diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..61069b7a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/.idea/*
\ No newline at end of file
diff --git a/homework-java/pom.xml b/homework-java/pom.xml
new file mode 100644
index 00000000..55057c41
--- /dev/null
+++ b/homework-java/pom.xml
@@ -0,0 +1,31 @@
+
+
+ 4.0.0
+
+ com.example
+ homework-java
+ 1.0-SNAPSHOT
+
+
+ 21
+ 21
+ UTF-8
+
+
+
+ org.junit.jupiter
+ junit-jupiter-engine
+ 5.9.2
+
+
+ org.junit.jupiter
+ junit-jupiter-api
+ 5.9.2
+
+
+
+
+
+
\ No newline at end of file
diff --git a/homework-java/src/main/java/com/example/CommandHandler.java b/homework-java/src/main/java/com/example/CommandHandler.java
new file mode 100644
index 00000000..2c396f64
--- /dev/null
+++ b/homework-java/src/main/java/com/example/CommandHandler.java
@@ -0,0 +1,189 @@
+package com.example;
+import java.util.*;
+
+public class CommandHandler {
+ private List students;
+ private List teachers;
+ private List courses;
+
+ final String ROJO = "\u001B[31m";
+ final String RESET = "\u001B[0m";
+
+ public CommandHandler(List students, List courses, List teachers) {
+ this.students = students;
+ this.courses = courses;
+ this.teachers = teachers;
+ }
+
+ public boolean executeCommand(String wholeCommand){
+ String[] commandPart = wholeCommand.split(" ");
+ String command = commandPart[0];
+ switch (command){
+ case "ENROLL":
+ enrollStudent(commandPart[1],commandPart[2]);
+ return true;
+ case "ASSIGN":
+ assignTeacher(commandPart[1],commandPart[2]);
+ return true;
+ case "SHOW":
+ //System.out.println(command);
+ handleShow(commandPart);
+ return true;
+ case "LOOKUP":
+ lookUp(commandPart);
+ return true;
+ default:
+ System.out.println("β Not a command.");
+ return false;
+ }
+ }
+
+ public Student findStudentById(String student_id){
+ Student student = null;
+ for(Student s: students){
+ if(s.getStudentId().equals(student_id)){
+ student = s;
+ return student;
+ }
+ }
+ return null;
+ }
+
+ public Course findCourseById(String course_id){
+ Course course = null;
+ for(Course c: courses){
+ if(c.getCourseId().equals(course_id)){
+ course = c;
+ return course;
+ }
+ }
+ return null;
+ }
+
+ public Teacher findTeacherById(String teacher_id){
+ Teacher teacher = null;
+ for(Teacher t: teachers){
+ if(t.getTeacherId().equals(teacher_id)){
+ teacher = t;
+ return teacher;
+ }
+ }
+ return null;
+ }
+
+ private void lookUp(String[] commandPart) {
+ switch (commandPart[1]){
+ case "COURSE":
+ Course course = findCourseById(commandPart[2]);
+ if (course != null)
+ System.out.println(course.toString());
+ else
+ System.out.println("Course not found.");
+ break;
+ case "STUDENT":
+ Student student = findStudentById(commandPart[2]);
+ if (student != null)
+ System.out.println(student.toString());
+ else
+ System.out.println("Student not found.");
+ break;
+ case "TEACHER":
+ Teacher teacher = findTeacherById(commandPart[2]);
+ if (teacher != null)
+ System.out.println(teacher.toString());
+ else
+ System.out.println("Teacher not found.");
+ break;
+ }
+ }
+
+ private void enrollStudent(String student_id, String course_id) {
+ Student student = findStudentById(student_id);
+ Course course = findCourseById(course_id);
+
+ if (student != null && course!= null) {
+ student.setCourse(course);
+ updateMoneyEarned(course);
+ System.out.println(student.toString());
+ } else {
+ System.out.println("Couldn't assign the course");
+ }
+
+ }
+
+ public void assignTeacher(String teacher_id, String course_id){
+ Teacher teacher = findTeacherById(teacher_id);
+ Course course = findCourseById(course_id);
+
+ if (teacher != null && course!=null){
+ course.setTeacher(teacher);
+ System.out.println(course.toString());
+ }else {
+ System.out.println("Couldn't assign the course");
+ }
+ }
+
+ private void updateMoneyEarned(Course course){
+ double total = course.getMoney_earned() + course.getPrice();
+ course.setMoney_earned(total);
+ }
+
+ private void handleShow(String[] command) {
+ //System.out.println(Arrays.toString(command) + "del handle");
