diff --git a/StandarInput/pom.xml b/StandarInput/pom.xml
new file mode 100644
index 0000000..f7786b7
--- /dev/null
+++ b/StandarInput/pom.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.example</groupId>
+    <artifactId>StandarInput</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>21</maven.compiler.source>
+        <maven.compiler.target>21</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>21</source>
+                    <target>21</target>
+                    <compilerArgs>--enable-preview</compilerArgs>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
\ No newline at end of file
diff --git a/StandarInput/src/main/java/Employee.java b/StandarInput/src/main/java/Employee.java
new file mode 100644
index 0000000..8c64a73
--- /dev/null
+++ b/StandarInput/src/main/java/Employee.java
@@ -0,0 +1,67 @@
+public class Employee {
+    // Campos privados
+    private String name;
+    private String email;
+    private int age;
+    private double salary;
+
+    // Constructor
+    public Employee(String name, String email, int age, double salary) {
+        this.name = name;
+        this.email = email;
+        this.age = age;
+        this.salary = salary;
+    }
+
+    // Getters y Setters
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public void setAge(int age) {
+        if (age >= 18) {  // Validación básica: edad mínima 18
+            this.age = age;
+        } else {
+            System.out.println("Error: La edad debe ser al menos 18 años");
+        }
+    }
+
+    public double getSalary() {
+        return salary;
+    }
+
+    public void setSalary(double salary) {
+        if (salary >= 0) {  // Validación básica: salario no negativo
+            this.salary = salary;
+        } else {
+            System.out.println("Error: El salario no puede ser negativo");
+        }
+    }
+
+    // Método toString para representación como cadena
+    @Override
+    public String toString() {
+        return "Employee{" +
+                "name='" + name + '\'' +
+                ", email='" + email + '\'' +
+                ", age=" + age +
+                ", salary=" + salary +
+                '}';
+    }
+}
\ No newline at end of file
diff --git a/StandarInput/src/main/java/EmployeeFileWriter.java b/StandarInput/src/main/java/EmployeeFileWriter.java
new file mode 100644
index 0000000..83466a7
--- /dev/null
+++ b/StandarInput/src/main/java/EmployeeFileWriter.java
@@ -0,0 +1,45 @@
+import java.io.FileWriter;
+import java.io.PrintWriter;
+import java.io.IOException;
+
+public class EmployeeFileWriter {
+    public static void main(String[] args) {
+        // Crear un array con 10 empleados de ejemplo
+        Employee[] employees = {
+                new Employee("Juan Pérez", "juan.perez@empresa.com", 32, 15000.0),
+                new Employee("María García", "maria.garcia@empresa.com", 28, 18000.0),
+                new Employee("Carlos López", "carlos.lopez@empresa.com", 45, 41000.0),
+                new Employee("Ana Martínez", "ana.martinez@empresa.com", 29, 16000.0),
+                new Employee("Luis Rodríguez", "luis.rodriguez@empresa.com", 38, 11000.0),
+                new Employee("Sofía Hernández", "sofia.hernandez@empresa.com", 31, 17000.0),
+                new Employee("Pedro Díaz", "pedro.diaz@empresa.com", 42, 15000.0),
+                new Employee("Laura Sánchez", "laura.sanchez@empresa.com", 27, 14000.0),
+                new Employee("Jorge Ramírez", "jorge.ramirez@empresa.com", 35, 19000.0),
+                new Employee("Elena Flores", "elena.flores@empresa.com", 40, 13000.0)
+        };
+
+        // Escribir los empleados en el archivo
+        try (FileWriter fileWriter = new FileWriter("employees.txt");
+             PrintWriter printWriter = new PrintWriter(fileWriter)) {
+
+            // Escribir encabezado
+            printWriter.println("Lista de Empleados");
+            printWriter.println("==================");
+            printWriter.println();
+
+            // Escribir cada empleado
+            for (Employee emp : employees) {
+                printWriter.println("Nombre: " + emp.getName());
+                printWriter.println("Email: " + emp.getEmail());
+                printWriter.println("Edad: " + emp.getAge());
+                printWriter.println("Salario: " + emp.getSalary());
+                printWriter.println("------------------");
+            }
+
+            System.out.println("Los datos de los empleados se han guardado en employees.txt");
+
+        } catch (IOException e) {
+            System.err.println("Error al escribir en el archivo: " + e.getMessage());
+        }
+    }
+}
diff --git a/StandarInput/src/main/java/Intern.java b/StandarInput/src/main/java/Intern.java
new file mode 100644
index 0000000..e9008a7
--- /dev/null
+++ b/StandarInput/src/main/java/Intern.java
@@ -0,0 +1,39 @@
+public class Intern extends Employee {
+    // Constante para el límite de salario
+    public  static final double SALARY_LIMIT = 20000.0;
+
+    // Constructor
+    public Intern(String name, String email, int age, double salary) {
+        super(name, email, age, salary);
+        validateSalary(salary);
+    }
+
+    // Sobrescribir el setter de salario para aplicar el límite
+    @Override
+    public void setSalary(double salary) {
+        validateSalary(salary);
+        super.setSalary(salary);
+    }
+
+    // Método privado para validar el salario
+    private void validateSalary(double salary) {
+        if (salary > SALARY_LIMIT) {
+            throw new IllegalArgumentException("El salario de un interno no puede exceder " + SALARY_LIMIT);
+        }
+        if (salary < 0) {
+            throw new IllegalArgumentException("El salario no puede ser negativo");
+        }
+    }
+
+    // Método toString específico para Intern
+    @Override
+    public String toString() {
+        return "Intern{" +
+                "name='" + super.getName() + '\'' +
+                ", email='" + super.getEmail() + '\'' +
+                ", age=" + super.getAge() +
+                ", salary=" + super.getSalary() +
+                ", salaryLimit=" + SALARY_LIMIT +
+                '}';
+    }
+}
\ No newline at end of file