Encryption and Decryption in Java

Imagine you’re sharing private information, like your credit card details or medical history.

Source: medium.com/@sharadblog

Implement JWT authentication in a Spring Boot 3 application

Prerequisites

• JDK 11 or higher 
• Maven 3.8 or higher 
• MySQL running on Docker 
• An HTTP client such as Postman, Insomnia, cURL, etc.

Source: medium.com/@tericcabrel/

Generate PDF Using Apache FOP

Generate PDF Using Apache FOP

Source: malshani-wijekoon.medium.com

Code source: https://github.com/malshaniwijekoon/FOP

ChatGPT Integration with Spring Boot Application

OpenAI ChatGPT APIs

API (POST https://api.openai.com/v1/chat/completions) to generate responses to a prompt. 

What we need to send to invoke the OpenAI API?

• Upon accessing the “Create Chat Completion” API link, the following information regarding endpoint, request, and response is visible.
• Endpoint: POST https://api.openai.com/v1/chat/completions
• Go to Playgroud and type any message e.g. “What is spring boot?”

https://platform.openai.com/api-keys

Source: levelup.gitconnected.com

SpringBoot - Versioning RESTful APIs

API versioning with SpringBoot

Source: jackynote.medium.com

Create API request in parallel using Spring Webflux + Rest Template + Completablefuture

• Spring Webflux
• Spring Completablefuture function
• Rest Template

Link
Github: https://github.com/ashraphs/research-springboot/tree/dev/parallel-    api-calling

Source: medium.com/@amirasyraf32 

CompletableFuture and ExecutorService

CompletableFuture and ExecutorService 

ExecutorService

public static void main(String[] args) throws ExecutionException, InterruptedException {
        ExecutorService executor = Executors.newFixedThreadPool(3);
        Future futureResult = executor.submit(new Add(10, 20)); // 1
        Integer intermediateResult = futureResult.get(); // 2
        Future finalResult = executor.submit(new Multiply(intermediateResult)); // 3
        System.out.println(finalResult.get());
        executor.shutdown();
    }

CompletableFuture

 

public static void main(String[] args) throws ExecutionException, InterruptedException {
    Integer finalResult = CompletableFuture.supplyAsync(() -> add(10, 20))
            .thenApplyAsync(result -> multiply(result))
            .get();
    System.out.println(finalResult);
}
public static Integer add(int a, int b) {
    return a + b;

}
public static Integer multiply(int result) {
    return result * 15;
}

Source: medium.com/@anil.java.story