Shadi A.

task-1/com.hyfacademy/Main.java

@@ -1,6 +1,9 @@
+package com.hyfacademy;
+import com.hyfacademy.service.GradeService;
 public class Main {
     public static void main(String[] args) {
-        System.out.println("Hello World!");
+        GradeService service = new GradeService();
+        service.run();
     }
 }
 

task-1/com.hyfacademy/model/Student.java

@@ -0,0 +1,43 @@
+package com.hyfacademy.model;
+
+import com.hyfacademy.util.GradeUtils;
+public class Student {
+
+	private String name;
+	private String studentId;
+	private int[]  grades;
+
+	private static int totalStudents = 0;
+
+	public Student(String name, String  studentId) {
+        	this.name = name;
+		this.studentId = studentId;
+		this.grades = new int[GradeUtils.MODULE_COUNT];
+		totalStudents++;
+	}
+	 public String getName()  { return name; }
+   	 public String    getStudentId()   { return studentId; }
+   	 public int[]  getGrades() { return grades.clone(); }
+	 public void setGrade(int moduleIndex, int grade) {
+    			if (moduleIndex < 0 || moduleIndex >= GradeUtils.MODULE_COUNT || grade < 0 || grade > 100) {
+        		System.out.println("Invalid grade or module index. Module index must be 0-4 and grade must be 0-100.");
+        		return;
+    		}
+
+    		this.grades[moduleIndex] = grade;
+	}
+	public static int getTotalStudents() {
+		return totalStudents;
+	}
+	@Override
+	public String toString() {
+        double average = GradeUtils.calculateAverage(grades);
+        String status = GradeUtils.isPassing(average) ? "PASS" : "FAIL";
+
+        return String.format("[%s] %s — Avg: %.2f — %s",
+                studentId,
+                name,
+                average,
+                status);
+	}
+}