+ switch (command[1].toUpperCase()){
+ case "COURSES":
+ showCourses();
+ break;
+ case "STUDENTS":
+ showStudents();
+ break;
+ case "TEACHERS":
+ showTeachers();
+ break;
+ case "PROFIT":
+ showProfit();
+ break;
+ }
+ }
+
+ private void showStudents() {
+ //System.out.println("llego a show students");
+ StringBuilder studentsString = new StringBuilder();
+ for (Student student: students){
+ studentsString.append(student.toString()).append("\n");
+ }
+ // System.out.println("Student usando el toString() es:");
+ System.out.println(studentsString);
+ }
+
+ private void showTeachers() {
+ StringBuilder teachersString = new StringBuilder();
+ for (Teacher teacher: teachers){
+ teachersString.append(teacher.toString()).append("\n");
+ }
+ System.out.println(teachersString);
+ }
+
+ private void showProfit() {
+ double totalEarned = courses.stream().mapToDouble(Course::getMoney_earned).sum();
+ double totalSalaries = teachers.stream().mapToDouble(Teacher::getSalary).sum();
+
+
+ System.out.println(ROJO + "===== FINANCIAL REPORT =====" + RESET);
+ System.out.println("Total income from courses: $" + totalEarned);
+ System.out.println("Total expenses (teachers' salaries): $" + totalSalaries);
+ System.out.println("------------------------------");
+ System.out.printf("Net profit: $%.2f%n", (totalEarned - totalSalaries));
+ System.out.println(ROJO +"==============================" + RESET);
+ }
+
+ private void showCourses() {
+ StringBuilder coursesString = new StringBuilder();
+ for (Course course: courses){
+ coursesString.append(course.toString()).append("\n");
+ }
+ System.out.println(coursesString);
+ }
+
+
+}
diff --git a/homework-java/src/main/java/com/example/Course.java b/homework-java/src/main/java/com/example/Course.java
new file mode 100644
index 00000000..89d2e492
--- /dev/null
+++ b/homework-java/src/main/java/com/example/Course.java
@@ -0,0 +1,96 @@
+package com.example;
+
+import java.util.HashSet;
+import java.util.Random;
+import java.util.Set;
+import java.util.UUID;
+
+public class Course {
+ private static final Set usedIds = new HashSet<>();
+
+ private String courseId;
+ private String name;
+ private double price;
+ private double money_earned;
+ private Teacher teacher;
+
+ //constructor de name y price
+ public Course(String name, double price) {
+ this.courseId = generateUniqueCourseId();
+ this.name = name;
+ this.price = price;
+ }
+ //Constructor vacio con id
+
+ public Course() {
+ this.courseId = generateUniqueCourseId();
+ }
+
+ private String generateUniqueCourseId() {
+ String id;
+ Random random = new Random();
+ do {
+ int number = random.nextInt(900) + 100;
+ id = "C" + number;
+ } while (usedIds.contains(id));
+
+ usedIds.add(id);
+ return id;
+ }
+
+ //getters y setters
+
+ public String getName() {
+ return name;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
+
+ public double getPrice() {
+ return price;
+ }
+
+ public void setPrice(double price) {
+ this.price = price;
+ }
+
+ public String getCourseId() {
+ return courseId;
+ }
+
+ public void setCourseId(String courseId) {
+ this.courseId = courseId;
+ }
+
+ public double getMoney_earned() {
+ return money_earned;
+ }
+
+ public void setMoney_earned(double money_earned) {
+ this.money_earned = money_earned;
+ }
+
+ public Teacher getTeacher() {
+ return teacher;
+ }
+
+ public void setTeacher(Teacher teacher) {
+ this.teacher = teacher;
+ }
+
+
+ @Override
+ public String toString() {
+ return String.format(
+ "π Course Info:\n" +
+ "π’ ID : %s\n" +
+ "π Name : %s\n" +
+ "π΅ Price : $%.2f\n" +
+ "π° Money Earned : $%.2f\n" +
+ "π¨βπ« Teacher : %s",
+ courseId, name, price, money_earned, teacher
+ );
+ }
+}
diff --git a/homework-java/src/main/java/com/example/Main.java b/homework-java/src/main/java/com/example/Main.java
new file mode 100644
index 00000000..182805d1
--- /dev/null
+++ b/homework-java/src/main/java/com/example/Main.java
@@ -0,0 +1,10 @@
+package com.example;
+
+//TIP To Run code, press or
+// click the icon in the gutter.
