Java Snippets

A collection of Java code snippets and examples for learning and reference.

Project Structure

src/
├── main/
│   ├── java/
│   │   └── io/
│   │       └── weli/
│   │           ├── ai/          # AI related examples
│   │           ├── alg/         # Algorithm examples
│   │           ├── concurrent/  # Concurrency examples
│   │           ├── generic/     # Generic programming examples
│   │           ├── lang/        # Java language features
│   │           ├── reflection/  # Reflection examples
│   │           ├── rest/        # REST API examples
│   │           └── ...
│   └── resources/
└── test/
    └── java/
        └── io/
            └── weli/
                └── ...

Features

• REST API client examples using RestAssured
• Algorithm implementations and examples
• Concurrency patterns and examples
• Generic programming examples
• Java language features exploration
• Reflection API usage examples
• AI integration examples
• And more...

Getting Started

Prerequisites

• Java 21 or later
• Maven 3.9.6 or later

Building

mvn clean install

Running Examples

REST API Client Demo

To run the REST API client demo:

# Without proxy
mvn clean compile exec:java -Dexec.mainClass="io.weli.rest.RestApiClientDemo"

# With proxy
mvn clean compile exec:java -Dexec.mainClass="io.weli.rest.RestApiClientDemo" -Dproxy.enabled=true -Dproxy.host=localhost -Dproxy.port=7890

The demo will:

1. Fetch all posts
2. Get a specific post
3. Create a new post
4. Update a post
5. Get user information
6. Delete a post

Running Tests

mvn clean test

Proxy Configuration

The project supports proxy configuration for HTTP/HTTPS requests. You can configure the proxy settings in two ways:

1. Using system properties:

   mvn clean compile exec:java -Dexec.mainClass="io.weli.rest.RestApiClientDemo" -Dproxy.enabled=true -Dproxy.host=localhost -Dproxy.port=7890

2. Programmatically in your code:

   System.setProperty("http.proxyHost", "localhost");
   System.setProperty("http.proxyPort", "7890");
   System.setProperty("https.proxyHost", "localhost");
   System.setProperty("https.proxyPort", "7890");

Contributing

Feel free to contribute by:

1. Forking the repository
2. Creating a new branch
3. Making your changes
4. Submitting a pull request

License

This project is licensed under the MIT License - see the LICENSE file for details.