Classes pt 2 Excercise

quecoder · quecoder · commit 48d90e7403f7 · 2024-01-02T21:01:29.000-06:00
diff --git a/classes-part-2/exercises/src/main/java/org/launchcode/Course.java b/classes-part-2/exercises/src/main/java/org/launchcode/Course.java
@@ -3,15 +3,39 @@
 import java.util.ArrayList;
 
 public class Course {
-    private String topic;
-    private Teacher instructor;
-    private ArrayList<Student> enrolledStudents;
+    private final String topic;
+    private final Teacher instructor;
+    private final ArrayList<Student> enrolledStudents;
+
+    public Course(String topic, Teacher instructor, ArrayList<Student> enrolledStudents) {
+        this.topic = topic;
+        this.instructor = instructor;
+        this.enrolledStudents = enrolledStudents;
+    }
 
     // TODO: Add your custom 'toString' method here. Make sure it returns a well-formatted String rather than
     //  just the class fields.
+    public String toString() {
+        return "Course = " + topic + " / Instructor = " + instructor +
+                " / Students = " + enrolledStudents;
+    }
 
 
     // TODO: Add your custom 'equals' method here. Consider which fields should match in order to call two
     //  Course objects equal.
-
+    public boolean equals(Object toBeCompared) {
+        if (toBeCompared == this) {
+            return true;
+        }
+        if (toBeCompared == null) {
+            return false;
+        }
+        if (toBeCompared.getClass() != getClass()) {
+            return false;
+        }
+        Course course = (Course) toBeCompared;
+        return topic.equals(course.topic) &&
+                instructor.equals(course.instructor) &&
+                enrolledStudents.equals(course.enrolledStudents);
+    }
 }
diff --git a/classes-part-2/exercises/src/main/java/org/launchcode/Student.java b/classes-part-2/exercises/src/main/java/org/launchcode/Student.java
@@ -30,20 +30,55 @@ public String studentInfo() {
 
 
     //TODO: Uncomment and complete the getGradeLevel method here:
-//    public String getGradeLevel() {
-//        // Determine the grade level of the student based on numberOfCredits
-//    }
+    public static String getGradeLevel(int credits) {
+        if (credits <= 29){
+            return "freshman";
+        } else if (credits <= 59){
+            return "sophomore";
+        } else if (credits <= 89) {
+            return "junior";
+        } else {
+            return "senior";
+        }
+    }
 
     // TODO: Complete the addGrade method.
     public void addGrade(int courseCredits, double grade) {
-        // Update the appropriate fields: numberOfCredits, gpa
+        // Calculate quality score for the new course
+        double qualityScore = grade * courseCredits;
+
+        // Update total quality score and number of credits
+        double totalQualityScore = this.gpa * this.numberOfCredits;
+        totalQualityScore += qualityScore;
+        this.numberOfCredits += courseCredits;
+
+        // Calculate new GPA
+        this.gpa = totalQualityScore / this.numberOfCredits;
     }
 
     // TODO: Add your custom 'toString' method here. Make sure it returns a well-formatted String rather
     //  than just the class fields.
+    public String toString() {
+        return "Student = " + name + " / ID = " + studentId +
+                " / Credits = " + numberOfCredits + " / GPA = " + gpa;
+    }
 
     // TODO: Add your custom 'equals' method here. Consider which fields should match in order to call two
     //  Student objects equal.
+    public boolean equals(Object toBeCompared) {
+        if (toBeCompared == this) {
+            return true;
+        }
+        if (toBeCompared == null) {
+            return false;
+        }
+        if (toBeCompared.getClass() != getClass()) {
+            return false;
+        }
+        Student theStudent = (Student) toBeCompared;
+        return theStudent.getStudentId() == getStudentId();
+    }
+
 
     public String getName() {
         return name;
