Application.java. Demo file for Spring Boot

Application.java

package demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@ComponentScan
@EnableAutoConfiguration
@RestController
public class Application {
	
	@RequestMapping("/")
	public String hello() {
		return "Hello World!";
	}
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}