Petros Kostenidis - Week_2_Lab_1 : Complete

src/Company/Employee.java

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+package Company;
+
+public class Employee {
+    //Attributes
+    private String name;
+    private String surname;
+    private String birthday;
+    private String address;
+    private String email;
+    private String id;
+    private int socialSecurityNumber;
+    private String position;
+    private int level;
+    private double salary;
+
+    //Constructor
+    public Employee(String name, String surname, String birthday, String address, String email, String id, int socialSecurityNumber, String position, int level, double salary) {
+        this.name = name;
+        this.surname = surname;
+        this.birthday = birthday;
+        this.address = address;
+        this.email = email;
+        this.id = id;
+        this.socialSecurityNumber = socialSecurityNumber;
+        this.position = position;
+        this.level = level;
+        this.salary = salary;
+    }
+
+    //Getters
+    public String getName() {
+        return name;
+    }
+
+    public String getSurname() {
+        return surname;
+    }
+
+    public String getBirthday() {
+        return birthday;
+    }
+
+    public String getAddress() {
+        return address;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public int getSocialSecurityNumber() {
+        return socialSecurityNumber;
+    }
+
+    public String getPosition() {
+        return position;
+    }
+
+    public int getLevel() {
+        return level;
+    }
+
+    public double getSalary() {
+        return salary;
+    }
+
+    //Setters
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public void setSurname(String surname) {
+        this.surname = surname;
+    }
+
+    public void setBirthday(String birthday) {
+        this.birthday = birthday;
+    }
+
+    public void setAddress(String address) {
+        this.address = address;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public void setSocialSecurityNumber(int socialSecurityNumber) {
+        this.socialSecurityNumber = socialSecurityNumber;
+    }
+
+    public void setPosition(String position) {
+        this.position = position;
+    }
+
+    public void setLevel(int level) {
+        this.level = level;
+    }
+
+    public void setSalary(double salary) {
+        this.salary = salary;
+    }
+
+    //Methods
+    public void information() {
+        System.out.println("======================================================" +
+                "\nThe Information for Employee " + name + " are the following:" +
+                "\n======================================================" +
+                "\nName: " + name +
+                "\nSurname: " + surname +
+                "\nBirthday: " + birthday +
+                "\nAddress: " + address +
+                "\nemail: " + email +
+                "\nID: " + id +
+                "\nSocialSecurityNumber: " + socialSecurityNumber +
+                "\nPosition: " + position +
+                "\nLevel: " + level +
+                "\nSalary: " + salary + " €" +
+                "\n======================================================");
+    }
+
+    public void setBonus(double bonus) {
+        this.salary = salary + bonus;
+    }
+}

src/Company/Intern.java

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+package Company;
+
+public class Intern extends Employee {
+
+    //Constructor
+    public Intern(String name, String surname, String birthday, String address, String email, String id, int socialSecurityNumber, String position, int level, double salary) {
+        super(name, surname, birthday, address, email, id, socialSecurityNumber, position, level, salary);
+    }
+}

