second commit

Main.java

@@ -105,12 +105,37 @@ public class Main {
 
     }
 
+    /**
+     * This class is a representation of an actual lab
+     * It holds some info about the lab and has some useful methods
+     */
     public static class Lab {
+        /**
+         * array of students in the lab
+         */
         private Student[] students;
+        /**
+         * the average of student's grades
+         */
         private int avg;
+        /**
+         * the day of the week on which each lab session is held
+         */
         private String day;
+        /**
+         * maximum number of students
+         */
         private int capacity;
+        /**
+         * current number of students
+         */
         private int currentSize;
+
+        /**
+         * constructs a new lab
+         * @param capacity lab's capacity
+         * @param day the day of the week on which each lab session is held
+         */
         public Lab(int capacity, String day) {
             students = new Student[capacity];
             this.capacity = capacity;
@@ -118,12 +143,21 @@ public class Main {
             currentSize = 0;
             avg = 0;
         }
+
+        /**
+         * adds the new kid(student) to our lab if possible
+         * @param std the new kid
+         */
         public void enrollStudent(Student std) {
             if (currentSize < capacity)
                 students[currentSize++] = std;
             else
                 System.out.println("Lab is full!!!");
         }
+
+        /**
+         * prints a list of the students to standard output
+         */
         public void print() {
             for (int i = 0; i < currentSize; i++) {
                 System.out.print((i + 1) + ". ");
@@ -131,31 +165,65 @@ public class Main {
             }
 
         }
+
+        /**
+         * @return the students array
+         */
         public Student[] getStudents() {
             return students;
         }
+
+        /**
+         * adds the new kids(students) to our lab one by one;
+         * @param students the new kids
+         */
         public void setStudents(Student[] students) {
             for(Student si: students)
                 enrollStudent(si);
         }
+
+        /**
+         * @return the average of student's grades
+         */
         public int getAvg() {
             return avg;
         }
+
+        /**
+         * sets the avg field to what it should be
+         */
         public void calculateAvg() {
             int sum = 0;
             for(int i = 0; i < currentSize; i++)
                 sum += students[i].getGrade();
             avg = sum / currentSize;
         }
+
+        /**
+         * @return the day of the week on which each lab session is held
+         */
         public String getDay() {
             return day;
         }
+
+        /**
+         * sets the value of day field
+         * @param day the new day of the week on which each lab session is held
+         */
         public void setDay(String day) {
             this.day = day;
         }
+
+        /**
+         * @return the capacity of the lab
+         */
         public int getCapacity() {
             return capacity;
         }
+
+        /**
+         * @param capacity the new capacity
+         */
         public void setCapacity(int capacity) {
             this.capacity = capacity;
         }