📍Use lombok, reformat, and optimize the code (#1560)

* Use lombok, reformat, and optimize the code

* Fix merge conflicts and some sonar issues

Co-authored-by: va1m <va1m@email.com>

zh/facade/README.md

@@ -31,10 +31,9 @@ tags:
 使用上面金矿的例子。这里我们有矮人的矿工等级制度。
 
 ```java
+@Slf4j
 public abstract class DwarvenMineWorker {
 
-  private static final Logger LOGGER = LoggerFactory.getLogger(DwarvenMineWorker.class);
-
   public void goToSleep() {
     LOGGER.info("{} goes to sleep.", name());
   }
@@ -87,10 +86,9 @@ public abstract class DwarvenMineWorker {
   }
 }
 
+@Slf4j
 public class DwarvenTunnelDigger extends DwarvenMineWorker {
 
-  private static final Logger LOGGER = LoggerFactory.getLogger(DwarvenTunnelDigger.class);
-
   @Override
   public void work() {
     LOGGER.info("{} creates another promising tunnel.", name());
@@ -102,10 +100,9 @@ public class DwarvenTunnelDigger extends DwarvenMineWorker {
   }
 }
 
+@Slf4j
 public class DwarvenGoldDigger extends DwarvenMineWorker {
 
-  private static final Logger LOGGER = LoggerFactory.getLogger(DwarvenGoldDigger.class);
-
   @Override
   public void work() {
     LOGGER.info("{} digs for gold.", name());
@@ -117,10 +114,9 @@ public class DwarvenGoldDigger extends DwarvenMineWorker {
   }
 }
 
+@Slf4j
 public class DwarvenCartOperator extends DwarvenMineWorker {
 
-  private static final Logger LOGGER = LoggerFactory.getLogger(DwarvenCartOperator.class);
-
   @Override
   public void work() {
     LOGGER.info("{} moves gold chunks out of the mine.", name());