+public class Main {
+ public static void main(String[] args) {
+
+//comentario
+ }
+}
\ No newline at end of file
diff --git a/homework-java/src/main/java/com/example/Menu.java b/homework-java/src/main/java/com/example/Menu.java
new file mode 100644
index 00000000..4d262b8e
--- /dev/null
+++ b/homework-java/src/main/java/com/example/Menu.java
@@ -0,0 +1,185 @@
+package com.example;
+
+import java.sql.ResultSet;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Scanner;
+
+public class Menu {
+ private School school;
+ public static final String ROJO = "\u001B[31m";
+ public static final String RESET = "\u001B[0m";
+
+ public static void main(String[] args) {
+
+
+ Scanner myScanner = new Scanner(System.in);
+ System.out.println("Please, enter a name for the new school: ");
+ String schoolName = myScanner.nextLine();
+ var school = new School(schoolName);
+
+
+ System.out.println("Now, we need some "+ROJO+"TEACHER/S"+ RESET +" for your school " + schoolName + ". How wany teachers should be created? Please enter a number.");
+
+ int numberOfTeachers = 0;
+ boolean validInput = false;
+
+ while (!validInput) {
+ String input = myScanner.nextLine();
+ try {
+ numberOfTeachers = Integer.parseInt(input);
+ if (numberOfTeachers < 0) {
+ System.out.println("The number of teachers cannot be negative. Please enter a valid positive integer.");
+ } else {
+ validInput = true;
+ }
+ } catch (NumberFormatException e) {
+ System.out.println("Invalid input. Please enter a valid whole number (e.g., 3) for the number of teachers.");
+ }
+ }
+
+
+
+ for (int i = 0; i < numberOfTeachers; i++) {
+ System.out.println("\nEnter the details for teacher " + (i+1));
+
+ System.out.println("Name: ");
+ String name = myScanner.nextLine();
+
+ double salary = 0.0;
+ boolean validSalary = false;
+
+ while (!validSalary) {
+ System.out.println("Salary: ");
+ String salaryInput = myScanner.nextLine();
+
+ try {
+
+ salary = Double.parseDouble(salaryInput);
+
+ if (salary <= 0) {
+ System.out.println("Salary must be a positive number greater than 0. Please try again.");
+ } else {
+ validSalary = true;
+ }
+ } catch (NumberFormatException e) {
+ System.out.println("Invalid input. Please enter a valid number (e.g., 199.99 or 150) for the price.");
+ }
+
+ }
+
+ Teacher teacher = new Teacher(name, salary);
+ school.addTeacher(teacher);
+
+ System.out.println("Teacher " + (i+1) + " added.");
+ }
+ System.out.println(numberOfTeachers + "teachers created for " + schoolName);
+
+ System.out.println("Now, we need some "+ROJO+"COURSE/S"+ RESET + " How wany should be created? Please enter a number.");
+ int numberOfCourses = 0;
+ boolean validInput2 = false;
+
+ while (!validInput2) {
+ String input = myScanner.nextLine();
+ try {
+ numberOfCourses = Integer.parseInt(input);
+ if (numberOfCourses < 0) {
+ System.out.println("The number of courses cannot be negative. Please enter a valid positive integer.");
+ } else {
+ validInput2 = true;
+ }
+ } catch (NumberFormatException e) {
+ System.out.println("Invalid input. Please enter a valid whole number (e.g., 3) for the number of courses.");
+ }
+ }
+
+
+ for (int i = 0; i < numberOfCourses; i++) {
+ System.out.println("\nEnter the details for course " + (i+1));
+
+ System.out.println("Name: ");
+ String name = myScanner.nextLine();
