Lesson 05

src/main/java/lessons/lesson05/educationCentre/Course.java

@@ -0,0 +1,59 @@
+package lessons.lesson05.educationCentre;
+
+import java.util.ArrayList;
+
+public class Course {
+    private String name;
+    private String teacher;
+    private ArrayList<Student> student = new ArrayList<>();
+    private ArrayList<Student> attendanceJournal = new ArrayList<>();
+
+    public String getName() {
+        return name;
+    }
+
+    public String getTeacher() {
+        return teacher;
+    }
+
+    public void setTeacher(String teacher) {
+        this.teacher = teacher;
+    }
+
+    public Course(String name, String teacher) {
+        this.name = name;
+        this.teacher = teacher;
+    }
+
+    public void addStudent(Student s) {
+        for (Student student1 : student) {
+            if (student1.getEmail().equals(s.getEmail())) {
+                System.out.println("This student is already studying!");
+                return;
+            }
+        }
+        student.add(s);
+    }
+
+    public void recordAttendance(Student s, boolean present) {
+        if (s.getEnrolledCourse().equals(name) && present) {
+            attendanceJournal.add(s);
+            System.out.println(s.getName() + " has attended!");
+        } else {
+            System.out.println(s.getName() + " was absent.");
+        }
+    }
+
+    public void recordGrade(Student s, double grade) {
+        s.setGrades(grade);
+        System.out.println("Teacher set grade " + grade + " for " + s.getName());
+    }
+
+    public void showStudents() {
+        System.out.println("The list of attendants of " + name + " course:");
+        for (Student student1 : student) {
+            student1.studentInfo();
+        }
+        System.out.println();
+    }
+}

src/main/java/lessons/lesson05/educationCentre/MainEducation.java

@@ -0,0 +1,29 @@
+package lessons.lesson05.educationCentre;
+
+public class MainEducation {
+    public static void main(String[] args) {
+        Teacher teacher = new Teacher("Yevgeny", 2309, "yevgeny@uzum.com");
+        Course java = new Course("Java Junior", "none");
+        Student student = new Student("Feruz", 25091, "feruz@uzum.com", "", 0);
+        Student student1 = new Student("Matvey", 25092, "matvey@uzum.com", java.getName(), 0);
+
+        student.enroll(java);
+        java.addStudent(student1);
+        java.showStudents();
+        System.out.println();
+
+        student.attendCourse(java);
+        java.recordAttendance(student, true);
+        System.out.println();
+
+        teacher.assignCourse(java);
+        teacher.gradeStudent(student, java, 100.0);
+        java.showStudents();
+
+        Student student2 = new Student("Feruz", 25091, "feruz@uzum.com", "", 0);
+        java.addStudent(student2);
+        java.showStudents();
+
+
+    }
+}

src/main/java/lessons/lesson05/educationCentre/Person.java

@@ -0,0 +1,34 @@
+package lessons.lesson05.educationCentre;
+
+public abstract class Person {
+    private String name;
+    private int id;
+    private String email;
+
+    public Person(String name, int id, String email) {
+        this.name = name;
+        this.id = id;
+        this.email = email;
+    }
+
+    public String getInfo() {
+        return "Name: " + name + "\nID: " + id + "\nEmail: " + email;
+    }
+
+    public void introduce() {
+        System.out.println("Hello. My name is " + name);
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getId() {
+        return id;
+    }
+}
+

