Click the blue text to follow! Dear programmer friends, it’s time to meet with Feng again! Have you ever encountered a situation where you clicked “sleep mode” on your smart home app, and the curtains closed, but the lights remained on, and the air conditioning turned off? It’s like planning a candlelight dinner, and the … Read more
Core Idea of SPI Mechanism SPI (Service Provider Interface) is a service discovery mechanism that allows frameworks or libraries to dynamically load implementation classes of interfaces at runtime, achieving module decoupling and pluggable extensions. The core process is as follows: Define the interface (Service Provider Interface). Write multiple implementation classes for the interface. Register the … Read more
1. Importing the HttpClient Dependency First, confirm whether the HttpClient dependency has been included in the project. If it has not been included, add the following code to the pom.xml to import the HttpClient dependency: <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.5.13</version> </dependency> 2. Sending GET Requests 2.1 Sending GET Requests (No Parameters) import org.apache.http.HttpStatus; import org.apache.http.client.methods.CloseableHttpResponse; import … Read more
In modern software development, network communication is an indispensable part, especially when building distributed systems, microservices architectures, and various client-server applications. Apache HttpClient, as a powerful and mature Java library, excels in handling HTTP requests and responses, and is widely used in numerous practical projects. Apache HttpClient supports various HTTP request methods, including GET, POST, … Read more
In 2025, the job market for computer science graduates will welcome new opportunities. These fields not only have broad technical prospects but also strong market demand, providing diverse career choices for developers with different tech stacks. Here are several key directions worth noting: 1. Java: Enterprise Development and Cloud-Native Ecosystem Java, as the mainstream language … Read more
Follow “Java Matters” and select “Star” to receive a free Java book package, whether you are a newcomer or an experienced developer in this new era.Source: Online. When your server’s CPU reaches 100%, how do you troubleshoot the abnormal fault? At the end of this article, a shell script will be shared to help you … Read more
Understanding Java Security: Implementing Data Encryption Protection with Symmetric and Asymmetric Encryption Algorithms In the digital world, our data is as precious as our own treasures. Imagine you have a diary filled with secrets that you certainly wouldn’t want others to casually peek at. In the realm of computing, data is no different; we need … Read more
Java Encryption Algorithms: Principles of Symmetric Encryption, Asymmetric Encryption, and Hash Functions In modern information technology, data security is a crucial topic. To protect sensitive information, we often need to use various encryption algorithms. This article will detail the three main encryption algorithms in Java: Symmetric Encryption, Asymmetric Encryption, and Hash Functions, along with corresponding … Read more
Click the blue text to follow! javalorawan Practical Java Wastewater Monitoring: Optimizing Data Transmission with LoRaWAN Protocol Hello, everyone! It’s Feng again. Today, let’s talk about a topic with some “flavor”—using Java for wastewater monitoring. That’s right, the stuff you never care about when you flush the toilet now needs to be monitored with code! … Read more
Hello everyone! When I first started learning Java programming, I was particularly curious about how to track user states and manage sessions in web applications. Later, I discovered that Java’s Cookie library acts like a helpful little steward, assisting us in managing HTTP cookies for user state tracking and session management. Today, I will provide … Read more