[POO] Changes (#69)

[POO] ATP1 added
--> Exercise made in Codecheck

[POO] Removed tp_codecheck
--> Didn't really have too much there and not worth keeping around

[POO] Code reformat
--> Optimized and reformated code for all directories in source

1ano/2semestre/poo/src/aula01/KmToMiles.java

@@ -1,4 +1,5 @@
 package aula01;
+
 import java.util.Scanner;
 
 public class KmToMiles {

1ano/2semestre/poo/src/aula01/ReadFileExample.java

@@ -1,4 +1,5 @@
 package aula01;
+
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;

1ano/2semestre/poo/src/aula02/DistanceBetweenPoints.java

@@ -2,6 +2,7 @@ package aula02;
 
 // Código da package utils disponível em
 // https://github.com/TiagoRG/uaveiro-leci/tree/master/1ano/2semestre/poo/src/utils
+
 import utils.UserInput;
 
 import java.util.Scanner;

1ano/2semestre/poo/src/aula02/EnergyToHeatWater.java

@@ -2,6 +2,7 @@ package aula02;
 
 // Código da package utils disponível em
 // https://github.com/TiagoRG/uaveiro-leci/tree/master/1ano/2semestre/poo/src/utils
+
 import utils.UserInput;
 
 import java.util.Scanner;

1ano/2semestre/poo/src/aula02/Investment.java

@@ -2,6 +2,7 @@ package aula02;
 
 // Código da package utils disponível em
 // https://github.com/TiagoRG/uaveiro-leci/tree/master/1ano/2semestre/poo/src/utils
+
 import utils.UserInput;
 
 import java.util.Scanner;

1ano/2semestre/poo/src/aula02/KmToMiles.java

@@ -2,6 +2,7 @@ package aula02;
 
 // Código da package utils disponível em
 // https://github.com/TiagoRG/uaveiro-leci/tree/master/1ano/2semestre/poo/src/utils
+
 import utils.UserInput;
 
 import java.util.Scanner;

1ano/2semestre/poo/src/aula02/PythagoreanTheorem.java

@@ -2,6 +2,7 @@ package aula02;
 
 // Código da package utils disponível em
 // https://github.com/TiagoRG/uaveiro-leci/tree/master/1ano/2semestre/poo/src/utils
+
 import utils.UserInput;
 
 import java.util.Scanner;

1ano/2semestre/poo/src/aula02/SecsToHMS.java

@@ -2,6 +2,7 @@ package aula02;
 
 // Código da package utils disponível em
 // https://github.com/TiagoRG/uaveiro-leci/tree/master/1ano/2semestre/poo/src/utils
+
 import utils.UserInput;
 
 import java.util.Scanner;

1ano/2semestre/poo/src/aula05/AuctionDemo.java

@@ -103,9 +103,11 @@ class Property {
     public int getId() {
         return this.id;
     }
+
     public boolean isAvailable() {
         return this.availability;
     }
+
     public void setAvailability(boolean availability) {
         this.availability = availability;
     }

1ano/2semestre/poo/src/aula05/DateYMD.java

@@ -15,6 +15,27 @@ public class DateYMD {
         this.year = year;
     }
 
+    static boolean validMonth(int month) {
+        return month >= 1 && month <= 12;
+    }
+
+    static int monthDays(int month, int year) {
+        if (!validMonth(month))
+            return -1;
+        int[] daysPerMonth = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
+        if (month == 2 && isLeapYear(year))
+            return 29;
+        return daysPerMonth[month - 1];
+    }
+
+    static boolean isLeapYear(int year) {
+        return year % 100 == 0 ? year % 400 == 0 : year % 4 == 0;
+    }
+
+    static boolean validDate(int day, int month, int year) {
+        return day >= 1 && day <= monthDays(month, year);
+    }
+
     public void set(int day, int month, int year) {
         if (!validDate(day, month, year))
             throw new IllegalArgumentException("Invalid date");
@@ -73,26 +94,6 @@ public class DateYMD {
     public String toString() {
         return String.format("%04d-%02d-%02d", this.year, this.month, this.day);
     }
-    static boolean validMonth(int month) {
-        return month >= 1 && month <= 12;
-    }
-
-    static int monthDays(int month, int year) {
-        if (!validMonth(month))
-            return -1;
-        int[] daysPerMonth = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
-        if (month == 2 && isLeapYear(year))
-            return 29;
-        return daysPerMonth[month - 1];
-    }
-
-    static boolean isLeapYear(int year) {
-        return year % 100 == 0 ? year % 400 == 0 : year % 4 == 0;
-    }
-
-    static boolean validDate(int day, int month, int year) {
-        return day >= 1 && day <= monthDays(month, year);
-    }
 }
 
 class TestDateYMD {

1ano/2semestre/poo/src/aula06/ex1/Bolser.java

@@ -19,6 +19,7 @@ public class Bolser extends Student{
     public Professor getSupervisor() {
         return this.supervisor;
     }
+
     public void setSupervisor(Professor supervisor) {
         if (supervisor == null) {
             throw new IllegalArgumentException("Supervisor cannot be null");
@@ -29,6 +30,7 @@ public class Bolser extends Student{
     public double getMonthlyAmount() {
         return this.monthlyAmount;
     }
+
     public void setMonthlyAmount(double monthlyAmount) {
         if (monthlyAmount < 0) {
             throw new IllegalArgumentException("Monthly amount cannot be negative");

1ano/2semestre/poo/src/aula06/ex1/Person.java

@@ -18,6 +18,7 @@ public class Person {
     public String getName() {
         return this.name;
     }
+
     public void setName(String name) {
         if (name == null || name.isEmpty())
             throw new IllegalArgumentException("Name cannot be null or empty");
@@ -27,6 +28,7 @@ public class Person {
     public int getCc() {
         return this.cc;
     }
+
     public void setCc(int cc) {
         if (String.valueOf(cc).length() != 8)
             throw new IllegalArgumentException("CC must have 8 digits");
@@ -36,6 +38,7 @@ public class Person {
     public DateYMD getBirthDate() {
         return this.birthDate;
     }
+
     public void setBirthDate(DateYMD birthDate) {
         if (birthDate == null)
             throw new IllegalArgumentException("Birth date cannot be null");

