issue iluwatar#333 javadocs changes

Author: Crossy147

factory-kit/src/main/java/com/iluwatar/factorykit/App.java

@@ -1,7 +1,11 @@
 package com.iluwatar.factorykit;
 
 public class App {
-
+  /**
+   * Program entry point.
+   *
+   * @param args @param args command line args
+   */
   public static void main(String[] args) {
     WeaponFactory factory = WeaponFactory.factory(builder -> {
       builder.add(WeaponType.SWORD, Sword::new);

factory-kit/src/main/java/com/iluwatar/factorykit/Weapon.java

@@ -1,7 +1,7 @@
 package com.iluwatar.factorykit;
 
 /**
- * Interface representing weapon
+ * Interface representing weapon.
  */
 public interface Weapon {
 }

factory-kit/src/main/java/com/iluwatar/factorykit/WeaponFactory.java

@@ -5,14 +5,26 @@
 import java.util.function.Supplier;
 
 /**
- * Functional interface that represents factory kit. Instance created locally gives an opportunity to strictly define
- * which objects types the instance of a factory would be able to create. Factory is just a placeholder for builders with
- * create method to initialize new objects.
+ * Functional interface, an example of the factory-kit design pattern.
+ * <br>Instance created locally gives an opportunity to strictly define
+ * which objects types the instance of a factory will be able to create.
+ * <br>Factory is a placeholder for {@link Builder}s
+ * with {@link WeaponFactory#create(WeaponType)} method to initialize new objects.
  */
 public interface WeaponFactory {
 
+  /**
+   * Creates an instance of the given type.
+   * @param name representing enum of an object type to be created.
+   * @return new instance of a requested class implementing {@link Weapon} interface.
+   */
   Weapon create(WeaponType name);
 
+  /**
+   * Creates factory - placeholder for specified {@link Builder}s.
+   * @param consumer for the new builder to the factory.
+   * @return factory with specified {@link Builder}s
+   */
   static WeaponFactory factory(Consumer<Builder> consumer) {
     HashMap<WeaponType, Supplier<Weapon>> map = new HashMap<>();
     consumer.accept(map::put);

factory-kit/src/main/java/com/iluwatar/factorykit/WeaponType.java

@@ -1,5 +1,8 @@
 package com.iluwatar.factorykit;
 
+/**
+ * Enumerates {@link Weapon} types
+ */
 public enum WeaponType {
   SWORD, AXE, BOW, SPEAR
 }