Patron Command

src/main/java/org/example/designpatterns/command/App.java

+package org.example.designpatterns.command;
+
+import org.example.designpatterns.command.commands.Cuenta;
+import org.example.designpatterns.command.commands.DepositarImpl;
+import org.example.designpatterns.command.commands.Invoker;
+import org.example.designpatterns.command.commands.RetirarImpl;
+
+public class App {
+    public static void main(String[] args) {
+        Cuenta cuenta = new Cuenta(1, 200);
+
+        DepositarImpl depositar = new DepositarImpl(cuenta, 100);
+        RetirarImpl retirar = new RetirarImpl(cuenta, 50);
+
+        Invoker ivk = new Invoker();
+        ivk.recibirOperacion(depositar);
+        ivk.recibirOperacion(retirar);
+
+        ivk.realizarOperaciones();
+    }
+}

src/main/java/org/example/designpatterns/command/commands/Cuenta.java

+package org.example.designpatterns.command.commands;
+
+public class Cuenta {
+
+    private int id;
+    private double saldo;
+
+    public Cuenta(int id, double saldo) {
+        this.id = id;
+        this.saldo = saldo;
+    }
+
+    public void retirar(double monto) {
+        this.saldo = this.saldo - monto;
+        System.out.println("[COMANDO RETIRAR] Cuenta: " + id + " Saldo: " + this.saldo);
+    }
+
+    public void depositar(double monto) {
+        this.saldo = this.saldo + monto;
+        System.out.println("[COMANDO DEPOSITAR] Cuenta: " + id + " Saldo: " + this.saldo);
+    }
+}

src/main/java/org/example/designpatterns/command/commands/DepositarImpl.java

+package org.example.designpatterns.command.commands;
+
+public class DepositarImpl implements IOperation{
+
+    private Cuenta cuenta;
+    private double monto;
+
+    public DepositarImpl(Cuenta cuenta, double monto) {
+        this.cuenta = cuenta;
+        this.monto = monto;
+    }
+
+    @Override
+    public void execute() {
+        this.cuenta.depositar(this.monto);
+    }
+}

src/main/java/org/example/designpatterns/command/commands/IOperation.java

+package org.example.designpatterns.command.commands;
+
+@FunctionalInterface
+public interface IOperation {
+    void execute();
+}

src/main/java/org/example/designpatterns/command/commands/Invoker.java

+package org.example.designpatterns.command.commands;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Invoker {
+
+    private List<IOperation> operations = new ArrayList<>();
+
+    public void recibirOperacion(IOperation operation) {
+        this.operations.add(operation);
+    }
+
+    public void realizarOperaciones() {
+        this.operations.forEach(IOperation::execute);
+        this.operations.clear();
+    }
+}

src/main/java/org/example/designpatterns/command/commands/RetirarImpl.java

+package org.example.designpatterns.command.commands;
+
+public class RetirarImpl implements IOperation{
+
+    private Cuenta cuenta;
+    private double monto;
+
+    public RetirarImpl(Cuenta cuenta, double monto) {
+        this.cuenta = cuenta;
+        this.monto = monto;
+    }
+
+    @Override
+    public void execute() {
+        this.cuenta.retirar(this.monto);
+    }
+}