package cn.netkiller.service;

public interface HelloWorldService {
String sayHello(String name);
}
        
        

        
package cn.netkiller.service.impl;

import org.springframework.stereotype.Component;

import cn.netkiller.service.HelloWorldService;

@Component
public class HelloWorldServiceImpl implements HelloWorldService {
@Override
public String sayHello(String name) {
    return "Hello World! " + name;
}
}