package devcode.module_06x03_wildcard;

import java.util.ArrayList;

import java.util.List;

public class App {

// Java Generics Unbounded Wildcard

public static void mostrarElementosUnbounded(List<? /*extends Object*/> elements){

System.out.println("{***Unbounded method***}");

for(Object obj : elements){

if(obj instanceof Perro) {

System.out.println(((Perro)obj).getTipo());

}else if(obj instanceof Gato){

System.out.println(((Gato)obj).getTipo());

}

}

}

// Java Generics Upper Bounded Wildcard

public static void mostrarElementosUpperBounded(List<? extends Animal> elements) {

System.out.println("{***Upper Bounded method***}");

for (Animal ani : elements) {

System.out.println(ani.getTipo());

}

}

//

// Java Generics Lower Wildcard

public static void mostrarElementosLowerBounded(List<? super Perro> elements){

System.out.println("{***Lower Bounded method***}");

for (Object obj : elements) {

System.out.println(((Animal)obj).getTipo());

}

}

public static void main(String[] args) {

/** Codigo un bounded **/

Perro p = new Perro("Perro Dalmata");

Perro p1 = new Perro("Pastor Aleman");

List<Perro> listA = new ArrayList<>();

listA.add(p);

listA.add(p1);

// Gato g1= new Gato("Gato siames");

// List<Gato> listA = new ArrayList<>();

// listA.add(g1);

mostrarElementosUnbounded(listA);

/** __________________________ **/

/** Codigo upper bounded **/

Animal b1 = new Perro("Perro Dalmata");

Perro b2 = new Perro("Pastor Aleman");

Animal b3= new Gato("Gato siames");

List<Animal> listB = new ArrayList<>();

listB.add(b1);

listB.add(b2);

listB.add(b3);

mostrarElementosUpperBounded(listB);

// /** __________________________ **/

/** Codigo lower bounded **/

Animal c1 = new Perro("Perro Dalmata");

Perro c2 = new Perro("Pastor Aleman");

Animal c3= new Gato("Gato siames");

Gato c4= new Gato("Gato persa");

List<Animal> listC = new ArrayList<>();

listC.add(c1);

listC.add(c2);

listC.add(c3);

listC.add(c4);

mostrarElementosLowerBounded(listC);

}

}