@Configuration,@Bean(name="helloBean") in springs example,this is remove configuration through xml into java class.

package javaconfig;

public interface HelloNaveen {
void print(String msg);
}

its implementation class

package javaconfig;

public class Hello implements HelloNaveen {

@Override

public void print(String msg) {

System.out.println("Hello"+msg);

}

}

package javaconfig;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.annotation.Bean;

@Configuration

public class Appconfig {

@Bean(name="helloBean")

public HelloNaveen hello1()

{

return new Hello();

}

}

package javaconfig;

import org.springframework.context.ApplicationContext;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;

public class Main {

public static void main(String[] args) {

ApplicationContext tx=new AnnotationConfigApplicationContext(Appconfig.class);

Hello h=(Hello)tx.getBean("helloBean");

h.print("Naveen && JYoti");

}

}