Hello world

PC26-Spring/src/main/java/com/example/demo/PierwszyController.java

+package com.example.demo;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+@Controller
+public class PierwszyController {
+	
+	@RequestMapping("/hello")
+	@ResponseBody
+	public String hello() {
+		return "Hello world";
+	}
+
+}