src/Company/Registration.java

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+package Company;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Scanner;
+
+public class Registration {
+    public static void main(String[] args) {
+
+        //3. Create an Employee class to represent an employee of a company. Add all relevant properties and behaviors
+        //      that you might need but you have to include a salary property. Don't forget to add getters and setters.
+
+        //4. Create an Intern class that extends from Employee. All the Interns have a salary limit of 20000 (constant).
+        //      You must validate if an intern is created (or salary updated) with a bigger salary than the max. The max value is set.
+
+        //5. Write a program that creates 10 Employees and print it al the properties.
+
+        Scanner scanner = new Scanner(System.in);
+
+
+        System.out.println("""
+                ------------------------------------------------------------------------------
+                If you want to do the calculation automatic answer: true
+                If you want to do the calculation manually answer: false""");
+
+
+        boolean autoCalc = scanner.nextBoolean();
+
+        if (!autoCalc) {
+            System.out.println("""
+                    ------------------------------------------------------------------------------
+                    Enter the following information about the new Employee with the correct order:
+                    Name, Surname, Birthday, Address, email, ID, Social Security Number, Position, Level, Salary""");
+
+            String name = scanner.nextLine();
+            String surname = scanner.nextLine();
+            String birthday = scanner.nextLine();
+            String address = scanner.nextLine();
+            String email = scanner.nextLine();
+            String id = scanner.nextLine();
+            int socialSecurityNumber = scanner.nextInt();
+            scanner.nextLine();
+            String position = scanner.nextLine();
+            int level = scanner.nextInt();
+            scanner.nextLine();
+            double salary = scanner.nextDouble();
+
+            System.out.println("""
+                    ------------------------------------------------------------------------------
+                    Is this employee an intern?""");
+
+            boolean interntrue = scanner.nextBoolean();
+
+            Employee emp1;
+
+            do
+                if (interntrue && salary > 20000) {
+                    System.out.println("""
+                             ------------------------------------------------------------------------------
+                            All the Interns have a salary limit of 20000!
+                            Please re-enter new amount""");
+                    salary = scanner.nextDouble();
+
+                } while (interntrue && salary > 20000);
+
+
+            if (!interntrue) {
+                emp1 = new Employee(name, surname, birthday, address, email, id, socialSecurityNumber, position, level, salary);
+            } else {
+                emp1 = new Intern(name, surname, birthday, address, email, id, socialSecurityNumber, position, level, salary);
+            }
+
+            emp1.information();
+
+            if (interntrue && emp1.getSalary() == 20000) {
+                System.out.println("""
+                        All the Interns have a salary limit of 20000, therefore this employee can not get a bonus !""");
+                System.exit(0);
+            }
+
+            System.out.println("""
+                    ----------------------------------------------------------------------
+                    Enter the next bonus amount for the employer:""");
+
+            emp1.setBonus(scanner.nextDouble());
+
+            do
+                if (interntrue && emp1.getSalary() > 20000) {
+                    System.out.println("""
+                             ------------------------------------------------------------------------------
+                            All the Interns have a salary limit of 20000!
+                            Please re-enter new bonus, so that the sum is not greater than 20000""");
+                    emp1.setBonus(scanner.nextDouble());
+
+                } while (interntrue && emp1.getSalary() > 20000);
+
+
+            System.out.println("The Salary plus the bonus of " + name + " " + surname + "is: " + emp1.getSalary());
+        } else {
+
+            List<Employee> employees = new ArrayList<>();
+
+            employees.add(new Employee("Gustav", "Paloski", "19/07/1985", "Ravestreet 53", "guPalo@gmail.com", "GUPALO", 422525909, "Mechanical Engineer", 3, 3500));
+            employees.add(new Employee("Peri", "Mango", "17/07/1985", "Nordistreet 53", "perima@gmail.com", "PERIMA", 852156588, "Engineering Manager", 6, 10000));
+            employees.add(new Employee("Niko", "Toski", "19/08/1985", "Eleimonor 53", "nitokoski@gmail.com", "NISKIT", 136659586, "Electrical Engineer", 3, 3700));
+            employees.add(new Intern("Lary", "limou", "19/07/1989", "Mordika 53", "lalirimou@gmail.com", "lALIR", 789654357, "Automation Engineer", 4, 6000));
+            employees.add(new Employee("Helen", "Depathe", "12/02/1995", "Harilaou 53", "bepanthen85@gmail.com", "HEDEPA", 763124865, "Hand Worker", 1, 2000));
+            employees.add(new Employee("Susan", "Neifola", "06/03/1990", "Kaisie 53", "kimame@gmail.com", "SANFOLA", 958462352, "Mechanical Engineer", 3, 3500));
+            employees.add(new Intern("Dmitry", "Koronovitsch", "23/04/1975", "Senofarstreet 53", "nustazo@gmail.com", "DIKORO", 112156811, "Hand Worker", 2, 2300));
+            employees.add(new Employee("Giovani", "Garcia", "30/012/1998", "Bankisa 53", "denTheloAllopia@gmail.com", "GIGAVANI", 246885931, "Hand Worker", 1, 2000));
+            employees.add(new Intern("Linore", "Aloma", "01/04/1985", "Drakainas 53", "tola56@gmail.com", "LUCYPA", 455669852, "Hand Worker", 1, 2000));
+            employees.add(new Employee("Zak", "Meno", "14/01/1989", "Maindo 53", "paokararegate4@gmail.com", "MEZAK", 789654858, "Electrical Engineer", 3, 3700));
+
+            for (Employee employee : employees) {
+                employee.information();
+            }
+
+        }
+    }
+}

src/DifferenceMaxMin/DifferenceMaxMin.java

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+package DifferenceMaxMin;
+
+import java.util.Arrays;
+import java.util.Scanner;
+
+public class DifferenceMaxMin {
+    public static void main(String[] args) {
+
+        //1. Write a method in Java to get the difference between the largest and smallest values in an array of integers.
+        //      The length of the array must be 1 and above. Use loops and conditionals to develop the algorithm.
+
+        Scanner scanner = new Scanner(System.in);
+        //ArrayList<String> list = new ArrayList<String>();
+
+        System.out.println("-------------------------------------\n\n" +
+                "Enter the size of your preferred array please...");
+        int size = scanner.nextInt();
+        if (size < 2) {
+            System.out.println("Need at least 2 elements !\n" +
+                    "Try again !");
+            System.exit(0); // cleanly terminates the program
+        }
+        int[] List = new int[size];
+
+        System.out.println("Enter one by one " + size + " integer numbers");
+        for (int i = 0; i < size; i++) {
+            List[i] = scanner.nextInt();
+        }
+
+        System.out.println("---Information about the List that you Created---\n" +
+                "-------------------------------------------------\n\n" +
+                "List: " + Arrays.toString(List));
+
+        int maxList = List[0];
+        int minList = List[0];
+        int doubleChecker = List[0];
+        int doubleCounter = 0;
+
+        for (int i = 0; i < size; i++) {
+            if (List[i] == List[0]) {
+                doubleCounter++;
+            }
+            if (maxList <= List[i]) {
+                maxList = List[i];
+            }
+            if (minList >= List[i]) {
+                minList = List[i];
+            }
+        }
+
+
+        int dif = maxList - minList;
+        System.out.println("1. The difference between the largest (" + maxList + ") and smallest (" + minList + ") values in your List is:     " + dif);
+
+        //2. Write a method in Java to find the smallest and second smallest elements of a given array and print it in the console.
+        //      Use loops and conditionals to develop the algorithm.
+
+        int[] List2 = new int[size - 1];
+        int step = 0;
+        int minList2 = 0;
+
+        if (doubleCounter == size) {
+            minList2 = minList;
+        } else {
+            for (int i = 0; i < size; i++) {
+                if (minList != List[i]) {
+                    List2[step] = List[i];
+                    step++;
+                }
+            }
+
+            minList2 = List2[0];
+
+            for (int i = 0; i < (size - 1); i++) {
+                if (minList2 >= List2[i]) {
+                    minList2 = List2[i];
+                }
+            }
+        }
+        System.out.println("2a. Smallest Element:     " + minList);
+        System.out.println("2b. Second Smallest Element:     " + minList2);
+    }
+}