diff --git a/src/CylinderCalculator.java b/src/CylinderCalculator.java
new file mode 100644
index 0000000..896e818
--- /dev/null
+++ b/src/CylinderCalculator.java
@@ -0,0 +1,23 @@
+import java.util.Scanner;
+
+public class CylinderCalculator {
+    public CylinderCalculator() {}
+
+    public void display() {
+        Scanner scanner = new Scanner(System.in);
+        System.out.print("Height of the cylinder:");
+        int height = scanner.nextInt();
+        System.out.print("Radius of the cylinder:");
+        int radius = scanner.nextInt();
+
+        System.out.printf("The surface area of the cylinder is: %.1f and the volume is %.1f",
+                Math.TAU*radius*height + Math.TAU*radius*2,
+                Math.PI * radius * 2 * height
+        );
+    }
+
+    public static void main(String[] args) {
+        CylinderCalculator r = new CylinderCalculator();
+        r.display();
+    }
+}
diff --git a/src/EmployeeEarnings.java b/src/EmployeeEarnings.java
deleted file mode 100644
index 41087db..0000000
--- a/src/EmployeeEarnings.java
+++ /dev/null
@@ -1,33 +0,0 @@
-public class EmployeeEarnings {
-    EmployeeEarnings() {
-    }
-
-    public void top() {
-        System.out.printf("%50s %n%n","MWPSB Employee Earnings");
-        System.out.printf("%-20s %-20s %-20s %-20s %n %n","Employee","Hourly Rate","Hours per week","Gross Monthly Salary");
-    }
-
-    public void data() {
-        String name1 = "Akane Tsunemori";
-        String name2 = "Shinya Kogami";
-        String name3 = "Shusei Kagari";
-
-        double rate1 = 31.5;
-        double rate2 = 18.25;
-        double rate3 = 22;
-
-        int hours1 = 45;
-        int hours2 = 24;
-        int hours3 = 37;
-
-        System.out.printf("%-20s $%-20.2f%-20d $%-20.2f %n", name1, rate1, hours1, rate1*hours1*4);
-        System.out.printf("%-20s $%-20.2f%-20d $%-20.2f %n", name2, rate2, hours2, rate2*hours2*4);
-        System.out.printf("%-20s $%-20.2f%-20d $%-20.2f %n", name3, rate3, hours3, rate3*hours3*4);
-    }
-
-    public static void main(String[] args) {
-        EmployeeEarnings chart = new EmployeeEarnings();
-        chart.top();
-        chart.data();
-    }
-}
\ No newline at end of file
diff --git a/src/Lesson.java b/src/Lesson.java
new file mode 100644
index 0000000..cf2bf46
--- /dev/null
+++ b/src/Lesson.java
@@ -0,0 +1,18 @@
+import hsa.Console;
+
+public class Lesson {
+    Console c;
+
+    public Lesson() {
+        c = new Console(24);
+    }
+
+    public void display() {
+        c.print(Math.pow(3, 2));
+    }
+
+    public static void main(String[] args) {
+        Lesson l = new Lesson();
+        l.display();
+    }
+}
\ No newline at end of file
diff --git a/src/MyText.java b/src/MyText.java
deleted file mode 100644
index 74b126f..0000000
--- a/src/MyText.java
+++ /dev/null
@@ -1,31 +0,0 @@
-// Ian An
-// Oct 15 2026
-// User Input Assignment
-
-import java.util.Scanner;
-
-public class MyText {
-    public static void output() {
-        Scanner s = new Scanner (System.in);
-
-        String name;
-        String lastName;
-        int grade;
-
-        System.out.println("What is your first name?");
-        name = s.nextLine();
-        System.out.println("Hello "+name);
-
-        System.out.println("What is your last name");
-        lastName = s.nextLine();
-        System.out.println("Hello "+lastName);
-
-        System.out.println("What is your grade?");
-        grade = s.nextInt();
-        System.out.printf("So, %s %s, are you really in grade %d?",name,lastName,grade);
-    }
-
-    public static void main(String[] args) {
-        output();
-    }
-}
diff --git a/src/NumberRounder.java b/src/NumberRounder.java
new file mode 100644
