Fix Code Quality

src/main/java/Duke.java

@@ -19,7 +19,6 @@ public class Duke {
      */
     String getResponse(String input) throws IOException {
         Command c = Parser.parse(input);
-        assert (c instanceof Command) : "Parser did not return a command.";
         return c.execute(tasks, ui, storage);
     }
 

src/main/java/command/AddCommand.java

@@ -36,7 +36,11 @@ public AddCommand(String type, String taskDescription) {
     }
 
     /**
-     * Executes the given task and prints the respective output.
+     * Executes the given add task.
+     * @param tasks A {@Code: TaskList} object
+     * @param ui A {@Code: Ui} object
+     * @param storage A {@Code: Storage} object
+     * @return A String representing the information of the executed task
      */
     public String execute(TaskList tasks, Ui ui, Storage storage) throws IOException {
 

src/main/java/command/DeleteCommand.java

@@ -19,7 +19,11 @@ public DeleteCommand(int index) {
     }
 
     /**
-     * Executes the given task and prints the respective output.
+     * Executes the given delete task.
+     * @param tasks A {@Code: TaskList} object
+     * @param ui A {@Code: Ui} object
+     * @param storage A {@Code: Storage} object
+     * @return A String representing the information of the executed task
      */
     public String execute(TaskList tasks, Ui ui, Storage storage) throws IOException {
 

src/main/java/command/DoneCommand.java

@@ -19,7 +19,11 @@ public DoneCommand(int index) {
     }
 
     /**
-     * Executes the given task and prints the respective output.
+     * Executes the given done task.
+     * @param tasks A {@Code: TaskList} object
+     * @param ui A {@Code: Ui} object
+     * @param storage A {@Code: Storage} object
+     * @return A String representing the information of the executed task
      */
     public String execute(TaskList tasks, Ui ui, Storage storage) throws IOException {
 

src/main/java/command/ExitCommand.java

@@ -7,7 +7,11 @@
 public class ExitCommand extends Command {
 
     /**
-     * Executes the given task and prints the respective output.
+     * Executes the given exit task.
+     * @param tasks A {@Code: TaskList} object
+     * @param ui A {@Code: Ui} object
+     * @param storage A {@Code: Storage} object
+     * @return A String representing the information of the executed task
      */
     public String execute(TaskList tasks, Ui ui, Storage storage) {
 

src/main/java/command/FindCommand.java

@@ -13,7 +13,11 @@ public FindCommand(String description) {
     }
 
     /**
-     * Executes the given task and prints the respective output.
+     * Executes the given find task.
+     * @param tasks A {@Code: TaskList} object
+     * @param ui A {@Code: Ui} object
+     * @param storage A {@Code: Storage} object
+     * @return A String representing the information of the executed task
      */
     public String execute(TaskList tasks, Ui ui, Storage storage) {
 

src/main/java/command/HelpCommand.java

@@ -17,7 +17,11 @@ public class HelpCommand extends Command {
     private static final String EVENT_MSG = "event [description] [/at] [date] - Add an event task.";
 
     /**
-     * Executes the given task and prints the respective output.
+     * Executes the given help task.
+     * @param tasks A {@Code: TaskList} object
+     * @param ui A {@Code: Ui} object
+     * @param storage A {@Code: Storage} object
+     * @return A String representing the information of the help commands
      */
     public String execute(TaskList tasks, Ui ui, Storage storage) {
         String output = "";

src/main/java/command/InvalidCommand.java

@@ -13,7 +13,11 @@ public InvalidCommand(String errorMessage) {
     }
 
     /**
-     * Executes the given task and prints the respective output.
+     * Executes the given InvalidCommand task.
+     * @param tasks A {@Code: TaskList} object
+     * @param ui A {@Code: Ui} object
+     * @param storage A {@Code: Storage} object
+     * @return A String representing the error message of the command
      */
     public String execute(TaskList tasks, Ui ui, Storage storage) {
 

src/main/java/command/ListCommand.java

@@ -7,7 +7,11 @@
 public class ListCommand extends Command {
 
     /**
-     * Executes the given task and prints the respective output.
+     * Executes the given List task.
+     * @param tasks A {@Code: TaskList} object
+     * @param ui A {@Code: Ui} object
+     * @param storage A {@Code: Storage} object
+     * @return A String representing the list of tasks
      */
     public String execute(TaskList tasks, Ui ui, Storage storage) {
 

src/main/java/tasks/Task.java

@@ -31,9 +31,8 @@ public String toString() {
     }
 
     /**
-     * Returns a StatusIcon, based on whether the task is completed or not.
-     *
-     * @return StatusIcon
+     * Returns a status icon, based on whether the task is completed or not.
+     * @return String representing the status icon
      */
     public String getStatusIcon() {
         // X to represent done, nothing to represent not done

src/test/java/DeadLineTest.java

@@ -26,4 +26,6 @@ public void testGetStatusIcon() {
         d.setAsDone();
         assertEquals("X", d.getStatusIcon());
     }
+
+
 }