+
+ double price = 0.0;
+ boolean validPrice = false;
+
+ while (!validPrice) {
+ System.out.println("Price: ");
+ String priceInput = myScanner.nextLine();
+
+ try {
+ price = Double.parseDouble(priceInput);
+
+ if (price <= 0) {
+ System.out.println("Price must be a positive number greater than 0. Please try again.");
+ } else {
+ validPrice = true;
+ }
+ } catch (NumberFormatException e) {
+ System.out.println("Invalid input. Please enter a valid number (e.g., 199.99 or 150) for the price.");
+ }
+ }
+
+ Course course = new Course(name, price);
+ school.addCourse(course);
+
+ System.out.println("Course " + (i+1) + " added.");
+ }
+ System.out.println(numberOfCourses + "courses created for " + schoolName);
+
+ System.out.println("Let's create the "+ROJO+"STUDENTS/S"+RESET+". How many should be created? Please enter a number.");
+ int numberOfStudents = 0;
+ boolean validInput3 = false;
+
+ while (!validInput3) {
+ String input = myScanner.nextLine();
+ try {
+ numberOfStudents = Integer.parseInt(input);
+ if (numberOfStudents < 0) {
+ System.out.println("The number of students cannot be negative. Please enter a valid positive integer.");
+ } else {
+ validInput3 = true;
+ }
+ } catch (NumberFormatException e) {
+ System.out.println("Invalid input. Please enter a valid whole number (e.g., 3) for the number of students.");
+ }
+ }
+
+
+ for (int i = 0; i < numberOfStudents; i++) {
+ System.out.println("\nEnter the details for student " + (i+1));
+
+ System.out.println("Name: ");
+ String name = myScanner.nextLine();
+
+ System.out.println("Address: ");
+ String address = myScanner.nextLine();
+
+ System.out.println("Email: ");
+ String email = myScanner.nextLine();
+
+ Student student = new Student(name, address, email);
+ school.addStudent(student);
+
+ System.out.println("Student " + (i+1) + " added.");
+ }
+ System.out.println(numberOfStudents + "students created for " + schoolName);
+
+ //comandos
+ boolean continueRunning = true;
+ while (continueRunning) {
+ System.out.println("Enter a command from the next list: \n ENROLL [STUDENT_ID] [COURSE_ID] \n ASSIGN [TEACHER_ID] [COURSE_ID] \n SHOW COURSES \n LOOKUP COURSE [COURSE_ID] \n SHOW STUDENTS \n LOOKUP STUDENT [STUDENT_ID] \n SHOW TEACHERS \n LOOKUP TEACHER [TEACHER_ID] \n SHOW PROFIT ");
+ var input = myScanner.nextLine().toUpperCase();
+
+ CommandHandler commandHandler = new CommandHandler (school.getStudents(), school.getCourses(), school.getTeachers());
+ boolean validCommand = commandHandler.executeCommand(input);
+ if (!validCommand) {
+ System.out.println("Press any key to try it again...");
+ myScanner.nextLine(); // Espera que el usuario pulse algo
+ continue; // vuelve al principio del while
+ }
+
+
+ }
+ }
+}
\ No newline at end of file
diff --git a/homework-java/src/main/java/com/example/School.java b/homework-java/src/main/java/com/example/School.java
new file mode 100644
index 00000000..6f953dd0
--- /dev/null
+++ b/homework-java/src/main/java/com/example/School.java
@@ -0,0 +1,41 @@
+package com.example;
+import java.util.ArrayList;
+import java.util.List;
+
+public class School {
+ private String name;
+ private List teachers;
+ private List students;
+ private List courses;
+
+ public School(String name) {
+ this.name = name;
+ this.teachers = new ArrayList<>();