1ano/2semestre/poo/src/aula06/ex1/Professor.java

@@ -15,6 +15,7 @@ public class Professor extends Person {
     public String getCategory() {
         return this.category;
     }
+
     public void setCategory(String category) {
         if (category == null || category.isEmpty())
             throw new IllegalArgumentException("Category cannot be null or empty");
@@ -26,6 +27,7 @@ public class Professor extends Person {
     public String getDepartment() {
         return this.department;
     }
+
     public void setDepartment(String department) {
         if (department == null || department.isEmpty())
             throw new IllegalArgumentException("Department cannot be null or empty");

1ano/2semestre/poo/src/aula06/ex1/Student.java

@@ -5,9 +5,9 @@ import utils.DateYMD;
 import java.time.LocalDate;
 
 public class Student extends Person {
+    public static int currentNMec = 100;
     private DateYMD registrationDate;
     private int nMec;
-    public static int currentNMec = 100;
 
     public Student(String name, int cc, DateYMD birthDate, DateYMD registrationDate) {
         super(name, cc, birthDate);
@@ -22,6 +22,7 @@ public class Student extends Person {
     public int getNMec() {
         return this.nMec;
     }
+
     public void setNMec(int nMec) {
         this.nMec = nMec;
     }
@@ -29,6 +30,7 @@ public class Student extends Person {
     public DateYMD getRegistrationDate() {
         return this.registrationDate;
     }
+
     public void setRegistrationDate(DateYMD registrationDate) {
         LocalDate now = LocalDate.now();
         this.registrationDate = registrationDate == null ? new DateYMD(now.getDayOfMonth(), now.getMonthValue(), now.getYear()) : registrationDate;

1ano/2semestre/poo/src/aula06/ex2/Contact.java

@@ -3,13 +3,12 @@ package aula06.ex2;
 import aula06.ex1.Person;
 
 public class Contact {
+    private static int currentId = 1;
     private final int id;
     private Person person;
     private String email;
     private String phone;
 
-    private static int currentId = 1;
-
     public Contact(Person person, String email, String phone) {
         if ((email == null || email.isEmpty()) && (phone == null || phone.isEmpty()))
             throw new IllegalArgumentException("Either email or phone must be provided");
@@ -26,6 +25,7 @@ public class Contact {
     public Person getPerson() {
         return person;
     }
+
     public void setPerson(Person person) {
         if (person == null)
             throw new IllegalArgumentException("Person must be provided");
@@ -35,6 +35,7 @@ public class Contact {
     public String getEmail() {
         return email;
     }
+
     public void setEmail(String email) {
         if (!(email == null || email.isEmpty()) &&
                 !email.matches("^[a-zA-Z_0-9.]+@[a-zA-Z_0-9.]+\\.[a-zA-Z_0-9]+$"))
@@ -45,6 +46,7 @@ public class Contact {
     public String getPhone() {
         return phone;
     }
+
     public void setPhone(String phone) {
         if (!(phone == null || phone.isEmpty()) &&
                 !phone.matches("^9[0-9]{8}$"))

1ano/2semestre/poo/src/aula06/ex2/ContactList.java

@@ -40,6 +40,7 @@ public class ContactList {
         System.out.print("> ");
         return sin.nextLine();
     }
+
     private static void addContact() {
         System.out.print("Insira o nome: ");
         String name = sin.nextLine();
@@ -69,6 +70,7 @@ public class ContactList {
             contacts = newContacts;
         }
     }
+
     private static void changeContact() {
         System.out.print("Insira o nome, email ou telefone do contacto que pretende alterar: ");
         String query = sin.nextLine();

1ano/2semestre/poo/src/aula06/ex3/Vector.java

@@ -7,12 +7,15 @@ public class Vector {
     public Vector() {
         this.vector = new int[0];
     }
+
     public Vector(int size) {
         this.vector = new int[size];
     }
+
     public Vector(int[] vector) {
         this.vector = vector;
     }
+
     public int[] getVector() {
         return vector;
     }
@@ -21,12 +24,14 @@ public class Vector {
     public int size() {
         return this.vector.length;
     }
+
     public boolean contains(int value) {
         for (int n : this.vector)
             if (n == value)
                 return true;
         return false;
     }
+
     public int count(int value) {
         int count = 0;
         for (int n : this.vector)
@@ -43,6 +48,7 @@ public class Vector {
         aux[this.size()] = value;
         this.vector = aux;
     }
+
     public void remove(int value) {
         int[] aux = new int[this.size() - this.count(value)];
         int i = 0;
@@ -54,6 +60,7 @@ public class Vector {
         }
         this.vector = aux;
     }
+
     public void empty() {
         this.vector = new int[0];
     }
@@ -69,6 +76,7 @@ public class Vector {
                 result.insert(n);
         return result;
     }
+
     public Vector subtract(Vector secondVector) {
         Vector result = new Vector();
         for (int n : this.vector)
@@ -76,6 +84,7 @@ public class Vector {
                 result.insert(n);
         return result;
     }
+
     public Vector intersect(Vector secondVector) {
         Vector result = new Vector();
         for (int n : this.vector)

1ano/2semestre/poo/src/aula06/ex3/VectorTest.java

@@ -4,12 +4,17 @@ package aula06.ex3;
 public class VectorTest {
     public static void main(String[] args) {
         Vector c1 = new Vector();
-        c1.insert(4); c1.insert(7); c1.insert(6); c1.insert(5);
+        c1.insert(4);
+        c1.insert(7);
+        c1.insert(6);
+        c1.insert(5);
 
         Vector c2 = new Vector();
         int[] test = {7, 3, 2, 5, 4, 6, 7};
         for (int el : test) c2.insert(el);
-        c2.remove(3); c2.remove(5); c2.remove(6);
+        c2.remove(3);
+        c2.remove(5);
+        c2.remove(6);
 
         System.out.println(c1);
         System.out.println(c2);

1ano/2semestre/poo/src/aula07/ex1/Shape.java

@@ -2,8 +2,12 @@ package aula07.ex1;
 
 public abstract class Shape {
     protected String color;
+
     public abstract boolean equals(Shape c2);
+
     public abstract String toString();
+
     public abstract double getArea();
+
     public abstract double getPerimeter();
 }

