diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 7a20347..5e0b70e 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -5,12 +5,11 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="4481728b-524b-48ee-9d70-e414a15f05bd" name="Changes" comment="">
-      <change beforePath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab03/IDevice.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab03/IDevice.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab03/IPad.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab03/IPad.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab03/IPhone.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab03/IPhone.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab03/IPhone16.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab03/IPhone16.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab03/IPod.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab03/IPod.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab03/Main.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab03/Main.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab04/Date.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab04/Date.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab04/Name.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab04/Name.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab04/Person.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab04/Person.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab04/Printable.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/code/ca/bcit/comp2522/lab04/Printable.java" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -45,7 +44,7 @@
     "ModuleVcsDetector.initialDetectionPerformed": "true",
     "RunOnceActivity.ShowReadmeOnStart": "true",
     "RunOnceActivity.git.unshallow": "true",
-    "git-widget-placeholder": "main",
+    "git-widget-placeholder": "braeden/lab04",
     "kotlin-language-version-configured": "true",
     "last_opened_file_path": "/home/flami/Projects/comp2522",
     "node.js.detected.package.eslint": "true",
@@ -88,8 +87,8 @@
   <component name="SharedIndexes">
     <attachedChunks>
       <set>
-        <option value="bundled-jdk-9823dce3aa75-bf35d07a577b-intellij.indexing.shared.core-IU-252.26199.169" />
-        <option value="bundled-js-predefined-d6986cc7102b-9c94529fcfe0-JavaScript-IU-252.26199.169" />
+        <option value="bundled-jdk-9823dce3aa75-bf35d07a577b-intellij.indexing.shared.core-IU-252.26830.84" />
+        <option value="bundled-js-predefined-d6986cc7102b-3aa1da707db6-JavaScript-IU-252.26830.84" />
       </set>
     </attachedChunks>
   </component>
diff --git a/src/code/ca/bcit/comp2522/lab04/Date.java b/src/code/ca/bcit/comp2522/lab04/Date.java
index 317601e..8cbfd91 100644
--- a/src/code/ca/bcit/comp2522/lab04/Date.java
+++ b/src/code/ca/bcit/comp2522/lab04/Date.java
@@ -11,66 +11,68 @@ package ca.bcit.comp2522.lab04;
  * @author Calvin Arifianto
  * @version 1.0.0
  */
-public final class Date implements Printable {
+public final class Date implements Printable
+{
+
     // Domain of dates
     private static final int MIN_YEAR = 1800;
     private static final int MAX_YEAR = 2025;
-    private static final int MIN_DAY = 1;
+    private static final int MIN_DAY  = 1;
 
     // Constants for calculating leap year, and days in given month
-    private static final int YEARS_BTWN_LEAP_YEARS = 4;
-    private static final int YEARS_PER_CENTURY = 100;
+    private static final int YEARS_BTWN_LEAP_YEARS     = 4;
+    private static final int YEARS_PER_CENTURY         = 100;
     private static final int YEARS_BTWN_LEAP_CENTURIES = 400;
-    private static final int LEAP_YEAR_MOD_RESULT = 0;
-    private static final int LEAP_YEAR_DAYS = 29;
-    private static final int NON_LEAP_YEAR_DAYS = 28;
-    private static final int MONTH_MOST_DAYS = 31;
-    private static final int MONTH_REGULAR_DAYS = 30;
-    private static final int EVEN = 2;
-    private static final int IS_DIVISIBLE = 1;
+    private static final int LEAP_YEAR_MOD_RESULT      = 0;
+    private static final int LEAP_YEAR_DAYS            = 29;
+    private static final int NON_LEAP_YEAR_DAYS        = 28;
+    private static final int MONTH_MOST_DAYS           = 31;
+    private static final int MONTH_REGULAR_DAYS        = 30;
+    private static final int EVEN                      = 2;
+    private static final int IS_DIVISIBLE              = 1;
 
     // Constants to get next or last value
-    private static final int GET_NEXT = 1;
+    private static final int GET_NEXT     = 1;
     private static final int GET_PREVIOUS = 1;
 
