Add classes of complex car subsystem

patterns/facade/src/main/java/com/baeldung/pattern/facade/carsystem/AirFlowController.java

@@ -0,0 +1,19 @@
+package com.baeldung.pattern.facade.carsystem;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class AirFlowController {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(AirFlowController.class);
+    private AirFlowMeter airFlowMeter = new AirFlowMeter();
+
+    public void takeAir() {
+        airFlowMeter.getMeasurements();
+        LOGGER.info("Air provided!");
+    }
+
+    public void off() {
+        LOGGER.info("Air controller switched off.");
+    }
+}

patterns/facade/src/main/java/com/baeldung/pattern/facade/carsystem/AirFlowMeter.java

@@ -0,0 +1,13 @@
+package com.baeldung.pattern.facade.carsystem;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class AirFlowMeter {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(AirFlowMeter.class);
+
+    public void getMeasurements() {
+        LOGGER.info("Getting air measurements...");
+    }
+}

patterns/facade/src/main/java/com/baeldung/pattern/facade/carsystem/CatalyticConverter.java

@@ -0,0 +1,17 @@
+package com.baeldung.pattern.facade.carsystem;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class CatalyticConverter {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(CatalyticConverter.class);
+
+    public void on() {
+        LOGGER.info("Catalytic Converter switched on!");
+    }
+
+    public void off() {
+        LOGGER.info("Catalytic Converter switched off!");
+    }
+}

patterns/facade/src/main/java/com/baeldung/pattern/facade/carsystem/CoolingController.java

@@ -0,0 +1,34 @@
+package com.baeldung.pattern.facade.carsystem;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class CoolingController {
+    private static final Logger LOGGER = LoggerFactory.getLogger(CoolingController.class);
+    private static final Integer DEFAULT_RADIATOR_SPEED = 10;
+
+    private Integer temperatureUpperLimit;
+    private Radiator radiator = new Radiator();
+    private TemperatureSensor temperatureSensor = new TemperatureSensor();
+
+    public void setTemperatureUpperLimit(Integer temperatureUpperLimit) {
+        LOGGER.info("Setting temperature upper limit to {}", temperatureUpperLimit);
+        this.temperatureUpperLimit = temperatureUpperLimit;
+    }
+
+    public void run() {
+        LOGGER.info("Cooling Controller ready!");
+        radiator.setSpeed(DEFAULT_RADIATOR_SPEED);
+    }
+
+    public void cool(Integer maxAllowedTemp) {
+        LOGGER.info("Scheduled cooling with maximum allowed temperature {}", maxAllowedTemp);
+        temperatureSensor.getTemperature();
+        radiator.on();
+    }
+
+    public void stop() {
+        LOGGER.info("Stopping Cooling Controller...");
+        radiator.off();
+    }
+}

patterns/facade/src/main/java/com/baeldung/pattern/facade/carsystem/FuelInjector.java

@@ -0,0 +1,23 @@
+package com.baeldung.pattern.facade.carsystem;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class FuelInjector {
+    private static final Logger LOGGER = LoggerFactory.getLogger(FuelInjector.class);
+
+    private FuelPump fuelPump = new FuelPump();
+
+    public void on(){
+        LOGGER.info("Fuel injector ready to inject fuel.");
+    }
+
+    public void inject() {
+        fuelPump.pump();
+        LOGGER.info("Fuel injected.");
+    }
+
+    public void off() {
+        LOGGER.info("Stopping Fuel injector...");
+    }
+}

patterns/facade/src/main/java/com/baeldung/pattern/facade/carsystem/FuelPump.java

@@ -0,0 +1,13 @@
+package com.baeldung.pattern.facade.carsystem;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class FuelPump {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(FuelPump.class);
+
+    public void pump() {
+        LOGGER.info("Fuel Pump is pumping fuel...");
+    }
+}

patterns/facade/src/main/java/com/baeldung/pattern/facade/carsystem/Radiator.java

@@ -0,0 +1,21 @@
+package com.baeldung.pattern.facade.carsystem;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class Radiator {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(Radiator.class);
+
+    public void on(){
+        LOGGER.info("Radiator switched on!");
+    }
+
+    public void off(){
+        LOGGER.info("Radiator switched off!");
+    }
+
+    public void setSpeed(Integer speed){
+        LOGGER.info("Setting radiator speed to {}",speed);
+    }
+}

patterns/facade/src/main/java/com/baeldung/pattern/facade/carsystem/Starter.java

@@ -0,0 +1,13 @@
+package com.baeldung.pattern.facade.carsystem;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class Starter {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(Starter.class);
+
+    public void start() {
+        LOGGER.info("Starting...");
+    }
+}

patterns/facade/src/main/java/com/baeldung/pattern/facade/carsystem/TemperatureSensor.java

@@ -0,0 +1,13 @@
+package com.baeldung.pattern.facade.carsystem;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class TemperatureSensor {
+    private static final Logger LOGGER = LoggerFactory.getLogger(TemperatureSensor.class);
+
+    public void getTemperature(){
+        LOGGER.info("Getting temperature from the sensor...");
+    }
+
+}