = "";
     private static void updateTask(String str, TaskList tasks) throws InvalidInputException, EmptyInputException, TaskTypeMismatchException {
@@ -180,10 +179,7 @@ else if (str.equals("list")) {
      */
     private static void addToDo(String str, TaskList tasks) throws ToDoCommandUseException {
         String todo = str.substring(4);
-        //remove any leading and trailing whitespace characters and
-        //check whether there is a task after the instruction
         if (todo.trim().isEmpty()) {
-            //this would mean the instruction is incomplete
             throw new ToDoCommandUseException(str);
         }
         String string = str.substring(5);

src/main/java/duke/TaskList.java

@@ -31,7 +31,7 @@ public void addTask(Task task){
      * @param index The index of the task to be removed.
      * @return The removed task.
      */
-    public Task removeTask(int index){
+    public Task removeTask(int index) {
         assert index < this.tasks.size() && index >= 0;
         return this.tasks.remove(index);
     }
@@ -42,7 +42,7 @@ public Task removeTask(int index){
      * @param index The index of the task to be retrieved.
      * @return The retrieved task.
      */
-    public Task getTask(int index){
+    public Task getTask(int index) {
         assert index < this.tasks.size() && index >= 0;
         return this.tasks.get(index);
     }