diff --git a/src/Employee.java b/src/Employee.java
new file mode 100644
index 0000000..c53365f
--- /dev/null
+++ b/src/Employee.java
@@ -0,0 +1,32 @@
+class Employee {
+    private String name;
+    private String email;
+    private int age;
+    private double salary;
+
+    public Employee(String name, String email, int age, double salary) {
+        this.name = name;
+        this.email = email;
+        this.age = age;
+        this.salary = salary;
+    }
+    public String getName() {
+        return name;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public double getSalary() {
+        return salary;
+    }
+
+    public void setSalary(double salary) {
+        this.salary = salary;
+    }
+}
\ No newline at end of file
diff --git a/src/Intern.java b/src/Intern.java
new file mode 100644
index 0000000..d23c331
--- /dev/null
+++ b/src/Intern.java
@@ -0,0 +1,17 @@
+class Intern extends Employee {
+    public static final double MAX_SALARY = 20000;
+
+    public Intern(String name, String email, int age, double salary) {
+        super(name, email, age, salary);
+        setSalary(salary);
+    }
+
+    @Override
+    public void setSalary(double salary) {
+        if (salary > MAX_SALARY) {
+            throw new IllegalArgumentException("El salario máximo para un becario es de " + MAX_SALARY + "€");
+        } else {
+            super.setSalary(salary);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Main.java b/src/Main.java
new file mode 100644
index 0000000..bb8f386
--- /dev/null
+++ b/src/Main.java
@@ -0,0 +1,27 @@
+import java.io.FileWriter;
+import java.io.IOException;
+public class Main {
+    public static void main(String[] args) throws IOException {
+        Employee[] employees = {
+                new Employee("John", "john@example.com", 25, 50000),
+                new Employee("Jane", "jane@example.com", 28, 60000),
+                new Employee("Bob", "bob@example.com", 22, 55000),
+                new Employee("Alice", "alice@example.com", 30, 70000),
+                new Employee("Charlie", "charlie@example.com", 24, 48000),
+                new Intern("Eva", "eva@example.com", 26, 15000),
+                new Intern("David", "david@example.com", 29, 20000),
+                new Intern("Grace", "grace@example.com", 23, 12000),
+                new Intern("Frank", "frank@example.com", 27, 16000),
+                new Intern("Helen", "helen@example.com", 31, 19000)
+        };
+        FileWriter writer = new FileWriter("employees.txt", true);
+        for (Employee employee : employees) {
+            writer.write("Name: " + employee.getName() + "\n");
+            writer.write("Email: " + employee.getEmail() + "\n");
+            writer.write("Age: " + employee.getAge() + "\n");
+            writer.write("Salary: " + employee.getSalary() + "\n");
+            writer.write("\n");
+        }
+        writer.close();
+    }
+}