Class 29-04-2025

Main.java

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+import java.io.IOException;
+
+public class Main {
+    public static void main(String[] args) throws IOException {
+        Person person = new Person(0,"Rogerio Ceni",22,"Goleiro");
+        Person person1 = new Person(1,"Rodrigo Conde",40,"Software developer"); // ERROR NAME
+        Person person2 = new Person(2,"Olavo Carvalho",122,"Caveira");
+        Person person3 = new Person(3,"Rodrigo Conde",40,"Software developer"); // DUPLICATED
+
+        // ERROR CASES:
+        // Person person1 = new Person(1,"RodrigoConde",12,"Bugado"); // ERROR NAME
+        // Person person1 = new Person(1,"RodrigoConde",-2,"Bugado"); // ERROR AGE
+
+
+        PersonList personList = new PersonList();
+
+        personList.addPerson(person);
+        personList.addPerson(person1);
+        personList.addPerson(person2);
+        personList.addPerson(person3);
+        personList.clonePerson(person2); // CLONING PERSON 2
+        personList.findByName("Rogerio Ceni");
+        personList.findByName("Rodrigo Conde");
+        personList.findByName("Gorfo Douro"); // NOT FOUND
+        personList.personToFile(person); // WRITE FILE
+        System.out.println(person1.equals(person3)); // TRUE
+        System.out.println(person1.equals(person2)); // FALSE
+    }
+}

Person.java

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+import java.util.Objects;
+
+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) {
+        setAge(age);
+        setName(name);
+        this.id = id;
+        this.name = name;
+        this.age = age;
+        this.occupation = occupation;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Person person = (Person) o;
+        return Objects.equals(getName(), person.getName()) &&
+                Objects.equals(getAge(), person.getAge()) &&
+                Objects.equals(getOccupation(), person.getOccupation());
+    }
+
+    // Getters e setters
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        String[] find;
+        find = name.split(" ");
+        if (find.length<2){
+            throw new RuntimeException("Name not correctly formatted, must be separated by a ' ' while creating!");
+        }
+        this.name = find[0];
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public void setAge(int age) {
+        if (age < 0) {
+            System.out.println("Age cannot be under 0.");
+            throw new RuntimeException("Age cannot be under 0.");
+        }
+        this.age = age;
+    }
+
+    public String getOccupation() {
+        return occupation;
+    }
+
+    public void setOccupation(String occupation) {
+        this.occupation = occupation;
+    }
+}
+

PersonList.java

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+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.util.List;
+import java.util.ArrayList;
+
+class PersonList {
+    private final List<Person> personList = new ArrayList<>();
+
+    public List<Person> getPersonList() {
+        return personList;
+    }
+
+    private String getName(String name) {
+        String[] find;
+        find = name.split(" ");
+        return find[0];
+    }
+
+    private String getLastName(String name) {
+        String[] find;
+        System.out.println(name);
+        find = name.split(" ");
+        try {
+            return find[1];
+        } catch (ArrayIndexOutOfBoundsException e) {
+            System.out.println("Name not correctly formatted, must be separated by a ' ' while creating");
+            return "Name not correctly formatted, must be separated by a ' ' while creating";
+        }
+    }
+
+    public void findByName(String fullName) {
+        String firstName = this.getName(fullName);
+        String lastName = this.getLastName(fullName);
+        List<Person> people = getPersonList();
+        try {
+            for (Person currentPerson : people) {
+                String[] nameParts = currentPerson.getName().split(" ");
+                if (nameParts.length >= 2 && nameParts[0].equalsIgnoreCase(firstName) && nameParts[1].equalsIgnoreCase(lastName)) {
+                    System.out.println("Nome: " + currentPerson.getName() + " ID: " + currentPerson.getId());
+                    return;
+                }
+            }
+        } catch (IllegalArgumentException e) {
+            System.out.println("Name must be space separated. Ex.: John Doe");
+            return;
+        }
+        System.out.println("Person " + fullName + " not found.");
+    }
+    public void clonePerson(Person person){
+        Person newPerson = new Person(person.getId()+100,person.getName(), person.getAge(), person.getOccupation());
+        this.personList.add(newPerson);
+        System.out.println("Created person: " + newPerson.getName() + " - ID: " + newPerson.getId());
+    }
+    public void personToFile(Person person) throws IOException {
+        File filename = new File("person.txt");
+
+        try (FileWriter file = new FileWriter(filename)) {
+            file.write("ID: " + person.getId() + "\n");
+            file.write("Name: " + person.getName() + "\n");
+            file.write("Age: " + person.getAge() + "\n");
+            file.write("Occupation: " + person.getOccupation() + "\n");
+        } catch (Exception e) {
+            System.out.println(e.getMessage());
+            throw new RuntimeException(e);
+        }
+    }
+
+    public void addPerson(Person person) {
+        personList.add(person);
+    }
+}