ReqRes User Client This is a simple Java application that demonstrates how to consume a RESTful API using Java's built-in HTTP client and Google's Gson library. It fetches and displays paginated user data from the ReqRes API (https://reqres.in/), a free API for testing and prototyping.
- This README.md file is created by AI.
- Code is built for learning and demonstration purposes. Dependencies
- Java 11+
- Gson for JSON parsing Project Structure (basic)
src/ ├── main/ │ ├── java/ │ │ └── com/example/reqresclient/ │ │ ├── UserDTO.java │ │ └── UserClient.java │ └── resources/ │ └── config.properties
Features
- Connects to a REST API endpoint to fetch users page-by-page.
- Deserializes JSON responses into Java objects using Gson.
- Supports debug mode to print detailed user info.
- Handles errors gracefully and provides descriptive error messages. How to Run Build and Run
Using Maven: Open your terminal or command prompt and navigate to the reqres-client directory, which contains your pom.xml file. mvn clean compile mvn package cd target java -jar reqres-client-1.0-SNAPSHOT.jar
Without Using Maven: To build your Java code without Maven, you'll need to manually handle compilation, dependency management, and JAR creation using command-line tools like javac and jar that come with your Java Development Kit (JDK). Windows (Command Prompt/Powershell): javac -d target\classes -cp lib\gson-2.10.1.jar src\main\java\com\example\reqresclient*.java
copy src\main\resources\config.properties target\classes\config.properties
jar -c -v -f reqres-client.jar -m MANIFEST.MF -C target/classes .
java -jar reqres-client.jar
Linux (Bash): javac -d target/classes -cp lib/gson-2.10.1.jar src/main/java/com/example/reqresclient/*.java
cp src/main/resources/config.properties target/classes/config.properties
jar -cvfm reqres-client.jar MANIFEST.MF -C target/classes . • java -jar reqres-client.jar
📘 Example Output
Using API Base URL from config: https://reqres.in/api/users Debugging Enabled: true
--- Fetching All Users Across Pages ---
--- Users on Page 1 --- Name: George Bluth Debug Info: UserDTO{id=1, email='george.bluth@reqres.in', firstName='George', lastName='Bluth'} ...