feat: dates update and small fixes

01 Spring Platform/01 Spring Platform.md

@@ -164,7 +164,7 @@ There are three methods for dependency injection:
 ```java
 public class UserService {
 
-    private UserRepository repository;
+    private final UserRepository repository;
 
     public UserService(UserRepository repository) {
         this.repository = repository;
@@ -180,7 +180,7 @@ UserService service = new UserService(repository);
 
 Injection with constructor:
 
-* immutable objects (no setters and final fields) can be created,
+* immutable objects (final fields and no setters) can be created,
 * construction and injection in single step.
 
 ---
@@ -252,7 +252,7 @@ Dependency Injection in Spring Container:
 ```java
 public class UserService {
 
-    private UserRepository repository;
+    private final UserRepository repository;
 
     @Autowired
     public UserService(UserRepository repository) {
@@ -319,11 +319,10 @@ Initialization:
 Command line applications in Spring Boot can be achieved with components implementing `CommandLineRunner` interface:
 
 ```java
-
 @Component
 public class ApplicationCommand implements CommandLineRunner {
 
-    private UserService service;
+    private final UserService service;
 
     @Autowired
     public CommandLine(UserService service) {

02 Spring Data JPA/02 Spring Data JPA.md

@@ -18,7 +18,7 @@ Michał Wójcik
 
 * Spring Data Commons - core concepts for every Spring Data module
 * Spring Data JDBC - SQL database access using JDBC,
-* Spring Data JDBC Ext - support for databases specific ex tensions,
+* Spring Data JDBC Ext - support for databases specific extensions,
 * Spring Data JPA - SQL database access using JPA,
 * Spring Data KeyValue - support for key-value stores (non-relational databases, map-reduce frameworks),
 * Spring Data LDAP - support for LDAP catalog,
@@ -95,7 +95,7 @@ JPA is only a standard, there is a number of implementations:
   * `unique` – if column values are unique,
   * `updatable` – if column value can up updated after row creation;
 * `@Temporal` – required for `Date` i `Calendar` types:
-  * allows to user database date/time types to be used to store values (if database supports them);
+  * allows to use database date/time types to be used to store values (if database supports them);
 * `@Transient` – fields which will be skipped during object-relational mapping.
 
 ---
@@ -207,7 +207,7 @@ public class Character {
 ### Connection configuration
 
 There are several methods for defining connection to the database in Spring.
-One of the easiest is to user `application.properties` configuration file stored in project sources.
+One of the easiest is to use `application.properties` configuration file stored in project sources.
 
 Data source settings: