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Unidad 2 Java is a hands-on learning repository organized into six progressive Talleres (workshops 7–12). Each taller focuses on a single core Object-Oriented Programming concept, teaching it through heavily annotated, fully runnable Java source files. Correct patterns are marked with ✅ and deliberate error examples with ❌, so you can see both what works and why some approaches fail — without ever leaving your editor.

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What You Will Learn

Access Modifiers

Taller 7 — Understand public, private, and protected visibility. Build encapsulated classes with validated getters and setters.

Inheritance

Taller 8 — Use the extends keyword to create class hierarchies. Explore parent–child relationships and inheritance pitfalls.

The super Keyword

Taller 9 — Call parent constructors and overridden methods explicitly with super. Understand when and why it is required.

Polymorphism

Taller 10 — Override methods with @Override, store subclass instances in parent-type variables, and dispatch behavior at runtime.

Abstract Classes

Taller 11 — Declare abstract classes and methods to enforce contracts across a class hierarchy while sharing common implementation.

Interfaces

Taller 12 — Define and implement interfaces to achieve flexible, multiple-capability designs decoupled from the class hierarchy.

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Repository Structure

unidad2_java/
├── Taller7/      # Access modifiers & encapsulation
│   ├── ejercicio_1/   # Empleado class
│   ├── ejercicio_2/   # CuentaBancaria class
│   └── ejercicio_3/   # Utilidades static methods
├── taller8/      # Inheritance with extends
│   ├── ejercicio1/   # Vehiculo → Coche
│   ├── ejercicio2/   # Persona → Estudiante
│   ├── ejercicio3/   # Empleado → Gerente
│   └── ejercicio4/   # Multiple inheritance pitfalls
├── Taller9/      # super keyword usage
├── Taller10/     # Polymorphism & @Override
├── Taller11/     # Abstract classes
└── Taller12/     # Interfaces
Each subdirectory contains the domain class(es) for the exercise alongside a Prueba / Main driver class that wires everything together and prints annotated output to the console.

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Prerequisites

  • Java 11 or higher — the exercises rely on standard Java SE APIs available since Java 11.
  • A text editor or IDE — VS Code, IntelliJ IDEA, Eclipse, or any editor of your choice.
  • Basic Java syntax familiarity — variables, methods, and classes. No prior OOP knowledge is assumed beyond that.
Each taller includes a Main class you can compile and run directly. Incorrect examples (❌) are intentionally included to demonstrate compile errors — do not try to compile those files.

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