using Greeting model in controller

src/main/java/com/example/demo/DemoApplication.java

@@ -1,13 +1,23 @@
 package com.example.demo;
 
+import com.example.demo.Greeting;
+
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
 
 @SpringBootApplication
+@RestController
 public class DemoApplication {
 
 	public static void main(String[] args) {
 		SpringApplication.run(DemoApplication.class, args);
 	}
 
+	@GetMapping("/hello")
+	public Greeting hello() {
+		return new Greeting(1, "hi");
+	}
+
 }