     // Constants to add to sum for calculating day of week
     private static final int CENTURY_CODE_YEAR_EIGHTEEN_HUNDREDS = 2;
-    private static final int CENTURY_CODE_YEAR_TWO_THOUSANDS = 6;
-    private static final int CENTURY_CODE_AND_MONTH_CODE = 12;
+    private static final int CENTURY_CODE_YEAR_TWO_THOUSANDS     = 6;
+    private static final int CENTURY_CODE_AND_MONTH_CODE         = 12;
 
     // Century definitions
     private static final int YEAR_EIGHTEEN_HUNDREDS = 1800;
     private static final int YEAR_NINETEEN_HUNDREDS = 1900;
-    private static final int YEAR_TWO_THOUSANDS = 2000;
+    private static final int YEAR_TWO_THOUSANDS     = 2000;
 
     // Months
-    private static final int JANUARY = 1;
-    private static final int FEBRUARY = 2;
-    private static final int MARCH = 3;
-    private static final int APRIL = 4;
-    private static final int MAY = 5;
-    private static final int JUNE = 6;
-    private static final int JULY = 7;
-    private static final int AUGUST = 8;
+    private static final int JANUARY   = 1;
+    private static final int FEBRUARY  = 2;
+    private static final int MARCH     = 3;
+    private static final int APRIL     = 4;
+    private static final int MAY       = 5;
+    private static final int JUNE      = 6;
+    private static final int JULY      = 7;
+    private static final int AUGUST    = 8;
     private static final int SEPTEMBER = 9;
-    private static final int OCTOBER = 10;
-    private static final int NOVEMBER = 11;
-    private static final int DECEMBER = 12;
+    private static final int OCTOBER   = 10;
+    private static final int NOVEMBER  = 11;
+    private static final int DECEMBER  = 12;
 
     // Days of week
-    private static final int SATURDAY = 0;
-    private static final int SUNDAY = 1;
-    private static final int MONDAY = 2;
-    private static final int TUESDAY = 3;
+    private static final int SATURDAY  = 0;
+    private static final int SUNDAY    = 1;
+    private static final int MONDAY    = 2;
+    private static final int TUESDAY   = 3;
     private static final int WEDNESDAY = 4;
-    private static final int THURSDAY = 5;
-    private static final int FRIDAY = 6;
+    private static final int THURSDAY  = 5;
+    private static final int FRIDAY    = 6;
 
     // Constants used to calculate day of week
     private static final int DIVISION_BY_TWELVE = 12;
-    private static final int DIVISION_BY_FOUR = 4;
-    private static final int DAYS_OF_WEEK = 7;
-    private static final String MONTH_CODES = "144025036146";
+    private static final int DIVISION_BY_FOUR   = 4;
+    private static final int DAYS_OF_WEEK       = 7;
+    private static final String MONTH_CODES     = "144025036146";
 
     private final int year;
     private final int month;
@@ -87,7 +89,8 @@ public final class Date implements Printable {
         c) If the year is divisible by LEAP_YEAR_MOD_ONE_HUNDRED and is
            divisible by LEAP_YEAR_MOD_FOUR_HUNDRED, then it is a leap year.
      */
-    private static boolean isLeapYear(final int year) {
+    private static boolean isLeapYear(final int year)
+    {
 
         final boolean isLeapYear;
         final boolean leapYearRuleOne;
@@ -120,7 +123,8 @@ public final class Date implements Printable {
             final boolean isLeapYear
     ) {
 
-        if (month == FEBRUARY) {
+        if (month == FEBRUARY)
+        {
             if (isLeapYear) {
                 return LEAP_YEAR_DAYS;
             } else {
@@ -216,7 +220,6 @@ public final class Date implements Printable {
      * @return year
      */
     public final int getYear() {
-
         return this.year;
     }
 
@@ -224,7 +227,8 @@ public final class Date implements Printable {
      * getMonth of Date
      * @return month
      */
-    public final String getMonth() {
+    public final String getMonth()
+    {
 
         final String month;
 
@@ -264,7 +268,6 @@ public final class Date implements Printable {
      * @return day
      */
     public final int getDay() {
-
         return this.day;
     }
 
