Introduction

This is the GitHub repository for my blogpost published on aykutbuyukkaya.codes.

You can find the exact post link here.

Password rules are as follows:

• Minimum 10 maximum 128 characters.
• At least one English uppercase letter.
• At least one English lowercase letter.
• At least one digit character.
• At least one special character.
• No whitespaces are allowed.

Using Tools & Technologies

Backend

• Java 17
• Maven (4.0.0)
• Spring Boot (2.7.2 with Spring Data JPA, Spring Web, and Spring Validation)
• Passay (For password constraints)
• H2 Database (Database for test purposes)
• Lombok (To reduce boilerplate code)
• Springdoc Swagger-UI (For API testing)

These are APIs that we need to provide:

Method	Route	Parameter Type	Parameter Info	Description
POST	{{baseUrl}}/authentication/signup	Body	{"email": "string","password": "string"}	User sign up process with password validation.

📦 Package With Maven

On project root file:

$ mvn clean install

📋 Run With Java

$ java -jar target/java-password-validation-example-0.0.1-SNAPSHOT.jar