How to inject the inner bean in spring using Constructor dependency Injection

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How to inject the inner bean in spring using Constructor dependency Injection

How to inject the inner bean in spring using Constructor dependency Injection

How to inject the inner bean in spring using Constructor dependency Injection

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0%20http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.ram.core</groupId>
    <artifactId>SpringDemo</artifactId>
    <packaging>jar</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>SpringDemo</name>
    <url>http://maven.apache.org</url>

    <properties>
        <spring.version>5.0.2.RELEASE</spring.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>

        <!-- Spring 5 dependencies -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
    </dependencies>
</project>

Address.java

package com.ram.model;

public class Address
{
    private String city;
    private String state;

    public String getCity()
    {
        return city;
    }

    public void setCity(String city)
    {
        this.city = city;
    }

    public String getState()
    {
        return state;
    }

    public void setState(String state)
    {
        this.state = state;
    }

    @Override
    public String toString()
    {
        return "Address [city=" + city + ", state=" + state + "]";
    }

}

Employee.java

package com.ram.model;

public class Employee
{
    private int id;
    private String name;
    private Address address;

    public Employee(int id, String name, Address address)
    {
        this.id = id;
        this.name = name;
        this.address = address;
    }

    @Override
    public String toString()
    {
        return "Employee [id=" + id + ", name=" + name + ", address=" + address
                + "]";
    }

}

applicationContext.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-4.3.xsd">

    <bean id="employee" class="com.ram.model.Employee">

        <constructor-arg type="int" value="36"></constructor-arg>
        <constructor-arg type="String" value="Peter"></constructor-arg>

        <constructor-arg>
            <bean class="com.ram.model.Address">
                <property name="city" value="TamilNadu"></property>
                <property name="state" value="Chennai"></property>
            </bean>
        </constructor-arg>

    </bean>

</beans>

App.java

package com.ram.core;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.ram.model.Employee;

public class App
{
    public static void main(String[] args)
    {
        ApplicationContext context = new ClassPathXmlApplicationContext(
                "applicationContext.xml");

        System.out.println("-------------------------------------------");

        Employee employee = (Employee) context.getBean("employee");
        System.out.println(
                "Got employee object from the ApplicationContext(Spring Container)");

        System.out.println(employee);

    }

}

Output

Jul 15, 2018 6:50:16 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@5b37e0d2: startup date [Sun Jul 15 06:50:16 IST 2018]; root of context hierarchy
Jul 15, 2018 6:50:16 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [applicationContext.xml]
-------------------------------------------
Got employee object from the ApplicationContext(Spring Container)
Employee [id=36, name=Peter, address=Address [city=TamilNadu, state=Chennai]]

Click the below link to download the code:
https://sites.google.com/site/ramj2eev2/java_basics/SpringDemo_Innerbean_constructor_injection.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/javaee/tree/master/Spring_2018/SpringDemo_Innerbean_constructor_injection

Bitbucket Link:
https://bitbucket.org/ramram43210/spring/src/42c66b7d9692a3dc3e770c804733a8013c61553b/Spring_2018/SpringDemo_Innerbean_constructor_injection/?at=master

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