springIOC : @Autowired on constructor

Address.java

=========

package myspring;

public class Address {

   

private String city; 

private String state; 

private String country;

public Address(){}

public Address(String city, String state, String country) {

    System.out.println("Address constructor");

    this.city = city; 

    this.state = state; 

    this.country = country; 

}

public String toString(){ 

    return city+" "+state+" "+country; 

} 

   

}

Employee.java

==========

package myspring;

import org.springframework.beans.factory.annotation.Autowired;

public class Employee {

private int id; 

private String name; 

private Address address12;//Aggregation

@Autowired

public Employee(int id, String name, Address address12) {   

    this.id = id; 

    this.name = name; 

    this.address12 = address12; 

} 

 

void show(){ 

    System.out.println(id+" "+name); 

    System.out.println(address12); 

}  

}

Beans.xml

=======

<?xml version="1.0" encoding="UTF-8"?>

<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-4.0.xsd">

    <context:annotation-config />

       <!--<bean id="emp" class="myspringIOC.Employee" autowire="byName"> -->

        <bean id="emp" class="myspring.Employee" >

        <constructor-arg name="id" value="1111"></constructor-arg>

        <constructor-arg name="name" value="Thomas"></constructor-arg>

        <!--<property name="address" ref="addr"> </property>  -->

   

    </bean>

            <bean id="address12" class="myspring.Address" >

        <constructor-arg name="city" value="Chennai">   </constructor-arg>

        <constructor-arg name="state" value="Karnataka">   </constructor-arg>

        <constructor-arg name="country" value="India" >   </constructor-arg>

   

    </bean>

    <bean id="address" class="myspring.Address" >

        <constructor-arg name="city" value="Bengaluru">   </constructor-arg>

        <constructor-arg name="state" value="Karnataka">   </constructor-arg>

        <constructor-arg name="country" value="India" >   </constructor-arg>

   

    </bean>

   

</beans>

Test.java

=======

package myspring;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Test {

      public static void main(String[] args) {

          ApplicationContext context = new ClassPathXmlApplicationContext("Beans.xml");

          Employee emp = (Employee)context.getBean("emp");

          emp.show();

    }

}