Update README.md

Author: hantsy

README.md

@@ -4,48 +4,50 @@
 
 ## What is this?
 
-This is a sample project demos how to use JWT token based authentication to protect the RESTful APIs in a Spring WebMVC application.
+This is a sample project that demonstrates how to use JWT token-based authentication to protect RESTful APIs in a Spring Web MVC application.
 
-> If you are interested in the new variant built with the Spring WebFlux stack, check [spring-reactive-jwt-sample](https://github.com/hantsy/spring-reactive-jwt-sample/) for more details.
+>
+> [!note]
+>If you are interested in the new variant built with the Spring WebFlux stack, check [spring-reactive-jwt-sample](https://github.com/hantsy/spring-reactive-jwt-sample/) for more details.
 
 ## Guide
 
-Check the [step-by-step GUIDE](./GUIDE.md) to get the detailed explanation of the example codes.  
+Please refer to the [step-by-step guide](./GUIDE.md) for a detailed explanation of the example codes.  
 
-> The original codes were written in Spring Boot 2.0, there are some slightly difference in the main/master branch due to the changes brought in the latest Spring Boot 3.0.
+> The original code was written in Spring Boot 2.0.  There are some slight differences in the main/master branch due to the changes introduced in the latest Spring Boot 3.x.
 
 ## Prerequisites
 
-Make sure you have installed the following software.
+Please ensure that you have installed the following software.
 
-* Java 17
-* Apache Maven 3.6.x
+* Java 21
+* Apache Maven 3.9.x/4.0.0+
 * Docker
 
-## Build 
+## Build
 
-Clone the source codes from Github.
+Clone the source code from GitHub.
 
 ```bash
 git clone https://github.com/hantsy/spring-webmvc-jwt-sample
 ```
 
-Open a terminal, and switch to the root folder of the project, and run the following command to build the whole project.
+Open a terminal, switch to the project's root folder, and run the following command to build the entire project.
 
 ```bash
-docker-compose up postgres // start up a postgres
+docker compose up postgres // start up a postgres
 mvn clean install // build the project
 ```
 
-Run the application.
+Please proceed with executing the following command to run the application.
 
 ```bash
-mvn spring-boot:run
-// or from command line after building
+mvn spring-boot: run
+// or from the command line after building
 java -jar target/xxx.jar
 ```
 
-
 ## Contribution
 
-Any suggestions are welcome, filing an issue or submitting a PR is also highly recommended.  
+Any suggestions are welcome, filing an issue or submitting a PR is also highly recommended.
+