diff --git a/src/main/java/duke/Deadline.java b/src/main/java/duke/Deadline.java
index 958215378e..759b72a88f 100644
--- a/src/main/java/duke/Deadline.java
+++ b/src/main/java/duke/Deadline.java
@@ -18,7 +18,11 @@ public Deadline(String description, String by) {
         super(description);
         this.by = LocalDateTime.parse(by);
     }
-
+    /**
+     * Gets the full description of the deadline task.
+     * The message here is used to be printed for the user.
+     * @return Message for the description of the deadline task.
+     */
     @Override
     public String printDesc() {
         try {
@@ -28,7 +32,11 @@ public String printDesc() {
             return "Please key in the dates in the format of YYYY-MM-ddThh:mm:ss";
         }
     }
-
+    /**
+     * Gets the full description of the deadline task.
+     * The message here is used to be stored in the duke.txt.
+     * @return Message for the description of the deadline task.
+     */
     @Override
     public String getDescription() {
         return "D~" + super.getDescription() + "~" + this.by;
diff --git a/src/main/java/duke/Event.java b/src/main/java/duke/Event.java
index a94dbd4954..88a1067e32 100644
--- a/src/main/java/duke/Event.java
+++ b/src/main/java/duke/Event.java
@@ -21,14 +21,22 @@ public Event(String description, String from, String to) {
         this.from = LocalDateTime.parse(from);
         this.to = LocalDateTime.parse(to);
     }
-
+    /**
+     * Gets the full description of the event task.
+     * The message here is used to be printed for the user.
+     * @return Message for the description of the event task.
+     */
     @Override
     public String printDesc() {
         String fromMessage = this.from.format(DateTimeFormatter.ofPattern("MMM d yyyy H:mm"));
         String toMessage = this.to.format(DateTimeFormatter.ofPattern("MMM d yyyy H:mm"));
         return "[E]" + super.printDesc() + " (from: " + fromMessage + " to: " + toMessage + ")";
     }
-
+    /**
+     * Gets the full description of the event task.
+     * The message here is used to be stored in the duke.txt.
+     * @return Message for the description of the event task.
+     */
     @Override
     public String getDescription() {
         return "E~" + super.getDescription() + "~" + this.from + " - " + this.to;
diff --git a/src/main/java/duke/Parser.java b/src/main/java/duke/Parser.java
index 90bdfefa8f..39cf491310 100644
--- a/src/main/java/duke/Parser.java
+++ b/src/main/java/duke/Parser.java
@@ -4,19 +4,38 @@
  * The duke.Parser class processes commands by breaking it up to words.
  */
 public class Parser {
+    /**
+     * Splits the input into array of [command word, details].
+     * @return The array of parsed input.
+     */
     public String[] commandSplit(String command) {
         return command.split(" ", 2);
     }
-
+    /**
+     * Splits the input into array of [deadline details, deadline due date].
+     * @return The array of parsed input.
+     */
     public String[] deadlineDetails(String task) {
         return task.split("/by ", 2);
     }
+    /**
+     * Splits the input into array of [event details, event from, event to].
+     * @return The array of parsed input.
+     */
     public String[] eventDetails(String task) {
         return task.split(" /", 3);
     }
+    /**
+     * Splits the input containing details regarding a task.
+     * @return The array of parsed input.
+     */
     public String[] storageSplit(String task) {
         return task.split("~", 6);
     }
+    /**
+     * Splits the input containing details about start and end time of an event task.
+     * @return The array of parsed input.
+     */
     public String[] storageTimeSplit(String time) {
         return time.split(" - ", 2);
     }
diff --git a/src/main/java/duke/Task.java b/src/main/java/duke/Task.java
index 56c86fc6b1..4ea388f02d 100644
--- a/src/main/java/duke/Task.java
+++ b/src/main/java/duke/Task.java
@@ -88,10 +88,18 @@ public String getDescription() {
     public String getDesc() {
         return this.description;
     }
+    /**
+     * Updates the task as a reminder.
+     * This task will then be printed out everytime the charbot is first launched.
+     * @return Message for the progress of the task.
+     */
     public String makeReminder() {
         this.isReminder = true;
         return "OK, I will remind you of this task the next time I see you!\n";
     }
+    /**
+     * Updates the task as a reminder without printing any messages.
+     */
     public void updateReminder() {
         this.isReminder = true;
     }
diff --git a/src/main/java/duke/TaskList.java b/src/main/java/duke/TaskList.java
index 9569152dc5..585c084786 100644
--- a/src/main/java/duke/TaskList.java
+++ b/src/main/java/duke/TaskList.java
@@ -250,6 +250,10 @@ protected static String printReminders() {
             return message;
         }
     }
+    /**
+     * Provides the list of commands that POPOOH can execute.
+     * @return The full list of commands and their formats.
+     */
     public String getHelp() {
         String message = "Here are some of the commands that I can execute!:\n"
                 + "1. List out the all the tasks\n"
diff --git a/src/main/java/duke/Todo.java b/src/main/java/duke/Todo.java
index 5e708f00b4..3e0e4a3230 100644
--- a/src/main/java/duke/Todo.java
+++ b/src/main/java/duke/Todo.java
@@ -12,11 +12,20 @@ public class Todo extends Task {
     public Todo(String description) {
         super(description);
     }
-
+    /**
+     * Gets the full description of the todo task.
+     * The message here is used to be printed for the user.
+     * @return Message for the description of the todo task.
+     */
     @Override
     public String printDesc() {
         return "[T]" + super.printDesc();
     }
+    /**
+     * Gets the full description of the todo task.
+     * The message here is used to be stored in the duke.txt.
+     * @return Message for the description of the todo task.
+     */
     @Override
     public String getDescription() {
         return "T~" + super.getDescription();
diff --git a/src/main/java/duke/Ui.java b/src/main/java/duke/Ui.java
index 769ecc10d7..4bec0de5e4 100644
--- a/src/main/java/duke/Ui.java
+++ b/src/main/java/duke/Ui.java
@@ -4,10 +4,18 @@
  * This class helps Duke interact with the user.
  */
 public class Ui {
+    /**
+     * Prints out the greeting message for when the chatbot is first launched.
+     * @return The greeting message.
+     */
     public static String greet() {
         return "Hello! I'm POPOOH!!\n"
                 + "What can I do for you?\n";
     }
+    /**
+     * Prints out the exit message for when the chatbot.
+     * @return The exit message.
+     */
     public static String exit() {
         return "Glad that I could help you!\n"
                 + "See ya next time hehe :)";