src/main/java/lessons/lesson05/educationCentre/Student.java

@@ -0,0 +1,39 @@
+package lessons.lesson05.educationCentre;
+
+public class Student extends Person {
+    private String enrolledCourse;
+    private double grades;
+
+    public String getEnrolledCourse() {
+        return enrolledCourse;
+    }
+
+    public double getGrades() {
+        return grades;
+    }
+
+    public void setGrades(double grades) {
+        this.grades = grades;
+    }
+
+    public Student(String name, int id, String email, String enrolledCourse, double grades) {
+        super(name, id, email);
+        this.enrolledCourse = enrolledCourse;
+        this.grades = grades;
+    }
+
+    public void enroll(Course course) {
+        enrolledCourse = course.getName();
+        System.out.println(this.getName() + " enrolled " + enrolledCourse);
+        course.addStudent(this);
+    }
+
+    public void attendCourse(Course course) {
+        System.out.println("I attended!");
+        course.recordAttendance(this, true);
+    }
+
+    public void studentInfo() {
+        System.out.println(getInfo());
+    }
+}

src/main/java/lessons/lesson05/educationCentre/Teacher.java

@@ -0,0 +1,28 @@
+package lessons.lesson05.educationCentre;
+
+public class Teacher extends Person {
+    private String specialization;
+
+    public Teacher(String name, int id, String email) {
+        super(name, id, email);
+    }
+
+    public void assignCourse(Course course) {
+        specialization = course.getName();
+        System.out.println(getName() + " is teacher of " + specialization);
+        course.setTeacher(this.getName());
+    }
+
+    public void gradeStudent(Student student, Course course, double grade) {
+        if (this.getName().equals(course.getTeacher())) {
+            if (student.getEnrolledCourse().equals(course.getName())) {
+                student.setGrades(grade);
+                course.recordGrade(student, grade);
+            } else {
+                System.out.println(student.getName() + " is not studing in this course!");
+            }
+        } else {
+            System.out.println(this.getName() + " is not teaching this course");
+        }
+    }
+}

src/main/java/lessons/lesson05/onlineQuiz/MainQuiz.java

@@ -0,0 +1,22 @@
+package lessons.lesson05.onlineQuiz;
+
+public class MainQuiz {
+    public static void main(String[] args) {
+        Quiz quiz = new Quiz("Java Basics");
+        quiz.addQuestion(new MultipleChoiceQuestion("What is JVM?", "Java virtual machine", 10));
+        quiz.addQuestion(new MultipleChoiceQuestion("What is the main purpose of the JVM?", "Execution", 10));
+        quiz.addQuestion(new MultipleChoiceQuestion("What concept allows one class to inherit from another?", "Inheritance", 10));
+        quiz.addQuestion(new MultipleChoiceQuestion("What keyword creates an instance of a class?", "New", 10));
+        quiz.addQuestion(new MultipleChoiceQuestion("Which keyword is used to inherit a class in Java?\nA) implement\nB) inherits\nC) extends\nD) import", "C", 5));
+
+        Team team = new Team("LABUBU", 0);
+        Team team1 = new Team("SPINER", 0);
+
+        quiz.addTeam(team);
+        quiz.addTeam(team1);
+
+        quiz.startQuiz();
+
+        quiz.showResults();
+    }
+}

src/main/java/lessons/lesson05/onlineQuiz/MultipleChoiceQuestion.java

@@ -0,0 +1,31 @@
+package lessons.lesson05.onlineQuiz;
+
+import java.util.ArrayList;
+
+public class MultipleChoiceQuestion extends Question {
+    private ArrayList<String> options = new ArrayList<>();
+
+    public MultipleChoiceQuestion(String text, String correctAnswer, int points) {
+        super(text, points);
+        setCorrectAnswer(correctAnswer);
+    }
+
+    @Override
+    public void ask() {
+        System.out.println("Answer for this question: " + getText() + "\nYou need to choose only one answer. (A-D)");
+    }
+
+    @Override
+    public boolean checkAnswer(String answer) {
+        return getCorrectAnswer().equalsIgnoreCase(answer);
+    }
+
+//    public ArrayList<String> getOptions() {
+//        return options;
+//    }
+//
+//    public void setOptions(ArrayList<String> options) {
+//        this.options = options;
+//    }
+}
+