task-1/com.hyfacademy/service/GradeService.java

@@ -0,0 +1,189 @@
+package com.hyfacademy.service;
+import com.hyfacademy.model.Student;
+import java.util.Scanner;
+import com.hyfacademy.util.GradeUtils;
+
+public class GradeService{
+	private static final int MAX_STUDENTS = 20;
+	private Student[] students;
+	private int studentCount;
+	private final Scanner scanner;
+	public GradeService() {
+        this.students = new Student[MAX_STUDENTS];
+	this.studentCount = 0;
+	this.scanner = new Scanner(System.in);
+	}
+	public void addStudent() {
+		if (studentCount >= students.length) {
+			System.out.println("Student list is full!");
+			return;
+		}
+		System.out.print("Enter student name: ");
+		String name = scanner.nextLine();
+		if (name.isEmpty()) {
+			System.out.println("Invalid name");
+			return;
+		}
+		Student student = new Student(name, generateStudentId());
+		students[studentCount++] = student;
+		System.out.println("Added: " + student.getStudentId());
+	}
+	private String generateStudentId() {
+		return String.format("HYF-%03d", studentCount + 1);
+	}
+	public void enterGrades() {
+	       	if (studentCount == 0) {
+			System.out.println("No students have been added yet.");
+			return;
+		}
+		System.out.print("Enter student ID: ");
+		String studentId = scanner.nextLine();
+		Student student = findStudentById(studentId);
+		if (student == null) {
+			System.out.println("Student not found.");
+			return;
+		}
+
+	       for (int i = 0; i < GradeUtils.MODULE_COUNT; i++) {
+		       int grade = readIntInRange(
+				       "Enter grade for " + GradeUtils.getModuleName(i) + ": ",
+				       0,
+				       100
+		       );
+		       student.setGrade(i, grade);
+	       }
+	       System.out.println("Grades added for " + student.getName());
+	}
+	public void viewAllStudents() {
+	       	if (studentCount == 0) {
+			System.out.println("No students have been added yet.");
+			return;
+		}
+		int passingCount = 0;
+		int failingCount = 0;
+		System.out.println("══════════════════════════════════════════════════════════════");
+		System.out.printf("  %-10s %-24s %7s   %5s   %6s%n", "ID", "NAME", "AVERAGE", "GRADE", "STATUS");
+		System.out.println("══════════════════════════════════════════════════════════════");
+		for (int i = 0; i < studentCount; i++) {
+			Student s = students[i];
+
+			double avg = GradeUtils.calculateAverage(s.getGrades());
+			String letter = GradeUtils.getLetterGrade(avg);
+			boolean isPass = GradeUtils.isPassing(avg);
+			if (isPass) passingCount++;
+			else failingCount++;
+
+			System.out.printf(  "  %-10s %-24s %7.2f   %5s   %6s%n",
+    				s.getStudentId(),
+    				s.getName(),
+   		 		avg,
+    				letter,
+    				isPass ? "PASS" : "FAIL"
+				);
+		}
+		System.out.println("══════════════════════════════════════════════════════════════");
+		System.out.printf("  Total students: %d   Passing: %d   Failing: %d%n", studentCount, passingCount, failingCount);
+		System.out.println("══════════════════════════════════════════════════════════════");
+	}
+	public void viewStudentReport(){
+		if (studentCount == 0){
+			System.out.println("No students have been added yet.");
+			return;
+		}
+		System.out.print("Enter student ID: ");
+		String studentId = scanner.nextLine();
+
+		Student s =findStudentById(studentId);
+		if(s == null) {
+			System.out.println("Student not found");
+			return;
+		}
+		int[] grades = s.getGrades();
+		System.out.println("══════════════════════════════════════");
+		System.out.println("  STUDENT REPORT");
+		System.out.println("══════════════════════════════════════");
+		System.out.printf("  ID      : %s%n", s.getStudentId());
+		System.out.printf("  Name    : %s%n", s.getName());
+		System.out.println("──────────────────────────────────────");
+		System.out.println("  MODULE GRADES");
+		System.out.println("──────────────────────────────────────");
+
+		for (int i = 0; i < GradeUtils.MODULE_COUNT; i++) {
+			int grade = grades[i];
+			String moduleName = GradeUtils.getModuleName(i);
+			boolean pass = GradeUtils.isModulePassing(grade);
+
+			System.out.printf(
+    				"  %-22s : %s   %s%n",
+    				moduleName,
+    				GradeUtils.formatGrade(grade),
+   	 			pass ? "PASS" : "FAIL"
+				);
+		}
+		System.out.println("──────────────────────────────────────");
+		double avg = GradeUtils.calculateAverage(grades);
+		String letter = GradeUtils.getLetterGrade(avg);
+		boolean isPass = GradeUtils.isPassing(avg);
+
+		    System.out.printf("  Average  : %6.2f%n", avg);
+		    System.out.printf("  Grade    : %s%n", letter);
+		    System.out.printf("  Status   : %s%n", isPass ? "✓ PASS" : "✗ FAIL");
+		    System.out.println("══════════════════════════════════════");
+	}
+	private Student findStudentById(String id) {
+
+		for (int i = 0; i < studentCount; i++) { 
+			if (students[i].getStudentId().equalsIgnoreCase(id)) {
+				return students[i];
+			}
+		}
+		return null;
+	}
+	public void run() {
+		String input;
+		do {
+			printMenu();
+			input = scanner.nextLine().trim();
+			switch (input) {
+			       	case "1" -> addStudent();
+				case "2" -> enterGrades();
+				case "3" -> viewAllStudents();
+				case "4" -> viewStudentReport();
+				case "5" -> System.out.println("Goodbye!");
+				default -> System.out.println("Invalid option.");
+			}
+			System.out.println();
+		}
+		while (!input.equals("5"));
+	}
+	private void printMenu() {
+		System.out.println("╔══════════════════════════════════════╗");
+		System.out.println("║         HYF ACADEMY — GRADE MGR      ║");
+		System.out.println("╚══════════════════════════════════════╝");
+		System.out.println("  1. Add student");
+		System.out.println("  2. Enter grades");
+		System.out.println("  3. View all students");
+		System.out.println("  4. View student report");
+		System.out.println("  5. Exit");
+		System.out.println("══════════════════════════════════════");
+		System.out.print("Choose an option: ");
+
+	}
+
+	private int readIntInRange(String prompt, int minInclusive, int maxInclusive) {
+		while (true) {
+			System.out.print(prompt);
+			String raw = scanner.nextLine().trim();
+			try {
+				int value = Integer.parseInt(raw);
+				if (value < minInclusive || value > maxInclusive) {
+					System.out.printf("Invalid grade. Enter a number between %d and %d.%n", minInclusive, maxInclusive);
+					continue;
+				}
+				return value;
+			} catch (NumberFormatException e) {
+				System.out.println("Invalid input. Please enter a number.");
+			}
+		}
+	}
+}

task-1/com.hyfacademy/util/GradeUtils.java

@@ -0,0 +1,66 @@
+package com.hyfacademy.util;
+
+public class GradeUtils {
+	public static final int MODULE_PASS_MARK = 55;
+	public static final double TRACK_PASS_AVERAGE = 60.0;
+	public static final int MODULE_COUNT = 5;
+
+	public static final String[] MODULE_NAMES = {
+			"Java Basics",
+			"Control Flow",
+			"OOP Fundamentals",
+			"Arrays & Collections",
+			"Input & Output"
+	};
+
+	private GradeUtils() {}
+
+	public static double calculateAverage(int[] grades) {
+		if (grades == null || grades.length == 0) {
+			return 0.0;
+		}
+
+		int sum = 0;
+		int gradedCount = 0;
+
+		for (int grade : grades) {
+			if (grade > 0) {
+				sum += grade;
+				gradedCount++;
+			}
+		}
+
+		if (gradedCount == 0) {
+			return 0.0;
+		}
+
+		return (double) sum / gradedCount;
+	}
+
+	public static boolean isPassing(double average) {
+		return average >= TRACK_PASS_AVERAGE;
+	}
+
+	public static boolean isModulePassing(int grade) {
+		return grade >= MODULE_PASS_MARK;
+	}
+
+	public static String getLetterGrade(double average) {
+		if (average >= 90.0) return "A";
+		if (average >= 80.0) return "B";
+		if (average >= 70.0) return "C";
+		if (average >= 60.0) return "D";
+		return "F";
+	}
+
+	public static String formatGrade(int grade) {
+		return String.format("%3d", grade);
+	}
+
+	public static String getModuleName(int index) {
+		if (index < 0 || index >= MODULE_NAMES.length) {
+			return "Unknown Module";
+		}
+		return MODULE_NAMES[index];
+	}
+}