diff --git a/recordList.txt b/recordList.txt
new file mode 100644
index 000000000..e69de29bb
diff --git a/src/main/java/seedu/duke/DIYProblemSet.java b/src/main/java/seedu/duke/DIYProblemSet.java
index 4379f273a..9fa9b0716 100644
--- a/src/main/java/seedu/duke/DIYProblemSet.java
+++ b/src/main/java/seedu/duke/DIYProblemSet.java
@@ -12,7 +12,6 @@ public DIYProblemSet() {
     }
 
     public void addDIYProblemSet(Ui ui) {
-        Scanner scanner = new Scanner(System.in);
         ui.print("Please input your DIY problemSet: ");
         String description;
         String correctAnswer;
@@ -21,9 +20,9 @@ public void addDIYProblemSet(Ui ui) {
         String quit = "";
         while (!quit.equals("y")) {
             ui.print("input the description of the problem (e.g. 1+2*3): ");
-            description = scanner.nextLine();
+            description = ui.readCommand();
             ui.print("input the correct answer of the problem (e.g. 7): ");
-            correctAnswer = scanner.nextLine();
+            correctAnswer = ui.readCommand();
             boolean isValidAnswer = false;
             while (!isValidAnswer) {
                 try {
@@ -31,18 +30,18 @@ public void addDIYProblemSet(Ui ui) {
                     isValidAnswer = true;
                 } catch (NumberFormatException e) {
                     ui.print("Invalid answer! Please input a number.");
-                    correctAnswer = scanner.nextLine();
+                    correctAnswer = ui.readCommand();
                 }
             }
             ui.print("Input the explanations of the problem (e.g. 1+2*3=7): ");
-            explanations = scanner.nextLine();
+            explanations = ui.readCommand();
             Problem problem = new Problem(description,answer,explanations);
             problemSet.add(problem);
             ui.print("Have you finished adding problems? y/n: ");
-            quit = scanner.nextLine();
+            quit = ui.readCommand();
             while (!quit.equals("y") && !quit.equals("n")) {
                 ui.print("input is invalid! Please input 'y' or 'n': ");
-                quit = scanner.nextLine();
+                quit = ui.readCommand();
             }
         }
         Record record = new Record(LocalDateTime.now(), 0.0, 0.0, problemSet, ProblemSetType.USER_DIY.getValue());
@@ -50,8 +49,5 @@ public void addDIYProblemSet(Ui ui) {
         ui.print("Record successfully saved!");
         record.print(true);
         Ui.showLine();
-        scanner.close();
     }
-
-
 }