1ano/2semestre/poo/src/aula07/ex2/Date.java

@@ -1,16 +1,6 @@
 package aula07.ex2;
 
 public abstract class Date {
-    public abstract int getAbsDay();
-    public abstract int getDay();
-    public abstract int getMonth();
-    public abstract int getYear();
-    public abstract void increment();
-    public abstract void decrement();
-    public abstract void addDays(int days);
-    public abstract void removeDays(int days);
-
-
     public static int monthDays(int month, int year) {
         if (!validMonth(month))
             return -1;
@@ -31,4 +21,20 @@ public abstract class Date {
     public static boolean isLeapYear(int year) {
         return year % 100 == 0 ? year % 400 == 0 : year % 4 == 0;
     }
+
+    public abstract int getAbsDay();
+
+    public abstract int getDay();
+
+    public abstract int getMonth();
+
+    public abstract int getYear();
+
+    public abstract void increment();
+
+    public abstract void decrement();
+
+    public abstract void addDays(int days);
+
+    public abstract void removeDays(int days);
 }

1ano/2semestre/poo/src/aula07/ex2/DateTest.java

@@ -6,7 +6,8 @@ public class DateTest {
     public static void main(String[] args) {
         Scanner sin = new Scanner(System.in);
 
-        mainLoop: while (true) {
+        mainLoop:
+        while (true) {
             System.out.print("Class to test (0-Quit;1-DateYMD;2-DateND): ");
             int classoption = sin.nextInt();
 
@@ -17,7 +18,8 @@ public class DateTest {
                 }
                 case 1 -> {
                     DateYMD date = null;
-                    class1Loop: while (true) {
+                    class1Loop:
+                    while (true) {
                         System.out.println("Date operations:");
                         System.out.println("1 - Create date");
                         System.out.println("2 - Show current date");
@@ -28,8 +30,9 @@ public class DateTest {
                         System.out.print("Option: ");
                         int option = sin.nextInt();
                         if (option == 0)
-                            break class1Loop;
+                            break;
-                        class1Switch: switch (option) {
+                        class1Switch:
+                        switch (option) {
                             case 1 -> {
                                 System.out.print("Day: ");
                                 int day = sin.nextInt();
@@ -43,21 +46,21 @@ public class DateTest {
                             case 2 -> {
                                 if (date == null) {
                                     System.out.println("Date not created");
-                                    break class1Switch;
+                                    break;
                                 }
                                 System.out.println("Current date: " + date);
                             }
                             case 3 -> {
                                 if (date == null) {
                                     System.out.println("Date not created");
-                                    break class1Switch;
+                                    break;
                                 }
                                 System.out.println("Current date: " + new DateND(date.getAbsDay()));
                             }
                             case 4 -> {
                                 if (date == null) {
                                     System.out.println("Date not created");
-                                    break class1Switch;
+                                    break;
                                 }
                                 System.out.print("Number of days to increment date by: ");
                                 int daysToIncrement = sin.nextInt();
@@ -67,7 +70,7 @@ public class DateTest {
                             case 5 -> {
                                 if (date == null) {
                                     System.out.println("Date not created");
-                                    break class1Switch;
+                                    break;
                                 }
                                 System.out.print("Number of days to decremente date by: ");
                                 int daysToDecrement = sin.nextInt();
@@ -80,7 +83,8 @@ public class DateTest {
                 }
                 case 2 -> {
                     DateND date = null;
-                    class2Loop: while (true) {
+                    class2Loop:
+                    while (true) {
                         System.out.println("Date operations:");
                         System.out.println("1 - Create date");
                         System.out.println("2 - Show current date");
@@ -91,8 +95,9 @@ public class DateTest {
                         System.out.print("Option: ");
                         int option = sin.nextInt();
                         if (option == 0)
-                            break class2Loop;
+                            break;
-                        class2Switch: switch (option) {
+                        class2Switch:
+                        switch (option) {
                             case 1 -> {
                                 System.out.print("Day: ");
                                 int day = sin.nextInt();
@@ -102,21 +107,21 @@ public class DateTest {
                             case 2 -> {
                                 if (date == null) {
                                     System.out.println("Date not created");
-                                    break class2Switch;
+                                    break;
                                 }
                                 System.out.println("Current date: " + date);
                             }
                             case 3 -> {
                                 if (date == null) {
                                     System.out.println("Date not created");
-                                    break class2Switch;
+                                    break;
                                 }
                                 System.out.println("Current date: " + new DateYMD(date.getDay(), date.getMonth(), date.getYear()));
                             }
                             case 4 -> {
                                 if (date == null) {
                                     System.out.println("Date not created");
-                                    break class2Switch;
+                                    break;
                                 }
                                 System.out.print("Number of days to increment date by: ");
                                 int daysToIncrement = sin.nextInt();
@@ -126,7 +131,7 @@ public class DateTest {
                             case 5 -> {
                                 if (date == null) {
                                     System.out.println("Date not created");
-                                    break class2Switch;
+                                    break;
                                 }
                                 System.out.print("Number of days to decremente date by: ");
                                 int daysToDecrement = sin.nextInt();

1ano/2semestre/poo/src/aula07/ex3/Game.java

@@ -3,10 +3,10 @@ package aula07.ex3;
 public class Game {
     private final Team team1;
     private final Team team2;
-    private int team1Goals;
-    private int team2Goals;
     private final Ball ball;
     private final double gameDuration;
+    private int team1Goals;
+    private int team2Goals;
     private double timeElapsed;
 
     public Game(Team team1, Team team2, Ball ball, double gameDuration) {

1ano/2semestre/poo/src/aula07/ex3/Main.java

@@ -75,7 +75,8 @@ public class Main {
                 System.out.println("3 - Adicionar golo");
                 System.out.print("Opção: ");
                 int option = Integer.parseInt(sin.nextLine());
-                swit : switch (option) {
+                swit:
+                switch (option) {
                     case 1 -> {
                         System.out.print("Novo X: ");
                         double x = Double.parseDouble(sin.nextLine());

1ano/2semestre/poo/src/aula07/ex3/Robot.java

@@ -23,6 +23,7 @@ public class Robot extends MovableObject {
     public PlayerPosition getPlayerPosition() {
         return this.playerPosition;
     }
+
     public void setPlayerPosition(PlayerPosition playerPosition) {
         this.playerPosition = playerPosition;
     }
@@ -30,6 +31,7 @@ public class Robot extends MovableObject {
     public int getGoalsScored() {
         return this.goalsScored;
     }
+
     public void increaseGoalsScored() {
         this.goalsScored++;
     }