+ this.students = new ArrayList<>();
+ this.courses = new ArrayList<>();
+ }
+ public void addTeacher (Teacher teacher){
+ teachers.add(teacher);
+ }
+ public List getTeachers () {
+ return teachers;
+ }
+
+
+ public void addCourse (Course course){
+ courses.add(course);
+ }
+ public List getCourses () {
+ return courses;
+ }
+
+
+ public void addStudent (Student student){
+ students.add(student);
+ }
+ public List getStudents () {
+ return students;
+ }
+
+}
+
diff --git a/homework-java/src/main/java/com/example/Student.java b/homework-java/src/main/java/com/example/Student.java
new file mode 100644
index 00000000..b61ca413
--- /dev/null
+++ b/homework-java/src/main/java/com/example/Student.java
@@ -0,0 +1,90 @@
+package com.example;
+import java.util.HashSet;
+import java.util.Random;
+import java.util.Set;
+
+
+public class Student {
+ private static final Set usedIds = new HashSet<>();
+
+ private final String studentId;
+ private String name;
+ private String address;
+ private String email;
+ private Course course;
+
+ public Student(String name,String address,String email) {
+ this.studentId = generateUniqueStudentId();
+ this.name = name;
+ this.address = address;
+ this.email = email;
+ this.course = null;
+ }
+
+ public Student(){
+ this.studentId = generateUniqueStudentId();
+ }
+
+ private String generateUniqueStudentId() {
+ String id;
+ Random random = new Random();
+ do {
+ int number = random.nextInt(900) + 100;
+ id = "S" + number;
+ } while (usedIds.contains(id));
+
+ usedIds.add(id);
+ return id;
+ }
+
+ public String getStudentId() {
+ return studentId;
+ }
+
+ public Course getCourse() {
+ return course;
+ }
+
+ public void setCourse(Course course) {
+ this.course = course;
+ }
+
+ public String getEmail() {
+ return email;
+ }
+
+ public void setEmail(String email) {
+ this.email = email;
+ }
+
+ public String getAddress() {
+ return address;
+ }
+
+ public void setAddress(String address) {
+ this.address = address;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public void setName(String name) {
+ if (!name.matches("[a-zA-ZÑéΓΓ³ΓΊΓΓΓΓΓΓ±Γ ]+")) {
+ throw new IllegalArgumentException("El nombre no puede contener nΓΊmeros ni caracteres especiales.");
+ }
+ this.name = name;
+ }
+
+ @Override
+ public String toString() {
+ return "\nπ Student Info\n" +
+ "------------------------\n" +
+ "π ID : " + studentId + "\n" +
+ "π€ Name : " + name + "\n" +
+ "π Address : " + address + "\n" +
+ "π§ Email : " + email + "\n" +
+ "π Course : " + (course != null ? getCourse().getName() : "Not enrolled") + "\n";
+ }
+}
+
diff --git a/homework-java/src/main/java/com/example/Teacher.java b/homework-java/src/main/java/com/example/Teacher.java
new file mode 100644
index 00000000..ff178e04
--- /dev/null
+++ b/homework-java/src/main/java/com/example/Teacher.java
@@ -0,0 +1,65 @@
+package com.example;
+
+import java.util.*;
+
+public class Teacher {
+ private String teacherId;
+ private String name;
+ private double salary;
+
+
+ public Teacher (String name, double salary) {
+ this.teacherId = generateUniqueTeacherId();
+ setName(name);
+ setSalary(salary);
+ }
+ public Teacher(){
+ this.teacherId = generateUniqueTeacherId();
+ }
+ private static final Set usedIds = new HashSet<>();
+ private String generateUniqueTeacherId() {
