Inject Spring inner bean using setter

Spring - Injecting Inner Beans as setter injection

package com.rk.inner;

public class Person {

      private String name;

      private Address address;

      public Person() {

      }

     

      @Override

      public String toString() {

            return name +" lives at "+ address;

      }

     

      // setters and getters

}

public class Address {

      private String area;

      private String city;

      @Override

      public String toString() {

            return "area : "+area+" city: "+city;

      }

     

      // setters and getters

}

Use inner class as property:

Spring-Person-Inner.xml

<beans xmlns="http://www.springframework.org/schema/beans"

      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

      xsi:schemaLocation="http://www.springframework.org/schema/beans

      http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

      <bean id="PersonBean" class="com.rk.inner.Person">

            <property name="name" value="rajesh"/>

            <property name="address">

                  <bean class="com.rk.inner.Address">

                        <property name="area" value="dempier"/>

                        <property name="city" value="mathura"/>

                  </bean>

            </property>

      </bean>

</beans>

Use inner class as “ref” property:

<beans xmlns="http://www.springframework.org/schema/beans"

      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

      xsi:schemaLocation="http://www.springframework.org/schema/beans

      http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

      <bean id="PersonBean" class="com.rk.inner.Person">

            <property name="name" value="rajesh"/>

            <property name="address" ref="addressBean"/>

      </bean>

      <bean id="addressBean" class="com.rk.inner.Address">

            <property name="area" value="dempier"/>

            <property name="city" value="mathura"/>

      </bean>

</beans>

importorg.springframework.context.ApplicationContext;

import org.springframework.context.support.

ClassPathXmlApplicationContext;

public class TestInnerClass {

      public static void main( String[] args ) {

            ApplicationContext context =

                  new ClassPathXmlApplicationContext(

                  new String[] {"com/rk/inner/Spring-Person-Inner.xml"});

           

            Person cust = (Person) context.getBean("PersonBean");

            System.out.println(cust);

      }

}

Output: rajesh lives at area : dempier city: mathura