MArc

lab-java-basics-es.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

src/Main.java

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+import classes.Employee;
+import classes.Intern;
+
+import javax.naming.ldap.ManageReferralControl;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class Main {
+    public static void main (String[] arg){
+
+        //EXERCICE 1
+        System.out.println("EXERCICE 1 ----");
+        Integer[] numbers = {1, 2, 3, 4, 5};
+
+        int max = numbers[0];
+        for (int number : numbers)
+            if (number > max) {
+                max = number;
+            }
+        int min =numbers[0];
+        for (int number : numbers)
+            if (number < min){
+                min = number;
+            }
+        int difference = max - min;
+        System.out.println("The difference between the higher (" + max + ") and the lowest (" + min + ") number is " + difference);
+
+        //EXERCICE 2
+        System.out.println("EXERCICE 2 ------");
+        Integer[] numbers2 = {-2, 5, 18, 20, -20};
+        int smallest = numbers2[0];
+        for  (int number2 : numbers2)
+            if (number2 < smallest){
+                smallest = number2;
+            }
+        int position = 0;
+
+        for (int i = 0; i < numbers2.length; i++){
+            if(numbers2[i] == smallest){ position = i;}
+        }
+        System.out.println("The lowest element is " + numbers2[position]);
+
+        Integer[] result = new Integer[numbers2.length - 1];
+        for (int j = 0, k = 0; j < numbers2.length; j++) {
+            if (j != position) {
+                result[k++] = numbers2[j];
+            }
+        }
+
+        int smallest2 = result[0];
+        for (int result1 : result)
+            if (result1 < smallest2)
+            {smallest2 = result1;}
+        System.out.println("The second lowest element is " + smallest2);
+    // EXERCICE 3
+        System.out.println("EXERCICE 3 ---------");
+        Intern intern1 = new Intern("Marc",28,23000,true,2);
+        Intern intern2 = new Intern("Montserrat", 22, 18000, false,1);
+        Intern intern3 = new Intern ("Paula", 25, 20000, true, 2);
+        Intern intern4 = new Intern ("Buggy", 27, 19000, false, 7);
+        Intern intern5 = new Intern ("Kate", 31, 21000, false, 10);
+        Employee employee1 = new Employee("Rafa", 26, 25000, true);
+        Employee employee2 = new Employee("Judit", 24, 35000, true);
+        Employee employee3 = new Employee("Moha", 23, 26000, true);
+        Employee employee4 = new Employee("Laura", 34, 32000,  true);
+        Employee employee5 = new Employee("April", 22, 21000,false);
+
+
+
+        List<Employee> people = new ArrayList<>();
+        people.add(intern1);
+        people.add(intern2);
+        people.add(intern3);
+        people.add(intern4);
+        people.add(intern5);
+        people.add(employee1);
+        people.add(employee2);
+        people.add(employee3);
+        people.add(employee4);
+        people.add(employee5);
+
+        // loop to every employee
+        for (Employee person : people) {
+            System.out.print(person.getName() + " is " + person.getAge() + " years old, " );
+            if (person.isUniversityGrade()){
+                System.out.print("has an university degree,");}
+            else {System.out.print("doesn't have an universtiy degree,");}
+            if(person instanceof Intern){
+                System.out.print("has " + ((Intern) person).getYearsExperience() + " years of experience ");
+            }
+            System.out.println("and has set a salary of: " + person.getSalary() + "€ per year");
+
+        }
+        //try to increase the salary over the limit of intern
+        intern2.setSalary(20000);
+        intern4.setSalary(23000);
+
+        }
+
+
+    }
+

src/classes/Employee.java

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+package classes;
+
+public class Employee {
+private String name;
+private int age;
+int salary;
+private boolean universityGrade;
+
+public Employee (String name, int age, int salary, boolean university) {
+    this.name = name;
+    this.age = age;
+    this.salary = salary;
+    universityGrade = university;
+}
+//getters and setters
+    public String getName() {
+        return name;
+    }
+    public void setName(String name) {
+        this.name = name;
+    }
+    public int getAge() {
+        return age;
+    }
+    public void setAge(int age) {
+        this.age = age;
+    }
+    public int getSalary() {
+        return salary;
+    }
+    public void setSalary(int salary) {
+        this.salary = salary;
+    }
+    public boolean isUniversityGrade() {
+        return universityGrade;
+    }
+    public void setUniversityGrade(boolean universityGrade) {
+        this.universityGrade = universityGrade;
+    }
+}

src/classes/Intern.java

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+package classes;
+
+public class Intern extends Employee{
+        private int yearsExperience;
+        private static final int maxSalary = 20000;
+
+    public Intern(String name, int age, int salary, boolean university, int yearsExperience) {
+        super(name, age, salary, university);
+        this.yearsExperience = yearsExperience;
+    if (salary > maxSalary){
+        System.out.println("The salary exceed the limit for intern: " + name);
+        System.out.println("Salary adjusted to: 20.000€");
+        super.setSalary(maxSalary);}
+    }
+// if an intern wants to update his salary after being created, we enforce the rule of maxSalary
+    @Override
+    public void setSalary(int salary) {
+        if (salary > maxSalary) {
+            System.out.println(getName() + " salary exceeds the max limit for interns. Setting to " + maxSalary +"€ allowed");
+            super.setSalary(maxSalary);
+        } else {
+            super.setSalary(salary);
+            System.out.println(getName() + " salary have been updated to: " + salary +"€");
+        }
+    }
+    //getter and setter new variable
+    public int getYearsExperience(){return yearsExperience;}
+    public void setYearsExperience(int yearsExperience) {
+        this.yearsExperience = yearsExperience;}
+    }
+