1ano/2semestre/poo/src/aula08/ex1/Interfaces/IElectricVehicle.java

@@ -2,5 +2,6 @@ package aula08.ex1.Interfaces;
 
 public interface IElectricVehicle {
     int currentBatteryLvl();
+
     void charge(int percentage);
 }

1ano/2semestre/poo/src/aula08/ex1/Interfaces/IFuelVehicle.java

@@ -2,5 +2,6 @@ package aula08.ex1.Interfaces;
 
 public interface IFuelVehicle {
     int fuelLevel();
+
     void fillTank(int level);
 }

1ano/2semestre/poo/src/aula08/ex1/Interfaces/IKmTravelled.java

@@ -2,6 +2,8 @@ package aula08.ex1.Interfaces;
 
 public interface IKmTravelled {
     void trip(int km);
+
     int lastTrip();
+
     int totalDistance();
 }

1ano/2semestre/poo/src/aula08/ex1/Vehicles/Motorcycle.java

@@ -64,13 +64,6 @@ public class Motorcycle extends Vehicle implements IFuelVehicle {
     public enum MotorcycleType {
         SPORT, TOURING;
 
-        public String toString() {
-            return switch (this) {
-                case SPORT -> "Sport";
-                case TOURING -> "Touring";
-            };
-        }
-
         public static MotorcycleType fromString(String s) {
             return switch (s) {
                 case "SPORT", "Sport", "sport" -> SPORT;
@@ -78,5 +71,12 @@ public class Motorcycle extends Vehicle implements IFuelVehicle {
                 default -> throw new IllegalArgumentException("Invalid MotorcycleType: " + s);
             };
         }
+
+        public String toString() {
+            return switch (this) {
+                case SPORT -> "Sport";
+                case TOURING -> "Touring";
+            };
+        }
     }
 }

1ano/2semestre/poo/src/aula08/ex2/Aliments/Aliment.java

@@ -5,10 +5,10 @@ import aula08.ex2.Enums.AlimentOrigin;
 import java.util.Objects;
 
 public abstract class Aliment {
+    final AlimentOrigin alimentOrigin;
     double proteins;
     double calories;
     double weight;
-    final AlimentOrigin alimentOrigin;
 
     public Aliment(double proteins, double calories, double weight, AlimentOrigin alimentOrigin) {
         setProteins(proteins);
@@ -19,7 +19,7 @@ public abstract class Aliment {
 
     public double getProteins() {
         return this.proteins;
-    };
+    }
 
     public void setProteins(double proteins) {
         if (proteins <= 0)

1ano/2semestre/poo/src/aula08/ex3/Interfaces/IProduct.java

@@ -2,9 +2,14 @@ package aula08.ex3.Interfaces;
 
 public interface IProduct {
     String getName();
-    void setPrice(double price);
+
     double getPrice();
+
+    void setPrice(double price);
+
     int stock();
+
     void addStock(int amount);
+
     void removeStock(int amount);
 }

1ano/2semestre/poo/src/aula08/ex3/Interfaces/IPurchase.java

@@ -4,6 +4,8 @@ import aula08.ex3.Product;
 
 public interface IPurchase {
     void addProduct(Product product, int amount);
+
     void listProducts();
+
     double getTotal();
 }

1ano/2semestre/poo/src/aula09/ex1/ALDemo.java

@@ -11,7 +11,8 @@ import java.util.Set;
 public class ALDemo {
     public static void main(String[] args) {
         ArrayList<Integer> c1 = new ArrayList<>();
-        for(int i= 10; i<= 100; i+=10) c1.add(i);System.out.println("Size: "+ c1.size());
+        for (int i = 10; i <= 100; i += 10) c1.add(i);
+        System.out.println("Size: " + c1.size());
 
         for (int i = 0; i < c1.size(); i++)
             System.out.println("Elemento: " + c1.get(i));

1ano/2semestre/poo/src/aula09/ex3/PlaneManager.java

@@ -67,8 +67,7 @@ public class PlaneManager {
         for (Plane plane : planes) {
             if (plane instanceof CommercialPlane && type.equals("commercial")) {
                 System.out.println(plane);
-            }
+            } else if (plane instanceof MilitaryPlane && type.equals("military")) {
-            else if (plane instanceof MilitaryPlane && type.equals("military")) {
                 System.out.println(plane);
             }
         }

1ano/2semestre/poo/src/aula09/ex3/PlaneTester.java

@@ -57,8 +57,7 @@ public class PlaneTester {
             System.out.print("Enter the plane's crew members count: ");
             int crewMembersCount = Integer.parseInt(scanner.nextLine());
             planeManager.addPlane(new CommercialPlane(id, manufacturer, model, year, passengerCount, maxSpeed, crewMembersCount));
-        }
+        } else if (type.equals("military")) {
-        else if (type.equals("military")) {
             System.out.print("Enter the plane's missile count: ");
             int missileCount = Integer.parseInt(scanner.nextLine());
             planeManager.addPlane(new MilitaryPlane(id, manufacturer, model, year, passengerCount, maxSpeed, missileCount));

1ano/2semestre/poo/src/aula10/ex1/Book.java

@@ -13,12 +13,29 @@ public class Book {
         this.setYear(year);
     }
 
-    public String getTitle() { return this.title; }
+    public String getTitle() {
-    public void setTitle(String title) { this.title = title; }
+        return this.title;
-    public String getAuthor() { return this.author; }
+    }
-    public void setAuthor(String author) { this.author = author; }
+
-    public int getYear() { return this.year; }
+    public void setTitle(String title) {
-    public void setYear(int year) { this.year = year; }
+        this.title = title;
+    }
+
+    public String getAuthor() {
+        return this.author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public int getYear() {
+        return this.year;
+    }
+
+    public void setYear(int year) {
+        this.year = year;
+    }
 
     @Override
     public String toString() {

1ano/2semestre/poo/src/aula11/ex4/FlightManager.java

@@ -15,6 +15,16 @@ public class FlightManager {
     private String delaysTable;
     private String flightsNTable;
 