+ String id;
+ Random random = new Random();
+ do {
+ int number = random.nextInt(900) + 100; // genera nΓΊmero entre 100 y 999
+ id = "T" + number;
+ } while (usedIds.contains(id));
+
+ usedIds.add(id);
+ return id;
+ }
+
+ public String getTeacherId() {
+ return teacherId;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
+
+ public double getSalary() {
+ return salary;
+ }
+
+ public void setSalary(double salary) {
+ this.salary = salary;
+ }
+
+ @Override
+ public String toString() {
+ return String.format(
+ "π¨βπ« Teacher Info:\n" +
+ "π ID : %s\n" +
+ "π Name : %s\n" +
+ "π° Salary : $%.2f",
+ teacherId, name, salary
+ );
+ }
+
+ public void setCourse(Course course) {
+ }
+}
diff --git a/homework-java/src/test/java/CommandHandlerTest.java b/homework-java/src/test/java/CommandHandlerTest.java
new file mode 100644
index 00000000..8f525f1b
--- /dev/null
+++ b/homework-java/src/test/java/CommandHandlerTest.java
@@ -0,0 +1,60 @@
+
+import com.example.CommandHandler;
+import com.example.Course;
+import com.example.Student;
+import com.example.Teacher;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import java.util.List;
+import static org.junit.jupiter.api.Assertions.*;
+
+public class CommandHandlerTest {
+ @Test
+ @DisplayName("Test sobre comando ENROLL")
+ public void testEnrollStudentUpdatesStudentAndCourse(){
+
+ Student student = new Student("Studiant Diez", "Calle Su casa 12", "mail@mail");
+ Course course = new Course("Ethics", 20.00);
+
+ var studentList = List.of(student);
+ var courseList = List.of(course);
+ List teacherList = List.of();
+
+ CommandHandler commandHandler = new CommandHandler(studentList, courseList, teacherList);
+
+ String commandWithIds = "ENROLL "+ student.getStudentId()+ " " + course.getCourseId();
+ System.out.println(commandWithIds);
+
+ commandHandler.executeCommand(commandWithIds);
+
+ assertEquals("Ethics", student.getCourse().getName());
+
+ }
+
+ @Test
+ @DisplayName("Test sobre comando ASSIGN")
+ public void testAssignTeacher(){
+
+ Teacher teacher = new Teacher("Ana Paula", 20000);
+ Course course = new Course("Physics", 30.00);
+
+ var teacherList = List.of(teacher);
+ var courseList = List.of(course);
+ List studentList = List.of();
+
+ CommandHandler commandHandler = new CommandHandler(studentList, courseList, teacherList);
+
+ String commandWithIds = "ASSIGN "+ teacher.getTeacherId()+ " " + course.getCourseId();
+ System.out.println(commandWithIds);
+
+ commandHandler.executeCommand(commandWithIds);
+
+ assertEquals("Ana Paula", teacher.getName());
+
+ }
+
+
+}
+
+
+
diff --git a/homework-java/target/classes/com/example/CommandHandler.class b/homework-java/target/classes/com/example/CommandHandler.class
new file mode 100644
index 00000000..4f27e610
Binary files /dev/null and b/homework-java/target/classes/com/example/CommandHandler.class differ
diff --git a/homework-java/target/classes/com/example/Course.class b/homework-java/target/classes/com/example/Course.class
new file mode 100644
index 00000000..cb3b69e4
Binary files /dev/null and b/homework-java/target/classes/com/example/Course.class differ
diff --git a/homework-java/target/classes/com/example/Main.class b/homework-java/target/classes/com/example/Main.class
new file mode 100644
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