📍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>

specification/src/main/java/com/iluwatar/specification/app/App.java

@@ -40,8 +40,7 @@ import com.iluwatar.specification.selector.MovementSelector;
 import java.util.List;
 import java.util.Objects;
 import java.util.function.Predicate;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import lombok.extern.slf4j.Slf4j;
 
 /**
  * <p>The central idea of the Specification pattern is to separate the statement of how to match a
@@ -54,10 +53,9 @@ import org.slf4j.LoggerFactory;
  *
  * <p>http://martinfowler.com/apsupp/spec.pdf</p>
  */
+@Slf4j
 public class App {
 
-  private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
-
   /**
    * Program entry point.
    */

specification/src/main/java/com/iluwatar/specification/property/Mass.java

@@ -23,9 +23,12 @@
 
 package com.iluwatar.specification.property;
 
+import lombok.EqualsAndHashCode;
+
 /**
  * Mass property.
  */
+@EqualsAndHashCode
 public class Mass {
 
   private final double value;
@@ -57,11 +60,4 @@ public class Mass {
     return title;
   }
 
-  @Override
-  public final boolean equals(Object obj) {
-    if (!(obj instanceof Mass)) {
-      return false;
-    }
-    return ((Mass) obj).value == this.value;
-  }
 }