src/main/java/lessons/lesson05/onlineQuiz/Question.java

@@ -0,0 +1,44 @@
+package lessons.lesson05.onlineQuiz;
+
+public abstract class Question {
+    private String text;
+    private String correctAnswer;
+    private int points;
+
+    public Question(String text, int points) {
+        this.text = text;
+        this.points = points;
+    }
+
+    public void ask() {
+        System.out.println("Answer for this question: " + text);
+    }
+
+    public boolean checkAnswer(String answer) {
+        return correctAnswer.equalsIgnoreCase(answer);
+    }
+
+    public int getPoints() {
+        return points;
+    }
+
+    public void setPoints(int points) {
+        this.points = points;
+    }
+
+    public String getText() {
+        return text;
+    }
+
+    public String getCorrectAnswer() {
+        return correctAnswer;
+    }
+
+    public void setCorrectAnswer(String correctAnswer) {
+        this.correctAnswer = correctAnswer;
+    }
+
+    public void setText(String text) {
+        this.text = text;
+    }
+}

src/main/java/lessons/lesson05/onlineQuiz/Quiz.java

@@ -0,0 +1,68 @@
+package lessons.lesson05.onlineQuiz;
+
+import java.util.ArrayList;
+import java.util.Scanner;
+
+public class Quiz {
+    private String title;
+    private ArrayList<Question> questions = new ArrayList<>();
+    private ArrayList<Team> teams = new ArrayList<>();
+
+    public Quiz(String title) {
+        this.title = title;
+    }
+
+    public void addQuestion(Question question) {
+        questions.add(question);
+    }
+
+    public void addTeam(Team team) {
+        teams.add(team);
+    }
+
+    public void startQuiz() {
+        System.out.println("The Quiz of " + title + " is started! Two teams will be versus each other" + "\nEvery question has their individual points");
+        Scanner sc = new Scanner(System.in);
+
+        for (int q = 0; q < questions.size(); q++) {
+            Question question = questions.get(q);
+
+            for (int t = 0; t < teams.size(); t++) {
+
+                Team currentTeam = teams.get(t % teams.size());
+                System.out.println("Question " + q + " - answers team " + currentTeam.getName());
+
+                System.out.println(question.getText());
+                String answer = sc.nextLine().trim().toUpperCase();
+//                if (answer.isEmpty()) {
+//                    System.out.println("Please, input answer!");
+//                    continue;
+//                }
+
+                if (question.checkAnswer(answer)) {
+                    currentTeam.addScore(question.getPoints());
+                    System.out.println("Correct! " + currentTeam.getName() + " got " + question.getPoints() + " points!");
+                } else {
+                    System.out.println("Wrong! 0 points.");
+                }
+            }
+        }
+    }
+
+
+    public void showResults() {
+        System.out.println("\nQuiz results for " + "\"" + title + "\"");
+        int maxScore = 0;
+        for (Team team : teams) {
+            System.out.println("Team " + team.getName() + ": " + team.getScore() + " scores");
+            if (team.getScore() > maxScore) {
+                maxScore = team.getScore();
+            }
+        }
+        for (Team team : teams) {
+            if (team.getScore() == maxScore) {
+                System.out.println("The winner of " + "\"" + title + "\"" + " is " + team.getName());
+            }
+        }
+    }
+}

src/main/java/lessons/lesson05/onlineQuiz/Team.java

@@ -0,0 +1,32 @@
+package lessons.lesson05.onlineQuiz;
+
+import lessons.lesson05.educationCentre.Student;
+
+import java.util.ArrayList;
+
+public class Team {
+    private String name;
+    private ArrayList<Student> members = new ArrayList<>();
+    private int score;
+
+    public Team(String name, int score) {
+        this.name = name;
+        this.score = score;
+    }
+
+    public void addMember(Student student) {
+        members.add(student);
+    }
+
+    public void addScore(int points) {
+        score += points;
+    }
+
+    public int getScore() {
+        return score;
+    }
+
+    public String getName() {
+        return name;
+    }
+}