diff --git a/src/classes/Employee.java b/src/classes/Employee.java
new file mode 100644
index 0000000..aeb6d45
--- /dev/null
+++ b/src/classes/Employee.java
@@ -0,0 +1,43 @@
+package classes;
+
+public class Employee {
+    private String name;
+    private String email;
+    private int age;
+    private int salary;
+
+    protected Employee(){
+
+    }
+    /*public Employee(String name, String email, int age, int salary) {
+        setName(name);
+        setEmail(email);
+        setAge(age);
+        setSalary(salary);
+    }*/
+    public String getName(){
+        return this.name;
+    }
+    public String getEmail(){
+        return this.email;
+    }
+    public int getAge(){
+        return this.age;
+    }
+    public int getSalary(){
+        return this.salary;
+    }
+    protected void setName(String name){
+        this.name = name;
+    }
+    protected void setEmail(String email){
+        this.email = email;
+    }
+    protected void setAge(int age){
+        this.age = age;
+    }
+    protected void setSalary(int salary){
+        this.salary = salary;
+    }
+}
+
diff --git a/src/classes/Intern.java b/src/classes/Intern.java
new file mode 100644
index 0000000..a8098be
--- /dev/null
+++ b/src/classes/Intern.java
@@ -0,0 +1,21 @@
+package classes;
+public class Intern extends Employee{
+    private static int salaryLimit = 20000;
+
+    public Intern(String name, String email, int age, int salary){
+        if(setSalaryWithLimit(salary)){
+            setName(name);
+            setEmail(email);
+            setAge(age);
+        }
+    }
+
+   public boolean setSalaryWithLimit(int salary){
+        if (salary<this.salaryLimit){
+            this.setSalary(salary);
+            return true;
+        }else {
+            return false;
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/mainPackage/Main.java b/src/mainPackage/Main.java
new file mode 100644
index 0000000..9aa8056
--- /dev/null
+++ b/src/mainPackage/Main.java
@@ -0,0 +1,36 @@
+package mainPackage;
+import classes.Intern;
+
+import java.io.FileWriter;
+import java.io.IOException;
+import java.util.Random;
+
+public class Main {
+    public static void main(String[] args) throws IOException {
+        Random rand = new Random();
+        FileWriter writer = new FileWriter("demo.txt", true);
+        String[] listadoNombres = {"Xavi","Jose","Lucia","Marta","Thais","Carlos","Alejandro","Neus","Antonio"," Lidia","Daniel","Carolina","Victor","Monica","Ricardo","Laura","Amanda","Aitor","Belen","Francisco"};
+        String[] listadoDominios = {"@email.com","@gmail.com","@outlook.es","@hotmail.com","@yopmail.com"};
+        Intern[] empleado = new Intern[10];
+        String name;
+        String email;
+        int age;
+        int salary;
+
+        for (int i=0; i<=9;i++) {
+            name = listadoNombres[rand.nextInt(listadoNombres.length)];
+            email = name+listadoDominios[rand.nextInt(listadoDominios.length)];
+            age = rand.nextInt(100);
+            salary = rand.nextInt(30000);
+
+            empleado[i] = new Intern(name,email,age,salary);
+
+            if(empleado[i].getName()==null){
+                i--;
+            }else{
+                writer.write("Empleado número "+(i+1)+": "+empleado[i].getName()+" "+empleado[i].getEmail()+" "+empleado[i].getAge()+" "+empleado[i].getSalary()+" \n");
+            }
+        }
+        writer.close();
+    }
+}