Spring Boot Hello World Application IntelliJ IDEA

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package com.netrox.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }

}

@RestController
@RequestMapping(path="/")
class DemoController{
    @RequestMapping(value="print/{msg}", method= RequestMethod.GET)
    public String print(@PathVariable(value= "") String msg){
         return "Hello From "+msg;
    }


}