done

src/main/java/com.ironhack/Main.java

@@ -0,0 +1,7 @@
+package main.java.com.ironhack;
+
+public class Main {
+    public static void main(String[] args) {
+        PersonTest.main(args);
+    }
+}

src/main/java/com.ironhack/Person.java

@@ -0,0 +1,56 @@
+package main.java.com.ironhack;
+
+public class Person {
+    private int id;
+    private String name;
+    private int age;
+    private String occupation;
+
+    public Person(int id, String name, int age, String occupation) {
+        this.id = id;
+        this.name = name;
+        this.age = age;
+        this.occupation = occupation;
+    }
+
+    public void setAge(int age) {
+        if (age < 0) {
+            throw new IllegalArgumentException("Age cannot be less than 0");
+        }
+        this.age = age;
+    }
+
+    public boolean equals(Person other) {
+        if (other == null) return false;
+        return this.name.equals(other.name) &&
+                this.age == other.age &&
+                this.occupation.equals(other.occupation);
+    }
+
+    public Person clone(int newId) {
+        return new Person(newId, this.name, this.age, this.occupation);
+    }
+
+    public void writeToFile(String filename) {
+        try (java.io.FileWriter writer = new java.io.FileWriter(filename)) {
+            writer.write(this.toString());
+        } catch (java.io.IOException e) {
+            System.out.println("An error occurred while writing to file: " + e.getMessage());
+        }
+    }
+
+    @Override
+    public String toString() {
+        return "ID: " + this.id + ", Name: " + this.name + ", Age: " + this.age + ", Occupation: " + this.occupation;
+    }
+
+    public static boolean isValidName(String name) {
+        return name != null && name.matches("^[A-Za-z]+\\s[A-Za-z]+$");
+    }
+
+    public int getId() { return id; }
+    public String getName() { return name; }
+    public int getAge() { return age; }
+    public String getOccupation() { return occupation; }
+}
+

src/main/java/com.ironhack/PersonTest.java

@@ -0,0 +1,42 @@
+package main.java.com.ironhack;
+
+public class PersonTest {
+    public static void main(String[] args) {
+        try {
+            Person p1 = new Person(1, "John Doe", 30, "Engineer");
+            p1.setAge(-1);
+        } catch (IllegalArgumentException e) {
+            System.out.println("Test Passed: " + e.getMessage());
+        }
+
+        Person p1 = new Person(1, "John Doe", 30, "Engineer");
+        Person p2 = new Person(2, "Jane Doe", 28, "Doctor");
+        Person p3 = new Person(3, "John Doe", 30, "Engineer");
+        System.out.println("p1 equals p3: " + p1.equals(p3));
+        System.out.println("p1 equals p2: " + p1.equals(p2));
+
+        Person p4 = p1.clone(4);
+        System.out.println("Cloned Person: " + p4);
+
+        p1.writeToFile("person.txt");
+
+        PersonsList pl = new PersonsList();
+        pl.addPerson(new Person(1, "John Doe", 30, "Engineer"));
+        pl.addPerson(new Person(2, "Jane Doe", 28, "Doctor"));
+
+        try {
+            Person foundPerson = pl.findByName("John Doe");
+            System.out.println("Found Person: " + foundPerson);
+
+            pl.findByName("JohnDoe");
+        } catch (IllegalArgumentException e) {
+            System.out.println("Test Passed: " + e.getMessage());
+        }
+
+        Person clonedPerson = pl.clonePerson(p1, 5);
+        System.out.println("Cloned Person with new ID: " + clonedPerson);
+
+        pl.writePersonToFile(p1, "person_test.txt");
+    }
+}
+

src/main/java/com.ironhack/PersonsList.java

@@ -0,0 +1,40 @@
+package main.java.com.ironhack;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class PersonsList {
+    private List<Person> persons;
+
+    public PersonsList() {
+        this.persons = new ArrayList<>();
+    }
+
+    public void addPerson(Person person) {
+        this.persons.add(person);
+    }
+
+    public Person findByName(String name) {
+        if (!Person.isValidName(name)) {
+            throw new IllegalArgumentException("Name must be in the format 'firstName lastName'");
+        }
+        for (Person person : persons) {
+            if (person.getName().equals(name)) {
+                return person;
+            }
+        }
+        return null;
+    }
+
+    public Person clonePerson(Person person, int newId) {
+        return person.clone(newId);
+    }
+
+    public void writePersonToFile(Person person, String filename) {
+        person.writeToFile(filename);
+    }
+
+    public List<Person> getPersons() {
+        return persons;
+    }
+}