@@ -272,8 +275,8 @@ public final class Date implements Printable {
      * getYyyyMmDd formatted as string
      * @return date in YyyyMmDd format
      */
-    public final String getYyyyMmDd() {
-
+    public final String getYyyyMmDd()
+    {
         final String date;
 
         date = this.year + "-" +  this.month + "-" + this.day;
@@ -306,7 +309,8 @@ public final class Date implements Printable {
      *
      * @return day of week
      */
-    public final String getDayOfWeek() {
+    public final String getDayOfWeek()
+    {
 
         final int year;
         final int century;
@@ -335,16 +339,16 @@ public final class Date implements Printable {
         year = this.year - century;
 
         if (
-                isLeapYear(this.year) &&
-                        (this.month == JANUARY || this.month == FEBRUARY) &&
-                        this.year >= YEAR_TWO_THOUSANDS
+            isLeapYear(this.year) &&
+            (this.month == JANUARY || this.month == FEBRUARY) &&
+            this.year >= YEAR_TWO_THOUSANDS
         ) {
 
             step0 = CENTURY_CODE_AND_MONTH_CODE;
 
         } else if (
                 isLeapYear(this.year) &&
-                        (this.month == JANUARY || this.month == FEBRUARY)
+                (this.month == JANUARY || this.month == FEBRUARY)
         ) {
             step0 = CENTURY_CODE_YEAR_TWO_THOUSANDS;
         } else if (this.year >= YEAR_TWO_THOUSANDS) {
@@ -384,6 +388,9 @@ public final class Date implements Printable {
         return day;
     }
 
+    /**
+     * display Date to console in yyyy-mm-dd format
+     */
     @Override
     public void display() {
         System.out.println(getYyyyMmDd());
diff --git a/src/code/ca/bcit/comp2522/lab04/Name.java b/src/code/ca/bcit/comp2522/lab04/Name.java
index 85b4ae0..80cf20d 100644
--- a/src/code/ca/bcit/comp2522/lab04/Name.java
+++ b/src/code/ca/bcit/comp2522/lab04/Name.java
@@ -1,20 +1,22 @@
 package ca.bcit.comp2522.lab04;
 
-public class Name {
+/**
+ * Name class holds first and last name,
+ * and validates name lengths
+ *
+ * @author Braeden Sowinski
+ * @author Nico Agostini
+ * @author Trishaan Shetty
+ * @author Calvin Arifianto
+ * @version 1.0.0
+ */
+public class Name implements Printable
+{
     private final String first;
     private final String last;
 
     private static final int MAX_CHARACTERS = 50;
 
-
-    public Name(final String first, final String last)
-    {
-        stringValidator(first, MAX_CHARACTERS);
-        stringValidator(last,  MAX_CHARACTERS);
-        this.first = first;
-        this.last = last;
-    }
-
     /**
      * stringValidator checks the string being passed into it for
      * being null, blank, empty or over the limit of characters.
@@ -23,44 +25,55 @@ public class Name {
      * @param maxLength passes the integer value of the number of character count
      *                  the String can be.
      * */
-    public void stringValidator(final String stringToCheck,
-                                final int maxLength){
+    private static void stringValidator(final String stringToCheck, final int maxLength)
+    {
 
         if (stringToCheck == null)
         {
-            throw new IllegalArgumentException(
-                    "String cannot be null");
+            throw new IllegalArgumentException("String cannot be null");
         }
 
-        if (stringToCheck.isBlank() ||
-                stringToCheck.isEmpty())
+        if (stringToCheck.isEmpty() ||
+            stringToCheck.isBlank())
         {
-            throw new IllegalArgumentException(
-                    "String cannot be empty or blank");
+            throw new IllegalArgumentException("String cannot be empty or blank");
         }
 
         if (stringToCheck.length() > maxLength)
         {
             throw new IllegalArgumentException(
                     "String longer than " + maxLength +
-                            " characters");
+                    " characters"
+            );
         }
     }
 