+    private static Map<String, Integer> sortByValue(Map<String, Integer> unsortMap) {
+        List<Map.Entry<String, Integer>> list = new LinkedList<>(unsortMap.entrySet());
+
+        // Sorting the list based on values
+        list.sort((o1, o2) -> o2.getValue().compareTo(o1.getValue()) == 0
+                ? o2.getKey().compareTo(o1.getKey())
+                : o2.getValue().compareTo(o1.getValue()));
+        return list.stream().collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue, (a, b) -> b, LinkedHashMap::new));
+    }
+
     public void loadCompanies(String filename) {
         Scanner input;
         try {
@@ -127,14 +137,4 @@ public class FlightManager {
             }
         }
     }
-
-    private static Map<String, Integer> sortByValue(Map<String, Integer> unsortMap) {
-        List<Map.Entry<String, Integer>> list = new LinkedList<>(unsortMap.entrySet());
-
-        // Sorting the list based on values
-        list.sort((o1, o2) -> o2.getValue().compareTo(o1.getValue()) == 0
-                ? o2.getKey().compareTo(o1.getKey())
-                : o2.getValue().compareTo(o1.getValue()));
-        return list.stream().collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue, (a, b) -> b, LinkedHashMap::new));
-    }
 }

1ano/2semestre/poo/src/aula11/ex4/Time.java

@@ -11,6 +11,14 @@ public class Time {
         this.minute = minute;
     }
 
+    public static int timeToMinsInt(Time time) {
+        return time.hour() * 60 + time.minute();
+    }
+
+    public static Time minsIntToTime(int mins) {
+        return new Time(mins / 60, mins % 60);
+    }
+
     public Time addTime(Time time) {
         int newHour = hour + time.hour();
         int newMinute = minute + time.minute();
@@ -34,14 +42,6 @@ public class Time {
         return String.format("%02d:%02d", hour, minute);
     }
 
-    public static int timeToMinsInt(Time time) {
-        return time.hour() * 60 + time.minute();
-    }
-
-    public static Time minsIntToTime(int mins) {
-        return new Time(mins/60, mins%60);
-    }
-
     public int hour() {
         return hour;
     }

1ano/2semestre/poo/src/aval/aa1/Animal.java

@@ -26,11 +26,16 @@ public class Animal {
         return id;
     }
 
+    public String getName() {
+        return name;
+    }
+
     public void setName(String name) {
         this.name = name;
     }
-    public String getName() {
+
-        return name;
+    public int getWeight() {
+        return weight;
     }
 
     public void setWeight(int weight) {
@@ -38,8 +43,9 @@ public class Animal {
             throw new IllegalArgumentException("Weight must be positive!");
         this.weight = weight;
     }
-    public int getWeight() {
+
-        return weight;
+    public int getAge() {
+        return age;
     }
 
     public void setAge(int age) {
@@ -47,21 +53,20 @@ public class Animal {
             throw new IllegalArgumentException("Age must be positive!");
         this.age = age;
     }
-    public int getAge() {
+
-        return age;
+    public String getSponsor() {
+        return sponsor;
     }
 
     public void setSponsor(String sponsor) {
         this.sponsor = sponsor;
     }
-    public String getSponsor() {
-        return sponsor;
-    }
 
     @Override
     public String toString() {
         return String.format("ID: %d\nName: %s\nAge: %d\nWeight: %d\nSponsor: %s", this.id, this.name, this.age, this.weight, this.sponsor == null ? "None" : sponsor);
     }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) return true;
@@ -69,6 +74,7 @@ public class Animal {
         Animal animal = (Animal) o;
         return id == animal.id && weight == animal.weight && age == animal.age && Objects.equals(name, animal.name) && Objects.equals(sponsor, animal.sponsor);
     }
+
     @Override
     public int hashCode() {
         return Objects.hash(id, name, weight, age, sponsor);

1ano/2semestre/poo/src/aval/aa1/IPetShelter.java

@@ -1,9 +1,13 @@
 package aval.aa1;
 
 public interface IPetShelter {
-    public void addAnimal(Animal animal);
+    void addAnimal(Animal animal);
-    public void removeAnimal(Animal animal);
+
-    public Animal searchForAnimal(String name);
+    void removeAnimal(Animal animal);
-    public boolean sponsorAnimal(int animalId);
+
-    public void listAllAnimals();
+    Animal searchForAnimal(String name);
+
+    boolean sponsorAnimal(int animalId);
+
+    void listAllAnimals();
 }

1ano/2semestre/poo/src/aval/aa1/PetShelter.java

@@ -3,7 +3,7 @@ package aval.aa1;
 import java.util.Scanner;
 
 public class PetShelter implements IPetShelter {
-    private String shelterName;
+    private final String shelterName;
     private Animal[] animals;
 
     public PetShelter(String shelterName) {
@@ -17,9 +17,7 @@ public class PetShelter implements IPetShelter {
             animals[0] = animal;
         } else {
             Animal[] newAnimals = new Animal[animals.length + 1];
-            for (int i = 0; i < animals.length; i++) {
+            System.arraycopy(animals, 0, newAnimals, 0, animals.length);
-                newAnimals[i] = animals[i];
-            }
             newAnimals[newAnimals.length - 1] = animal;
             animals = newAnimals;
         }

1ano/2semestre/poo/src/aval/aa2/Classes/Order.java

@@ -1,6 +1,5 @@
 package aval.aa2.Classes;
 
-import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.util.List;
 import java.util.Objects;

1ano/2semestre/poo/src/aval/aa2/OrderTester.java

@@ -9,7 +9,6 @@ import java.io.FileReader;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.util.ArrayList;
 import java.util.Arrays;

1ano/2semestre/poo/src/aval/atp1/RainfallInfo.java

@@ -0,0 +1,41 @@
+package aval.atp1;
+
+import java.time.LocalDate;
+// YOU MAY ADD IMPORTS HERE
+
+public class RainfallInfo {
+    private final LocalDate date;
+    private final String location;
+    private final double rainfall;
+
+    public RainfallInfo(LocalDate date, String location, double rainfall) {
+        this.date = date;
+        this.location = location;
+        this.rainfall = rainfall;
+    }
+
+    public LocalDate date() {
+        return date;
+    }
+
+    public String location() {
+        return location;
+    }
+
+    public double rainfall() {
+        return rainfall;
+    }
+
+    // YOU MAY ADD METHODS HERE
+    @Override
+    public String toString() {
+        return String.format("(%s, %s, %.1f)", date(), location(), rainfall());
+    }
+
+
+    @Override
+    public int hashCode() {
+        return date.hashCode() | location.hashCode() | Double.hashCode(rainfall);
+    }
+
+}

