Java 11 migrate 7 remaining f (#1115)

* Moves facade to Java 11

* Moves factory-kit to Java 11

* Moves factory-method to Java 11

* Moves feature-toggle to Java 11

* Moves fluentinterface to Java 11

* Moves flux to Java 11

* Moves flyweight to Java 11

* Moves front-controller to Java 11

* Uses stream properly

* Resolves issues with ci

facade/README.md

@@ -76,9 +76,7 @@ public abstract class DwarvenMineWorker {
   }
 
   public void action(Action... actions) {
-    for (Action action : actions) {
-      action(action);
-    }
+    Arrays.stream(actions).forEach(this::action);
   }
 
   public abstract void work();
@@ -165,9 +163,7 @@ public class DwarvenGoldmineFacade {
 
   private static void makeActions(Collection<DwarvenMineWorker> workers,
       DwarvenMineWorker.Action... actions) {
-    for (DwarvenMineWorker worker : workers) {
-      worker.action(actions);
-    }
+    workers.forEach(worker -> worker.action(actions));
   }
 }
 ```

facade/src/main/java/com/iluwatar/facade/App.java

@@ -42,7 +42,7 @@ public class App {
    * @param args command line args
    */
   public static void main(String[] args) {
-    DwarvenGoldmineFacade facade = new DwarvenGoldmineFacade();
+    var facade = new DwarvenGoldmineFacade();
     facade.startNewDay();
     facade.digOutGold();
     facade.endDay();

facade/src/main/java/com/iluwatar/facade/DwarvenGoldmineFacade.java

@@ -63,8 +63,6 @@ public class DwarvenGoldmineFacade {
       Collection<DwarvenMineWorker> workers,
       DwarvenMineWorker.Action... actions
   ) {
-    for (DwarvenMineWorker worker : workers) {
-      worker.action(actions);
-    }
+    workers.forEach(worker -> worker.action(actions));
   }
 }

facade/src/main/java/com/iluwatar/facade/DwarvenMineWorker.java

@@ -23,6 +23,7 @@
 
 package com.iluwatar.facade;
 
+import java.util.Arrays;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -76,9 +77,7 @@ public abstract class DwarvenMineWorker {
    * Perform actions.
    */
   public void action(Action... actions) {
-    for (Action action : actions) {
-      action(action);
-    }
+    Arrays.stream(actions).forEach(this::action);
   }
 
   public abstract void work();

facade/src/test/java/com/iluwatar/facade/AppTest.java

@@ -26,15 +26,12 @@ package com.iluwatar.facade;
 import org.junit.jupiter.api.Test;
 
 /**
- * 
  * Application test
- *
  */
 public class AppTest {
 
   @Test
   public void test() {
-    String[] args = {};
-    App.main(args);
+    App.main(new String[]{});
   }
 }

facade/src/test/java/com/iluwatar/facade/DwarvenGoldmineFacadeTest.java

@@ -23,20 +23,19 @@
 
 package com.iluwatar.facade;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
 import ch.qos.logback.classic.Logger;
 import ch.qos.logback.classic.spi.ILoggingEvent;
 import ch.qos.logback.core.AppenderBase;
+import java.util.LinkedList;
+import java.util.List;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.slf4j.LoggerFactory;
 
-import java.util.LinkedList;
-import java.util.List;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertTrue;
-
 /**
  * Date: 12/9/15 - 9:40 PM
  *
@@ -56,16 +55,16 @@ public class DwarvenGoldmineFacadeTest {
     appender.stop();
   }
 
-   /**
+  /**
    * Test a complete day cycle in the gold mine by executing all three different steps: {@link
    * DwarvenGoldmineFacade#startNewDay()}, {@link DwarvenGoldmineFacade#digOutGold()} and {@link
    * DwarvenGoldmineFacade#endDay()}.
-   *
+   * <p>
    * See if the workers are doing what's expected from them on each step.
    */
   @Test
   public void testFullWorkDay() {
-    final DwarvenGoldmineFacade goldMine = new DwarvenGoldmineFacade();
+    final var goldMine = new DwarvenGoldmineFacade();
     goldMine.startNewDay();
 
     // On the start of a day, all workers should wake up ...
@@ -128,7 +127,9 @@ public class DwarvenGoldmineFacadeTest {
     }
 
     public boolean logContains(String message) {
-      return log.stream().anyMatch(event -> event.getFormattedMessage().equals(message));
+      return log.stream()
+          .map(ILoggingEvent::getFormattedMessage)
+          .anyMatch(message::equals);
     }
   }