Java

In-Depth Analysis of Apache HttpClient: A Powerful Tool for Java Network Programming

by
In-Depth Analysis of Apache HttpClient: A Powerful Tool for Java Network Programming

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

New Opportunities in the Job Market for Computer Science Graduates in 2025 (Java, C/C++, AI, Python, Embedded, Frontend…)

by
New Opportunities in the Job Market for Computer Science Graduates in 2025 (Java, C/C++, AI, Python, Embedded, Frontend...)

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

Summary of Troubleshooting 100% CPU Usage on Linux

by
Summary of Troubleshooting 100% CPU Usage on Linux

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

by
Understanding Java Security: Implementing Data Encryption Protection with Symmetric and Asymmetric Encryption Algorithms

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

by
Java Encryption Algorithms: Principles of Symmetric Encryption, Asymmetric Encryption, and Hash Functions

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

Practical Java Wastewater Monitoring: Optimizing Data Transmission with LoRaWAN Protocol

by
Practical Java Wastewater Monitoring: Optimizing Data Transmission with LoRaWAN Protocol

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

Managing HTTP Cookies with Java’s Cookie Library: User State Tracking and Session Management

by
Managing HTTP Cookies with Java's Cookie Library: User State Tracking and Session Management

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

Super Simple: Implementing an NIO HTTP Client in Java with 100 Lines of Code and No Third-Party Dependencies

by
Super Simple: Implementing an NIO HTTP Client in Java with 100 Lines of Code and No Third-Party Dependencies

This article was published on Ruzhila (WeChat Official Account: ruzhila). Everyone can visit Ruzhila to learn more about practical programming. 🎉 Implement an NIO HTTP client in Java with just 100 lines of code. The code is simple and clear, helping you understand the working principle of NIO and the completely asynchronous HTTP protocol parsing … Read more

Linux Application Auto-Start Fails? A Comprehensive Guide to Avoiding Pitfalls with Systemd in 5 Steps!

by
Linux Application Auto-Start Fails? A Comprehensive Guide to Avoiding Pitfalls with Systemd in 5 Steps!

IntroductionAs a developer, have you ever encountered a situation where you configured your application to automatically restart after a crash, but the service just won’t come back up? The logs only show a cold <span>status=217/USER</span>, leaving you puzzled? Don’t panic! Today, we will provide a hands-on guide to help you solve the “mystical” issue of … Read more

Java Vectorization Programming: Accelerating Image Processing Algorithms with SIMD Instructions

by
Java Vectorization Programming: Accelerating Image Processing Algorithms with SIMD Instructions

Click the blue text to follow! Java Vectorization Programming: Accelerating Image Processing Algorithms with SIMD Instructions Hello, programmers! Feng is back! Today, let’s talk about something exciting—Java vectorization programming. Don’t be intimidated by this fancy name; it’s simply a black technology that makes your Java code fly! Especially when processing images, the acceleration effect is … Read more