Java Web Development (JSP/Servlets) Services

Time flies! I remember the time when Java 8 was such a reference, and everybody was talking about it like something new and revolutionary. Frankly speaking, it was new and revolutionary. But now, projects using Java 8 might be labeled "legacy." If Java 8 itself became a legacy, the features introduced in that version would still be actual. And let’s talk today about one of them — Stream API. 

In case you don’t know, Java Stream API is a powerful tool that allows programmers to write Java code in a functional programming style. Introduced long ago, it makes working with collections easier by enabling filtering, transformation, and aggregation. 

OAuth 2.0 is a widely used authorization framework that allows third-party applications to access user resources on a resource server without sharing the user's credentials. 

The Password Grant type, also known as Resource Owner Password Credentials Grant, is a specific authorization grant defined in the OAuth 2.0 specification. It's particularly useful in scenarios where the client application is highly trusted and has a direct relationship with the user (e.g., a native mobile app or a first-party web application). This grant type allows the client to request an access token by directly providing the user's username and password to the authorization server. While convenient, it's crucial to implement this grant type securely, as it involves handling sensitive user credentials. 

Asking our Java file-processing applications to manipulate PDF documents can only increase their value in the long run. PDF is by far the most popular, widely used file type in the world today, and that’s unlikely to change any time soon.

Introduction

In this article, we’ll specifically learn how to divide PDF files into a series of separate PDF documents in Java — resulting in exactly one new PDF per page of the original file — and we’ll discuss open-source and third-party web API options to facilitate implementing that programmatic workflow into our code. We’ll start with a high-level overview of how PDF files are structured to make this type of workflow possible.

As the world becomes increasingly conscious of energy consumption and its environmental impact, software development is joining the movement to go green. Surprisingly, even the choice of runtime environments and how code is executed can affect energy consumption. This brings us to the world of Java Virtual Machines (JVMs), an integral part of running Java applications, and the rising star in the JVM world, GraalVM. 

In this article, we will explore how code performance and energy efficiency intersect in the JVM ecosystem and why GraalVM stands out in this domain.

Hi, community!

This is my first article in a series of introductions to Spring AI. Today, we will see how we can easily generate pictures using text prompts. To achieve this, we will leverage the OpenAI API and the DALL-E 3 model.