Spring Boot CORS Handling, Commons Lang3 Utility Guide, and Custom Startup Banner Configuration
Per-Controller CORS Setup
Apply the @CrossOrigin annotation directly to a controller method or entire controller to enable cross-origin requests for specific endpoints:
@RestController
@RequestMapping("/system")
public class SystemInfoController {
@CrossOrigin
@GetMapping("/current-time")
public ServiceResponse ...
Posted on Mon, 29 Jun 2026 16:55:43 +0000 by Chrysanthus
Concurrent Utility Classes in Java: Principles and Practical Applications
Java's concurrent utility classes (JUC) provide ready-to-use concurrency control capabilities, avoiding the need to reinvent the wheel. The CountDownLatch, CyclicBarrier, Semaphore, and Exchanger are the most essential four. This article will explain each tool from core purpose, underlying mechanism, use cases, and code examples to help you und ...
Posted on Fri, 05 Jun 2026 17:28:35 +0000 by ploiesti