#29 - Java

Author: Josegs95

Roadmap/29 - SOLID ISP/java/Josegs95.java

@@ -0,0 +1,153 @@
+public class Josegs95 {
+    public static void main(String[] args) {
+        //Ejercicio
+        //Forma incorrecta
+        WrongPigeon pidgeon1 = new WrongPigeon();
+        WrongHuman human1 = new WrongHuman();
+
+        pidgeon1.walk();
+        pidgeon1.fly();
+        human1.walk();
+        human1.fly();
+
+        //Forma correcta
+        Pigeon pigeon2 = new Pigeon();
+        Human human2 = new Human();
+
+        pigeon2.fly();
+        pigeon2.walk();
+        human2.walk();
+
+        //Reto
+        new Josegs95().retoFinal();
+    }
+
+    public void retoFinal(){
+        OldPrinter printer1 = new OldPrinter();
+        MediumPrinter printer2 = new MediumPrinter();
+        ModernPrinter printer3 = new ModernPrinter();
+
+        printer1.print("Texto ejemplo");
+        printer2.print("Texto ejemplo");
+        printer3.print("Texto ejemplo");
+
+        System.out.println(printer3.scan());
+        printer3.fax("Texto por fax");
+    }
+
+    //Forma incorrecta
+    public interface WrongAnimal{
+        public void walk();
+        public void fly();
+    }
+    public static class WrongPigeon implements WrongAnimal{
+
+        @Override
+        public void walk() {
+            System.out.println("La paloma camina...");
+        }
+
+        @Override
+        public void fly() {
+            System.out.println("La paloma vuela...");
+        }
+    }
+    public static class WrongHuman implements WrongAnimal{
+
+        @Override
+        public void walk() {
+            System.out.println("El humano camina...");
+        }
+
+        @Override
+        public void fly() {} //Los humanos no vuelan
+    }
+    //Forma correcta
+    public interface WalkableAnimal{
+        public void walk();
+    }
+    public interface FlyingAnimal {
+        public void fly();
+    }
+    public static class Pigeon implements WalkableAnimal, FlyingAnimal {
+
+        @Override
+        public void walk() {
+            System.out.println("La paloma camina...");
+        }
+
+        @Override
+        public void fly() {
+            System.out.println("La paloma vuela...");
+        }
+    }
+    public static class Human implements WalkableAnimal{
+
+        @Override
+        public void walk() {
+            System.out.println("El humano camina...");
+        }
+    }
+    //Reto
+    public abstract class Printer{
+        public void print(String text){
+            System.out.println(text);
+        }
+    }
+    public interface BWPrinter{
+        public void printBW(String text);
+    }
+    public interface ColorPrinter{
+        public void printColor(String text);
+    }
+    public interface MultiFunctionPrinter{
+        public String scan();
+        public void fax(String text);
+    }
+    public class OldPrinter extends Printer implements BWPrinter{
+
+        @Override
+        public void printBW(String text) {
+            super.print("\"" + text + "\" en blanco y negro");
+        }
+
+        @Override
+        public void print(String text) {
+            printBW(text);
+        }
+    }
+    public class MediumPrinter extends Printer implements ColorPrinter{
+
+        @Override
+        public void printColor(String text) {
+            super.print("\"" + text + "\" a color");
+        }
+
+        @Override
+        public void print(String text) {
+            printColor(text);
+        }
+    }
+    public class ModernPrinter extends Printer implements ColorPrinter, MultiFunctionPrinter{
+
+        @Override
+        public void printColor(String text) {
+            super.print("\"" + text + "\" a color");
+        }
+
+        @Override
+        public String scan() {
+            return "Texto escaneado";
+        }
+
+        @Override
+        public void fax(String text) {
+            System.out.println("Texto enviado por fax con éxito");
+        }
+
+        @Override
+        public void print(String text) {
+            printColor(text);
+        }
+    }
+}