docs: update special case

special-case/src/main/java/com/iluwatar/specialcase/Db.java

@@ -26,6 +26,8 @@ package com.iluwatar.specialcase;
 
 import java.util.HashMap;
 import java.util.Map;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
 
 /**
  * DB class for seeding user info.
@@ -119,17 +121,11 @@ public class Db {
   /**
    * User class to store user info.
    */
+  @RequiredArgsConstructor
+  @Getter
   public class User {
 
-    private String userName;
-
-    public User(String userName) {
-      this.userName = userName;
-    }
-
-    public String getUserName() {
-      return userName;
-    }
+    private final String userName;
 
     public ReceiptDto purchase(Product item) {
       return new ReceiptDto(item.getPrice());
@@ -139,13 +135,11 @@ public class Db {
   /**
    * Account info.
    */
-  public class Account {
+  @RequiredArgsConstructor
+  @Getter
+  public static class Account {
 
-    private Double amount;
-
-    public Account(Double amount) {
-      this.amount = amount;
-    }
+    private final Double amount;
 
     /**
      * Withdraw the price of the item from the account.
@@ -159,25 +153,15 @@ public class Db {
       }
       return new MoneyTransaction(amount, price);
     }
-
-    public Double getAmount() {
-      return amount;
-    }
   }
 
   /**
    * Product info.
    */
-  public class Product {
+  @RequiredArgsConstructor
+  @Getter
+  public static class Product {
 
-    private Double price;
-
-    public Product(Double price) {
-      this.price = price;
-    }
-
-    public Double getPrice() {
-      return price;
-    }
+    private final Double price;
   }
 }

special-case/src/main/java/com/iluwatar/specialcase/MaintenanceLock.java

@@ -24,6 +24,7 @@
  */
 package com.iluwatar.specialcase;
 
+import lombok.Getter;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -35,6 +36,8 @@ public class MaintenanceLock {
   private static final Logger LOGGER = LoggerFactory.getLogger(MaintenanceLock.class);
 
   private static MaintenanceLock instance;
+
+  @Getter
   private boolean lock = true;
 
   /**
@@ -49,10 +52,6 @@ public class MaintenanceLock {
     return instance;
   }
 
-  public boolean isLock() {
-    return lock;
-  }
-
   public void setLock(boolean lock) {
     this.lock = lock;
     LOGGER.info("Maintenance lock is set to: {}", lock);

special-case/src/main/java/com/iluwatar/specialcase/MoneyTransaction.java

@@ -24,16 +24,14 @@
  */
 package com.iluwatar.specialcase;
 
+import lombok.RequiredArgsConstructor;
+
 /**
  * Represents the money transaction taking place at a given moment.
  */
+@RequiredArgsConstructor
 public class MoneyTransaction {
 
-  private Double amount;
-  private Double price;
-
-  public MoneyTransaction(Double amount, Double price) {
-    this.amount = amount;
-    this.price = price;
-  }
+  private final Double amount;
+  private final Double price;
 }

special-case/src/main/java/com/iluwatar/specialcase/ReceiptDto.java

@@ -24,26 +24,22 @@
  */
 package com.iluwatar.specialcase;
 
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
  * Receipt view representing the transaction recceipt.
  */
+@RequiredArgsConstructor
+@Getter
 public class ReceiptDto implements ReceiptViewModel {
 
   private static final Logger LOGGER = LoggerFactory.getLogger(ReceiptDto.class);
 
   private final Double price;
 
-  public ReceiptDto(Double price) {
-    this.price = price;
-  }
-
-  public Double getPrice() {
-    return price;
-  }
-
   @Override
   public void show() {
     LOGGER.info(String.format("Receipt: %s paid", price));