diff --git a/src/main/java/seedu/address/logic/parser/AddCommandParser.java b/src/main/java/seedu/address/logic/parser/AddCommandParser.java
index 0ed49a129ca..8e1da336925 100644
--- a/src/main/java/seedu/address/logic/parser/AddCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/AddCommandParser.java
@@ -13,7 +13,6 @@
 import static seedu.address.logic.parser.CliSyntax.PREFIX_SALARY;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_TAG;
 
-import java.util.Optional;
 import java.util.Set;
 import java.util.stream.Stream;
 
diff --git a/src/main/java/seedu/address/logic/parser/ParserUtil.java b/src/main/java/seedu/address/logic/parser/ParserUtil.java
index 8a93c57c077..0d4c520219f 100644
--- a/src/main/java/seedu/address/logic/parser/ParserUtil.java
+++ b/src/main/java/seedu/address/logic/parser/ParserUtil.java
@@ -156,8 +156,7 @@ public static Tag parseTag(String tag) throws ParseException {
     public static InterviewTime parseInterviewTime(String dateTime) throws ParseException {
         if (dateTime == null) {
             return new InterviewTime(null);
-        }
-        else {
+        } else {
             String trimmedDateTime = dateTime.trim();
             if (!InterviewTime.isValidInterviewTime(trimmedDateTime)) {
                 throw new ParseException(InterviewTime.MESSAGE_CONSTRAINTS);
diff --git a/src/main/java/seedu/address/model/person/InterviewTime.java b/src/main/java/seedu/address/model/person/InterviewTime.java
index 85baff00e07..701605dd6a3 100644
--- a/src/main/java/seedu/address/model/person/InterviewTime.java
+++ b/src/main/java/seedu/address/model/person/InterviewTime.java
@@ -1,6 +1,5 @@
 package seedu.address.model.person;
 
-import static java.util.Objects.requireNonNull;
 import static seedu.address.commons.util.AppUtil.checkArgument;
 
 import java.time.LocalDateTime;
@@ -34,8 +33,7 @@ public class InterviewTime {
     public InterviewTime(String dateTime) {
         if (dateTime == null) {
             this.dateTime = null;
-        }
-        else {
+        } else {
             checkArgument(isValidInterviewTime(dateTime), MESSAGE_CONSTRAINTS);
             this.dateTime = LocalDateTime.parse(dateTime, formatter); //set format
         }
@@ -49,13 +47,11 @@ public InterviewTime(String dateTime) {
     public static boolean isValidInterviewTime(String test) {
         if (test == null) {
             return true;
-        }
-        else {
+        } else {
             try {
                 LocalDateTime.parse(test, formatter);
                 return true;
-            }
-            catch (DateTimeParseException e) {
+            } catch (DateTimeParseException e) {
                 return false;
             }
         }
@@ -97,8 +93,7 @@ public boolean isBefore(InterviewTime date) {
     public String toString() {
         if (dateTime == null) {
             return "No Interviews set";
-        }
-        else {
+        } else {
             DateTimeFormatter beautify = DateTimeFormatter.ofPattern("MMMM dd, yyyy hh:mm a", Locale.ENGLISH);
             return dateTime.format(beautify);
         }
@@ -116,8 +111,8 @@ public boolean equals(Object other) {
         }
 
         InterviewTime otherDateTime = (InterviewTime) other;
-        return (dateTime == null && otherDateTime.dateTime == null) ||
-                (dateTime != null && dateTime.equals(otherDateTime.dateTime));
+        return (dateTime == null && otherDateTime.dateTime == null)
+                || (dateTime != null && dateTime.equals(otherDateTime.dateTime));
     }
 
     @Override
diff --git a/src/main/java/seedu/address/model/person/Person.java b/src/main/java/seedu/address/model/person/Person.java
index cb32dd9df0b..b34a59bd161 100644
--- a/src/main/java/seedu/address/model/person/Person.java
+++ b/src/main/java/seedu/address/model/person/Person.java
@@ -47,7 +47,6 @@ public Person(
         this.email = email;
         this.address = address;
         this.dateTime = dateTime;
-        System.out.println("REACHED HERE");
         this.salary = salary;
         this.info = info;
         this.tags.addAll(tags);
diff --git a/src/main/java/seedu/address/storage/JsonAdaptedPerson.java b/src/main/java/seedu/address/storage/JsonAdaptedPerson.java
index da8db136d19..3161324cc6c 100644
--- a/src/main/java/seedu/address/storage/JsonAdaptedPerson.java
+++ b/src/main/java/seedu/address/storage/JsonAdaptedPerson.java
@@ -81,8 +81,7 @@ public JsonAdaptedPerson(Person source) {
         address = source.getAddress().value;
         if (source.getDateTime() == null) {
             dateTime = null;
-        }
-        else {
+        } else {
             dateTime = source.getDateTime().rawToString();
         }
         salary = source.getSalary().toString();
diff --git a/src/test/java/seedu/address/model/person/InterviewTimeTest.java b/src/test/java/seedu/address/model/person/InterviewTimeTest.java
index 350a19aacd8..e3b82fa48e8 100644
--- a/src/test/java/seedu/address/model/person/InterviewTimeTest.java
+++ b/src/test/java/seedu/address/model/person/InterviewTimeTest.java
@@ -2,6 +2,7 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static seedu.address.testutil.Assert.assertThrows;
 
@@ -12,8 +13,9 @@
 
 public class InterviewTimeTest {
     @Test
-    public void constructor_null_throwsNullPointerException() {
-        assertThrows(NullPointerException.class, () -> new InterviewTime(null));
+    public void constructor_null_doesNotThrowException() {
+        InterviewTime interviewTime = new InterviewTime(null);
+        assertNull(interviewTime.getDateTime());
     }
 
     @Test