1ano/2semestre/poo/src/aval/atp1/RainfallTest.java

@@ -0,0 +1,118 @@
+package aval.atp1;
+
+import java.io.FileReader;
+import java.io.IOError;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.time.LocalDate;
+import java.time.Month;
+import java.util.*;
+// YOU MAY ADD IMPORTS HERE
+
+public class RainfallTest {
+    public static List<RainfallInfo> loadData(String filePath) {
+        List<RainfallInfo> data = null;
+        try {
+            // Check if file is csv
+            if (!filePath.endsWith(".csv")) {
+                return null;
+            }
+
+            if (!Files.exists(Paths.get(filePath))) {
+                return null;
+            }
+
+            // 1) Read the file and add RainfallInfo objects to a list.
+            Scanner sc = new Scanner(new FileReader(filePath));
+            sc.nextLine(); // skip header
+
+            while (sc.hasNextLine()) {
+                String[] datacomps = sc.nextLine().split(",");
+                LocalDate date = LocalDate.parse(datacomps[0]);
+                String location = datacomps[1];
+                double rainfall = Double.parseDouble(datacomps[2]);
+                if (data == null) data = new ArrayList<>();
+                data.add(new RainfallInfo(date, location, rainfall));
+            }
+        } catch (Exception e) {
+            throw new IOError(e.getCause()); // repackage as error
+        }
+        return data;
+    }
+
+    public static String printLocationData(List<RainfallInfo> data, String loc) {
+        System.out.printf("Rainfall for location %s:\n", loc);
+        // 2) Print rainfall values for the given location
+        data.stream().filter(r -> r.location().equals(loc)).forEach(System.out::println);
+        return "";
+    }
+
+    public static Map<Month, Double> totalPerMonth(List<RainfallInfo> data) {
+        // 3) Calculate and return a map with the total rainfall per month
+        Map<Month, Double> map = new HashMap<>();
+        data.forEach(r -> {
+            Month m = r.date().getMonth();
+            if (map.containsKey(m)) {
+                map.put(m, map.get(m) + r.rainfall());
+            } else {
+                map.put(m, r.rainfall());
+            }
+        });
+        return map;
+    }
+
+    public static String printMapSorted(Map<Month, Double> map) {
+        // 4) Print map sorted by key
+        map.entrySet().stream().sorted(Map.Entry.comparingByKey()).forEach(e -> System.out.printf("%s: %.1f\n", e.getKey(), e.getValue()));
+        return "";
+    }
+
+    // YOU MAY ADD METHODS HERE
+    public static String main() {
+        Test.lst = null;
+        Test.map = null;
+        // Load the file data to the list
+        List<RainfallInfo> rainfallData = loadData("rainfall_data.csv");
+        System.out.printf("Data size: %d\n", rainfallData.size());
+        System.out.printf("Data hash: %d\n", rainfallData.hashCode());
+        System.out.println();
+
+        // Show data for a single town
+        printLocationData(rainfallData, "Braga");
+        System.out.println();
+
+        // Find total rainfall per month
+        Map<Month, Double> rainfallPerMonth = totalPerMonth(rainfallData);
+
+        // Print sorted results
+        printMapSorted(rainfallPerMonth);
+        return "";
+    }
+
+    public static void main(String[] args) {
+        main();
+    }
+}
+
+class Test {
+    static List<RainfallInfo> lst = new ArrayList<>();
+    static Map<Month, Double> map = new HashMap<>();
+    // Variables used in unit tests (DON'T USE IN YOUR IMPLEMENTATION!):
+    private static final LocalDate[] dates = {
+            LocalDate.parse("2023-03-02"),
+            LocalDate.parse("2023-04-17"),
+            LocalDate.parse("2023-05-27"),
+    };
+
+    static {
+        lst.add(new RainfallInfo(dates[2], "Aveiro", 2.2));
+        lst.add(new RainfallInfo(dates[1], "Braga", 3.0));
+        lst.add(new RainfallInfo(dates[0], "Aveiro", 0.0));
+        lst.add(new RainfallInfo(dates[2], "Braga", 4.0));
+        lst.add(new RainfallInfo(dates[1], "Aveiro", 1.1));
+        map.put(Month.JULY, 7.7);
+        map.put(Month.MAY, 5.5);
+        map.put(Month.JUNE, 6.6);
+        map.put(Month.MARCH, 3.3);
+    }
+}

1ano/2semestre/poo/src/tp_codecheck/README.md

@@ -1,6 +0,0 @@
-# Programação Orientada a Objetos
-## Exercícios TP
-### Resoluções para exercícios sugeridos nas aulas Teórico-Práticas
-
----
-*Pode conter erros, caso encontre algum, crie um* [*ticket*](https://github.com/TiagoRG/uaveiro-leci/issues/new)

1ano/2semestre/poo/src/tp_codecheck/tp01/BankInterest.java

@@ -1,59 +0,0 @@
-package tp_codecheck.tp01;
-
-// Solução do exercício 2
-
-import java.util.Scanner;
-
-/**
-   This program updates an account balance, according to the table below:
-         Balance      Interest Rate    Charge
-     > $100,000.00	 2.75 %	       $ 0.00
-     > $25,000.00	 2.00 %	       $ 0.00
-     > $10,000.00	 1.00 %	       $ 0.00
-    >= $0.00	         0.00 %	       $ 0.00
-     < $0.00	         0.00 %	      $ 25.00
-   and prints out the new balance.
-*/
-public class BankInterest
-{
-   public static void main(String[] args)
-   {
-      // Define constants
-      final double HI_RATE = 2.75;
-      final double MD_RATE = 2.00;
-      final double LO_RATE = 1.00;
-      final double ZERO_RATE = 0.00;
-      final double DEB_CHG = -25.00;
-
-      final double HI_LIMIT = 100000.00;
-      final double MD_LIMIT = 25000.00;
-      final double LO_LIMIT = 10000.00;
-      final double ZERO_LIMIT = 0.00;
-
-      // Print prompt to enter a current balence
-      System.out.print("Enter current balance: ");
-
-      // Read balance
-      Scanner in = new Scanner(System.in);
-      double balance = in.nextDouble();
-
-      // Determine interest rate (or charge) based on current balance
-      //   to compute new balance
-
-      // Your work here
-
-      double newBalance;
-      if (balance > HI_LIMIT)
-         newBalance = balance*(1+HI_RATE/100);
-      else if (balance > MD_LIMIT)
-         newBalance = balance*(1+MD_RATE/100);
-      else if (balance > LO_LIMIT)
-         newBalance = balance*(1+LO_RATE/100);
-      else if (balance < ZERO_LIMIT)
-         newBalance = balance+DEB_CHG;
-      else
-         newBalance = balance;
-
-      System.out.printf("%.2f\n", newBalance);
-   }
-}

