lab-2

Lab.java

+package com.company;
+
+public class Lab {
+    private int dayOfTheWeek;
+    private int currenCapacity = 0 ;
+    private int capacity;
+    Student [] students;
+    public Lab(int capacity , int dayOfTheWeek){
+        this.capacity = capacity;
+        students = new Student[capacity];
+    }
+    public void enrollStudent(Student std){
+        if(currenCapacity<capacity){
+            students[currenCapacity] = std;
+            currenCapacity++;
+        }
+    }
+    public float getAverage(){
+        int i;
+        float sum = 0;
+        for(i=0;i<capacity;i++){
+            sum = sum + students[i].getGrade();
+        }
+        float m = sum/capacity;
+        return m;
+    }
+}

Main.java

+package com.company;
+
+public class Main {
+
+    public static void main(String[] args) {
+        Student s1 = new Student("Fatemeh" , "Ahmadzadeh" , "9731001");
+        s1.setGrade(17);
+        if(s1.getFirstName()=="Fatemeh");
+            System.out.println("true");
+        Student s2 = new Student("Zahra" , "Ahmadzadeh" , "9731010");
+        s2.setGrade(18);
+        Lab test1 = new Lab(2, 1);
+        test1.enrollStudent(s1);
+        test1.enrollStudent(s2);
+        float miangin = test1.getAverage();
+        System.out.println(miangin);
+    }
+}

Student.java

+package com.company;
+
+public class Student {
+    private String firstName;
+    private String lastName;
+    private String studentNo;
+    private float grade;
+    public void setFirstName(String firstName){
+        this.firstName = firstName;
+    }
+    public void setLastName(String lastName){
+        this.lastName = lastName;
+    }
+    public void setStudentNO(String studentNo){
+        this.studentNo = studentNo;
+    }
+    public void setGrade(float grade){
+        this.grade = grade;
+    }
+    public Student(String firstName,String lastName,String studentNo){}
+    public String getFirstName(){
+        return "";
+    }
+    public float getGrade(){
+        return grade;
+    }
+}