package com.mkyong.hello;
public interface HelloWorld {
void printHelloWorld(String msg);
}
package com.mkyong.hello.impl;
import com.mkyong.hello.HelloWorld;
public class HelloWorldImpl implements HelloWorld {
@Override public void printHelloWorld(String msg) {
System.out.println("Hello : " + msg);
}
}
package com.mkyong.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import com.mkyong.hello.HelloWorld;
import com.mkyong.hello.impl.HelloWorldImpl;
@Configuration
public class AppConfig {
@Bean(name="helloBean")
public HelloWorld helloWorld() {
return new HelloWorldImpl();
}
}
package com.mkyong.core;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import com.mkyong.config.AppConfig;
import com.mkyong.hello.HelloWorld;
public class App {
public static void main(String[] args) {
ApplicationContext context = new AnnotationConfigApplicationContext(AppConfig.class);
HelloWorld obj = (HelloWorld) context.getBean("helloBean");
obj.printHelloWorld("Spring3 Java Config");
}
}