1ano/2semestre/poo/src/tp_codecheck/tp01/Table.java

@@ -1,28 +0,0 @@
-package tp_codecheck.tp01;
-
-// Solução do exercício 3
-
-public class Table {
-
-   public static void main(String[] args) {
-      System.out.printf("%s | %s | %s | %s\n", "n", "Hn", "log n", "Hn - log n");
-      int n = 1;
-      while (n <= 1000000) {
-         double f1 = harmonic(n);
-         double f2 = Math.log((double)n);
-         System.out.printf("%d | %.3f | %.3f | %.9f\n", n, f1, f2, f1-f2);
-         n *= 2;
-      }
-   }
-
-   /**
-    * Computes the Harmonic number Hn = 1 + 1/2 + 1/3 + ... + 1/n.
-    */
-   private static double harmonic(int n) {
-      double sum = 0;
-      for (int i = 1; i <= n; i++) {
-         sum += 1/(float)i;
-      }
-      return sum;
-   }
-}

1ano/2semestre/poo/src/tp_codecheck/tp01/Temperature.java

@@ -1,29 +0,0 @@
-package tp_codecheck.tp01;
-
-// Solução do exercício 1
-
-/*
-This is a short Java program to convert
-a temperature from Celsius to Fahrenheit.
-*/
-
-// You may want to import stuff here...
-
-import java.util.Scanner;
-
-public class Temperature {
-   // Create a Scanner to parse standard input:
-   private static Scanner sc = new Scanner(System.in);
-
-   public static void main(String[] args) {
-      // Put your code here
-      System.out.print("Celsius? ");
-      double celcius = sc.nextDouble();
-      double fahrenheit = 1.8*celcius+32;
-      System.out.printf("%f C = %f F\n", celcius, fahrenheit);
-
-      System.out.println("THE END");
-   }
-}
-
-// JMR 2023

1ano/2semestre/poo/src/tp_codecheck/tp02/Array1.md

@@ -1,23 +0,0 @@
-# Exercícios de Arrays
-
-## Ex1
-```java
-final int LENGHT = 100;
-int[] a = new int[LENGHT];
-// Code for filling a ommited
-for (int = 99; i >= 0; i--)
-{
-    System.out.print(a[i]);
-    if (i > 0) { System.out.print(', '); }
-}
-```
-
-## Ex2
-```java
-int[] numbers = new int[100];
-for (int k = 0; k < numbers.length; k++)
-{
-   numbers[k] = k + 1;
-}
-```
-

1ano/2semestre/poo/src/tp_codecheck/tp02/NumberOfDays.java

@@ -1,27 +0,0 @@
-package tp_codecheck.tp02;
-
-import java.util.Scanner;
-
-public class NumberOfDays {
-    public static void main(String[] args)
-    {
-        // Declare and initialize daysOfMonth
-        int[] daysOfMonth = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
-
-        Scanner in = new Scanner(System.in);
-        System.out.print("Month (1 - 12): ");
-        int month = in.nextInt();
-        System.out.print("Year: ");
-        int year = in.nextInt();
-
-        if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
-            // It's a leap year. Adjust the entry for February
-            daysOfMonth[1]+=1;
-        }
-
-        // Get the number of days in the given month
-        int days = daysOfMonth[month-1];
-
-        System.out.println("Number of days: " + days);
-    }
-}

1ano/2semestre/poo/src/tp_codecheck/tp02/Numbers.java

@@ -1,17 +0,0 @@
-package tp_codecheck.tp02;
-
-public class Numbers {
-    public static void main(String[] args) {
-        // Different arrays will be substituted here.
-        int[] values = { 3, 1, 4, 1, 5, 9 };
-        int[] newValues = new int[values.length/2];
-        
-        for (int x = 0; x < values.length; x+=2) {
-            newValues[x/2] = values[x];
-        }
-        
-        for (int i = 0; i < newValues.length; i++) {
-            System.out.println(newValues[i]);
-        }
-    }
-}

1ano/2semestre/poo/src/tp_codecheck/tp02/Strings1.md

@@ -1,9 +0,0 @@
-# Tabela Exercício 1 de Strings
-
-| Question                                                                                                                                                                                                                                                                                    | Answer           |
-|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------|
-| What is the length of the string below?<br>String str = "Java Program"                                                                                                                                                                                                                      | 12               |
-| With str as defined above, give a call to the substring method that returns the substring "gram".                                                                                                                                                                                           | str.substring(8) |
-| Use the string concatenation operator to change the string variable str to contain the string "Java Programming".                                                                                                                                                                           | str += "ming"    |
-| What does the following statement sequence print?<br><br>String str = "Harry";<br>int n = str.length();<br>String mystery = str.substring(0, 1) + str.substring(n - 1, n);<br>System.out.println(mystery);                                                                                  | Hy               |
-| Consider the following statement sequence. If the user provides the input John Q. Public, what is printed? If an error occurs, type error.<br><br>Scanner in = new Scanner(System.in);<br>String first = in.next();<br>String last = in.next();<br>System.out.println(last + ", " + first); | Q., John         |

1ano/2semestre/poo/src/tp_codecheck/tp02/Words.java

@@ -1,12 +0,0 @@
-package tp_codecheck.tp02;
-
-import java.util.Scanner;
-
-public class Words {
-    public static void main(String[] args) {
-        Scanner in = new Scanner(System.in);
-        String word = in.next();
-        word = word.charAt(word.length()-1) + word.substring(1, word.length()-1) + word.charAt(0);
-        System.out.println(word);
-    }
-}

