Refactor some code in Java8 and transform properties file to yaml file.

pom.xml

@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.0.0.RELEASE</version>
+		<version>2.1.6.RELEASE</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
@@ -25,35 +25,40 @@
 	</properties>
 
 	<dependencies>
+		<!-- ************* -->
+		<!--  Spring boot  -->
+		<!-- ************* -->
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-data-jpa</artifactId>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-web</artifactId>
+			<artifactId>spring-boot-starter-security</artifactId>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-security</artifactId>
+			<artifactId>spring-boot-starter-web</artifactId>
 		</dependency>
-
+		<!-- Runtime -->
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-devtools</artifactId>
 			<scope>runtime</scope>
 		</dependency>
+		<!-- Test -->
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>
 			<scope>test</scope>
 		</dependency>
-		<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations -->
-		<dependency>
-		    <groupId>com.fasterxml.jackson.core</groupId>
-		    <artifactId>jackson-annotations</artifactId>
-		</dependency>
-		<!-- https://mvnrepository.com/artifact/org.mindrot/jbcrypt -->
+
+
+
+<!--		<dependency>-->
+<!--		    <groupId>com.fasterxml.jackson.core</groupId>-->
+<!--		    <artifactId>jackson-annotations</artifactId>-->
+<!--		</dependency>-->
 		<dependency>
 		    <groupId>org.mindrot</groupId>
 		    <artifactId>jbcrypt</artifactId>