index 0000000..b26191a
--- /dev/null
+++ b/src/NumberRounder.java
@@ -0,0 +1,20 @@
+import java.util.Scanner;
+
+public class NumberRounder {
+    public NumberRounder() {}
+
+    public void display() {
+        Scanner scanner = new Scanner(System.in);
+        System.out.print("The number you want to round:");
+        double Number = scanner.nextDouble();
+        System.out.print("Round to the nearest 1, 10, 100, 1000:");
+        int round = scanner.nextInt();
+
+        System.out.printf("The rounded number is: %d", (int) (Number + 5) / round * round);
+    }
+
+    public static void main(String[] args) {
+        NumberRounder r = new NumberRounder();
+        r.display();
+    }
+}
diff --git a/src/PizzaBurner.java b/src/PizzaBurner.java
new file mode 100644
index 0000000..935509f
--- /dev/null
+++ b/src/PizzaBurner.java
@@ -0,0 +1,29 @@
+import java.util.Scanner;
+
+public class PizzaBurner {
+    public PizzaBurner() {}
+
+    public void display() {
+        Scanner scanner = new Scanner(System.in);
+        System.out.print("Enter the number of pizza slices: ");
+        int slices = scanner.nextInt();
+
+        double caloriesPerSlice = 355.0;
+        double burnRatePerHour = 550.0;
+
+        double totalCalories = slices * caloriesPerSlice;
+        double totalHours = totalCalories / burnRatePerHour;
+
+        System.out.printf("Hours to burn off: %.2f %n", totalHours);
+
+        int totalMinutes = (int) Math.round(totalHours * 60);
+        int hours = totalMinutes / 60;
+        int minutes = totalMinutes % 60;
+        System.out.printf("That is around %d hours and %d minutes",hours,minutes);
+    }
+
+    public static void main(String[] args) {
+        PizzaBurner p = new PizzaBurner();
+        p.display();
+    }
+}
\ No newline at end of file
diff --git a/src/RectangleArea.java b/src/RectangleArea.java
new file mode 100644
index 0000000..1be6497
--- /dev/null
+++ b/src/RectangleArea.java
@@ -0,0 +1,20 @@
+import java.util.Scanner;
+
+public class RectangleArea {
+    public RectangleArea() {}
+
+    public void display() {
+        Scanner scanner = new Scanner(System.in);
+        System.out.print("Length of the rectangle:");
+        int length = scanner.nextInt();
+        System.out.print("Width of the rectangle:");
+        int width = scanner.nextInt();
+
+        System.out.printf("The area of the rectangle is: %d", length*width);
+    }
+
+    public static void main(String[] args) {
+        RectangleArea r = new RectangleArea();
+        r.display();
+    }
+}
diff --git a/src/VariablesAssignmentB.java b/src/VariablesAssignmentB.java
deleted file mode 100644
index fcd511a..0000000
--- a/src/VariablesAssignmentB.java
+++ /dev/null
@@ -1,29 +0,0 @@
-public class VariablesAssignmentB {
-    VariablesAssignmentB() {
-
-    }
-
-    public void Title() {
-        System.out.println("Name Program");
-    }
-
-    public void name1(String first, String last) {
-        System.out.printf("%s %s %n",first.toLowerCase(), last.toUpperCase());
-    }
-
-    public void name2(String lastName) {
-        for (int i = 0; i < lastName.length(); i++) {
-            System.out.println(lastName.charAt(i));
-        }
-    }
-
-    public static void main(String[] args) {
-        String firstName = "Ian";
-        String lastName = "An";
-
-        VariablesAssignmentB x = new VariablesAssignmentB();
-        x.Title();
-        x.name1(firstName, lastName);
-        x.name2(lastName);
-    }
-}
diff --git a/src/docs/Ian An - Variables review.pdf b/src/docs/Ian An - Variables review.pdf
new file mode 100644
index 0000000..6b8fd2b
Binary files /dev/null and b/src/docs/Ian An - Variables review.pdf differ