-    public void stringValidator(final String stringToCheck)
+    /**
+     * stringValidator with default MAX_CHARACTERS restriction
+     * @param stringToCheck passes the string to be checked
+     */
+    private static void stringValidator(final String stringToCheck)
     {
+        stringValidator(stringToCheck, MAX_CHARACTERS);
+    }
 
-        if (stringToCheck == null)
-        {
-            throw new IllegalArgumentException(
-                    "String cannot be null");
-        }
+    /**
+     * Name constructor
+     * @param first name to save
+     * @param last name to save
+     */
+    public Name(final String first, final String last)
+    {
+        stringValidator(first);
+        stringValidator(last);
 
-        if (stringToCheck.isBlank() ||
-                stringToCheck.isEmpty())
-        {
-            throw new IllegalArgumentException(
-                    "String cannot be empty or blank");
-        }
+        this.first = first;
+        this.last = last;
+    }
+
+    @Override
+    public void display()
+    {
+        System.out.println("First: " + first + " Last: " + last);
     }
 }
diff --git a/src/code/ca/bcit/comp2522/lab04/Person.java b/src/code/ca/bcit/comp2522/lab04/Person.java
index 4179ac4..2c92b7e 100644
--- a/src/code/ca/bcit/comp2522/lab04/Person.java
+++ b/src/code/ca/bcit/comp2522/lab04/Person.java
@@ -1,37 +1,50 @@
 package ca.bcit.comp2522.lab04;
 
-public class Person {
+/**
+ * Person contains date of birth, death, and a name.
+ *
+ * @author Braeden Sowinski
+ * @author Nico Agostini
+ * @author Trishaan Shetty
+ * @author Calvin Arifianto
+ * @version 1.0.0
+ */
+public class Person
+{
     private final Date dateOfBirth;
     private final Date dateOfDeath;
     private final Name name;
 
-    private final boolean CAN_BE_NULL = true;
-    private final boolean CANT_BE_NULL = false;
+    /**
+     * validateObject ensures a given object is not null
+     * @param object to ensure is not null
+     * @param objectName variable name of object for log
+     */
+    private static void validateObject(
+            final Object object,
+            final String objectName
+    ) {
+        if (object == null) {
+            throw new IllegalArgumentException(objectName + " cannot be null");
+        }
+    }
 
-    public Person(final Date dateOfBirth,
-                  final Date dateOfDeath,
-                  final Name name)
-    {
-        dateValidator(dateOfBirth, CAN_BE_NULL);
-        dateValidator(dateOfDeath, CANT_BE_NULL);
+    /**
+     * Person construct
+     * @param dateOfBirth of person, cannot be null
+     * @param dateOfDeath of person, can be null
+     * @param name of person
+     */
+    public Person(
+        final Date dateOfBirth,
+        final Date dateOfDeath,
+        final Name name
+    ) {
+        validateObject(dateOfBirth, "date of birth");
+        validateObject(name, "name");
 
         this.dateOfBirth = dateOfBirth;
         this.dateOfDeath = dateOfDeath;
         this.name = name;
-
     }
-
-
-    public void dateValidator(final Date dateToBeChecked,
-                              final boolean canBeNull)
-    {
-        if (!canBeNull)
-        {
-         if ( dateToBeChecked == null)
-         {
-             throw new IllegalArgumentException("Date cannot be null");
-         }
-        }
-    }
-
 }
diff --git a/src/code/ca/bcit/comp2522/lab04/Printable.java b/src/code/ca/bcit/comp2522/lab04/Printable.java
index 5e46bbd..ead6470 100644
--- a/src/code/ca/bcit/comp2522/lab04/Printable.java
+++ b/src/code/ca/bcit/comp2522/lab04/Printable.java
@@ -1,5 +1,17 @@
 package ca.bcit.comp2522.lab04;
 
-public interface Printable {
+/**
+ * Printable classes must print all their instance
+ * variables and the instance variables of their parents
+ * to the console in a sentence.
+ *
+ * @author Braeden Sowinski
+ * @author Nico Agostini
+ * @author Trishaan Shetty
+ * @author Calvin Arifianto
+ * @version 1.0.0
+ */
+public interface Printable
+{
     void display();
 }