Spring Boot Hello World War File Download Apr 2026

@GetMapping("/") public String hello() return "Hello World from Spring Boot WAR!";

Generate your WAR-ready project at start.spring.io (remember to select WAR packaging), add the five lines of controller code above, and run mvnw package . Your Hello World WAR will be waiting in the target/ folder in less time than it took to read this article. spring boot hello world war file download

./mvnw clean package (or mvnw.cmd clean package on Windows) spring boot hello world war file download

Inside the extracted project, create a file: src/main/java/com/example/demo/HelloController.java spring boot hello world war file download