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Ejercicio 1 introduces the two most common uses of super in a single, tightly scoped example. Persona is the parent class that holds a person’s name and age. Empleado extends it to add an employment department. Rather than re-initialising nombre and edad itself, Empleado passes those values straight up to Persona’s constructor via super(nombre, edad). When printing details, Empleado also delegates to Persona’s mostrarDetalles() before printing its own extra line, so the output is built cooperatively across both classes.

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The Persona Class

Persona is a plain base class with two package-visible fields and a single method that prints them.
Taller9/Persona.java
package Taller9;

public class Persona {
    String nombre;
    int edad;

    public Persona(String nombre, int edad) {
        this.nombre = nombre;
        this.edad = edad;
    }

    public void mostrarDetalles() {
        System.out.println("Nombre: " + nombre);
        System.out.println("Edad: " + edad);
    }
}
nombre and edad use package-level (default) visibility, meaning they are accessible to any class in the same Taller9 package — including Empleado.

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The Empleado Class

Empleado extends Persona and adds the departamento field. The constructor calls super(nombre, edad) as its first statement, handing off the job of initialising the inherited fields to Persona. The overridden mostrarDetalles() method calls super.mostrarDetalles() first, then appends the department line.
Taller9/Empleado.java
package Taller9;

public class Empleado extends Persona {
    String departamento;

    public Empleado(String nombre, int edad, String departamento) {
        super(nombre, edad); // Llama al constructor de la clase base Persona
        this.departamento = departamento;
    }

    @Override
    public void mostrarDetalles() {
        super.mostrarDetalles(); // Llama al método mostrarDetalles de la clase base Persona
        System.out.println("Departamento: " + departamento);
    }
}

​
How super.mostrarDetalles() Works

When empleado1.mostrarDetalles() is called, execution flows like this: 
Empleado.mostrarDetalles()
  └─► super.mostrarDetalles()   ← runs Persona.mostrarDetalles()
        prints "Nombre: Juan"
        prints "Edad: 30"
  └─► prints "Departamento: Ventas"
Without the super.mostrarDetalles() call, Empleado would have to duplicate Persona’s print logic. Using super keeps the code DRY and guarantees that any future change to Persona.mostrarDetalles() is automatically reflected in Empleado.

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Main Program

Taller9/MainEjercicio1.java
package Taller9;

public class MainEjercicio1 {
    public static void main(String[] args) {
        Empleado empleado1 = new Empleado("Juan", 30, "Ventas");
        System.out.println("Detalles del Empleado:");
        empleado1.mostrarDetalles();

        System.out.println("\nDetalles de la Persona (a través de Empleado):");
        Persona persona1 = new Persona("Maria", 25);
        persona1.mostrarDetalles();
    }
}

​
Expected output

Detalles del Empleado:
Nombre: Juan
Edad: 30
Departamento: Ventas

Detalles de la Persona (a través de Empleado):
Nombre: Maria
Edad: 25

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Compile & Run

# From the project root (parent of the Taller9/ directory)
javac Taller9/Persona.java Taller9/Empleado.java Taller9/MainEjercicio1.java
java Taller9.MainEjercicio1

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