first commit

Lecture Notes/src/Week2/InClassExercise1/Course.java

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+package Week2.InClassExercise1;
+
+import java.util.ArrayList;
+
+public class Course {
+    private ArrayList<Section> sections = new ArrayList<>();
+    private String prefix;
+    private int courseNumber;
+
+    public void display() {
+
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        return false;
+    }
+}

Lecture Notes/src/Week2/InClassExercise1/Person.java

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+package Week2.InClassExercise1;
+
+
+public class Person {
+
+    private String name;
+
+}

Lecture Notes/src/Week2/InClassExercise1/Section.java

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+package Week2.InClassExercise1;
+
+import java.util.ArrayList;
+
+public class Section {
+
+    private ArrayList<Person> students = new ArrayList<>();
+    private String classroom;
+
+    public int numStudents() {
+        return 0;
+    }
+
+    public void display() {
+
+    }
+}

Lecture Notes/src/Week2/InClassExercise1/Student.java

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+package Week2.InClassExercise1;
+
+import java.util.ArrayList;
+
+public class Student {
+
+    private ArrayList<Integer> quizzes = new ArrayList<>();
+
+    public double quizAverage() {
+        return 0.0;
+    }
+
+    public void display(){
+
+    }
+}

Lecture Notes/src/Week2/InClassExercise1/Teacher.java

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+package Week2.InClassExercise1;
+
+public class Teacher extends Person {
+
+    public double salary;
+
+    public double calculateTaxes() {
+        return 0.0;
+    }
+}