Spring_App_8_JavaConfig

package com.amit.beans;

public class HelloBean
{
public HelloBean()
{
System.out.println("HelloBean Loanding....");
}
public String sayHello()
{
return "Message from HelloBean";
}

}

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package com.amit.beans;

public class WelcomeBean  // Class of Bean needs to be mentioned in BeanConfiguration

{

public WelcomeBean()

{

System.out.println("WelcomeBean Loading.....");

}

public String getMsg() 

{

return "Message 1 from WelcomeBEAN";

}

}

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package com.amit.config;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import com.amit.beans.HelloBean;

import com.amit.beans.WelcomeBean;

@Configuration   // optional

public class BeanConfiguration 

{

@Bean        //returned object in bean therefore declare @Bean

public WelcomeBean welcome_Bean() // id = welcome_Bean

{

return new WelcomeBean();

}

@Bean

public HelloBean helloBean()

{

return new HelloBean();

}

}

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package com.amit.Test;

import org.springframework.context.ApplicationContext;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;

import com.amit.beans.HelloBean;

import com.amit.beans.WelcomeBean;

import com.amit.config.BeanConfiguration;

public class Test {

public static void main(String[] args) 

{

  ApplicationContext context = new AnnotationConfigApplicationContext(BeanConfiguration.class);

  WelcomeBean bean = (WelcomeBean)context.getBean("welcome_Bean");  //welcomeBean act like id (in classpathxmlApplicationcontext)

  String s = bean.getMsg();

  System.out.println("MSG: "+s);

  

  HelloBean bean2 = (HelloBean)context.getBean("helloBean");

  String s2 = bean2.sayHello();

  System.out.println("MSG: "+s2);

  

  

  

  

}

}

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