1ano/2semestre/poo/src/tp_codecheck/tp03/part1/TrafficLight1.java

@@ -1,66 +0,0 @@
-package tp_codecheck.tp03.part1;
-
-/**
-   A simulated traffic light.
-*/
-public class TrafficLight1
-{
-   private String color;
-   private int reds;
-
-   /**
-      Constructs a green traffic light.
-   */
-   public TrafficLight1()
-   {
-      this.color = "green";
-      this.reds = 0;
-   }
-
-   /**
-      Constructs a traffic light.
-      @param initialColor the initial color "green", "yellow", or "red"
-   */
-   public TrafficLight1(String initialColor)
-   {
-      this.color = initialColor;
-      this.reds = initialColor == "red" ? 1 : 0;
-   }
-
-   /**
-      Moves this traffic light to the next color.
-   */
-   public void next()
-   {
-      switch (this.color) {
-         case "red":
-            this.color = "green";
-            break;
-         case "green":
-            this.color = "yellow";
-            break;
-         case "yellow":
-            this.color = "red";
-            this.reds += 1;
-            break;
-      }
-   }
-
-   /**
-      Returns the current color of this traffic light.
-      @return the current color
-   */
-   public String getColor()
-   {
-      return this.color;
-   }
-
-   /**
-      Counts how often this traffic light has been red.
-      @return the number of times this traffic light has been red
-   */
-   public int getReds()
-   {
-      return this.reds;
-   }
-}

1ano/2semestre/poo/src/tp_codecheck/tp03/part1/TrafficLight2.java

@@ -1,68 +0,0 @@
-package tp_codecheck.tp03.part1;
-
-/**
-   A simulated traffic light.
-*/
-public class TrafficLight2
-{
-   private int steps;
-
-   /**
-      Constructs a green traffic light.
-   */
-   public TrafficLight2()
-   {
-      this.steps = 0;
-   }
-
-   /**
-      Constructs a traffic light.
-      @param initialColor the initial color "green", "yellow", or "red"
-   */
-   public TrafficLight2(String initialColor)
-   {
-      switch (initialColor) {
-         case "green":
-            this.steps = 0;
-            break;
-         case "yellow":
-            this.steps = 1;
-            break;
-         case "red":
-            this.steps = 2;
-            break;
-      }
-   }
-
-   /**
-      Moves this traffic light to the next color.
-   */
-   public void next()
-   {
-      steps++;
-   }
-
-   /**
-      Returns the current color of this traffic light.
-      @return the current color
-   */
-   public String getColor()
-   {
-      int rem = (this.steps + 1) % 3;
-      if (rem == 0)
-         return "red";
-      else if (rem == 1)
-         return "green";
-      else
-         return "yellow";
-   }
-
-   /**
-      Counts how often this traffic light has been red.
-      @return the number of times this traffic light has been red
-   */
-   public int getReds()
-   {
-      return (this.steps + 1) / 3;
-   }
-}

1ano/2semestre/poo/src/tp_codecheck/tp03/part2/RentalCar.java

@@ -1,72 +0,0 @@
-package tp_codecheck.tp03.part2;
-
-public class RentalCar {
-    private boolean rented;
-    private static int rentedCount = 0;
-    private static int availableCount = 0;
-
-    /**
-     * Constructs a rental car.
-     */
-    public RentalCar() {
-        // your work here
-        rented = false;
-        RentalCar.availableCount++;
-    }
-
-    /**
-     * Get number of cars available.
-     *
-     * @return count of cars that are available
-     */
-    public static int numAvailable() {
-        // your work here
-        return RentalCar.availableCount;
-    }
-
-    /**
-     * Get number of cars rented.
-     *
-     * @return count of cars that are rented
-     */
-    public static int numRented() {
-        // your work here
-        return RentalCar.rentedCount;
-    }
-
-    /**
-     * Try to rent this car.
-     *
-     * @return true if the car was successfully rented, false if it was already
-     * rented
-     */
-    public boolean rentCar() {
-        // your work here
-        if (this.rented) {
-            return false;
-        } else {
-            this.rented = true;
-            RentalCar.rentedCount++;
-            RentalCar.availableCount--;
-            return true;
-        }
-    }
-
-    /**
-     * Return rented car.
-     *
-     * @return true if the car was previously rented and is now returned,
-     * false if it was not previously rented
-     */
-    public boolean returnCar() {
-        // your work here
-        if (this.rented) {
-            this.rented = false;
-            RentalCar.rentedCount--;
-            RentalCar.availableCount++;
-            return true;
-        } else {
-            return false;
-        }
-    }
-}

1ano/2semestre/poo/src/utils/DateYMD.java

@@ -13,6 +13,27 @@ public class DateYMD {
         this.year = year;
     }
 
+    static boolean validMonth(int month) {
+        return month >= 1 && month <= 12;
+    }
+
+    static int monthDays(int month, int year) {
+        if (!validMonth(month))
+            return -1;
+        int[] daysPerMonth = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
+        if (month == 2 && isLeapYear(year))
+            return 29;
+        return daysPerMonth[month - 1];
+    }
+
+    static boolean isLeapYear(int year) {
+        return year % 100 == 0 ? year % 400 == 0 : year % 4 == 0;
+    }
+
+    public static boolean validDate(int day, int month, int year) {
+        return day >= 1 && day <= monthDays(month, year);
+    }
+
     public void set(int day, int month, int year) {
         if (!validDate(day, month, year))
             throw new IllegalArgumentException("Invalid date");
@@ -71,24 +92,4 @@ public class DateYMD {
     public String toString() {
         return String.format("%04d-%02d-%02d", this.year, this.month, this.day);
     }
-    static boolean validMonth(int month) {
-        return month >= 1 && month <= 12;
-    }
-
-    static int monthDays(int month, int year) {
-        if (!validMonth(month))
-            return -1;
-        int[] daysPerMonth = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
-        if (month == 2 && isLeapYear(year))
-            return 29;
-        return daysPerMonth[month - 1];
-    }
-
-    static boolean isLeapYear(int year) {
-        return year % 100 == 0 ? year % 400 == 0 : year % 4 == 0;
-    }
-
-    public static boolean validDate(int day, int month, int year) {
-        return day >= 1 && day <= monthDays(month, year);
-    }
 }