Using lazy-init-ed bean as constructor-arg failing

[NoName Human]

Hey all

I am new to Spring and learning the DI. I have three simple classes for an experiment.

Class1:

import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Class1{
public static void main(String args[]){
    new ClassPathXmlApplicationContext("Beans.xml");
}
}

Class2:

import java.util.Scanner;

import org.springframework.beans.BeansException;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Lazy;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

@Configuration
public class Class2 implements ApplicationContextAware{

public String test;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    applicationContext.getBean("class3"); //NPE here
    }

@Lazy
@Bean
public String getTest(){
return test;
}

public Class2(){
Scanner scanner = new Scanner(System.in);
test = scanner.next();
}

}

Class3:

public class Class3{

public Class3(String test){
    System.out.println(test);
}
}

Beans.xml:

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.0.xsd">

<context:annotation-config/>

<bean id = "class2" class="Class2" scope="prototype"/>
<bean id = "class3" class="Class3" lazy-init="true">
    <constructor-arg ref="getTest"/>
</bean>

</beans>

But as pointed in code, it keeps giving me NPE. Even using @Autowired in Class3 gives error. Please suggest what am I doing wrong?

EDIT:

If I dont set the scope to be prototype, it works fine. Else it doesn't.
But I need the scope to be prototype since I want this bean to have a new instance everytime its launched (I am calling it using a button click. But I did not include that code for sake of simplification).