Spring bean java based configuration using @Configuration and @Bean[employee and address]

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Spring bean java based configuration using @Configuration and @Bean[employee and address]

Spring bean java based configuration using @Configuration and @Bean[employee and address]

Spring bean java based configuration using @Configuration and @Bean[employee and address]

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;

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

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

    public int getId()
    {
        return id;
    }

    public void setId(int id)
    {
        this.id = id;
    }

    public String getName()
    {
        return name;
    }

    public void setName(String name)
    {
        this.name = name;
    }

    public Address getAddress()
    {
        return address;
    }

    public void setAddress(Address address)
    {
        this.address = address;
    }

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

}

ApplicationBeans.java

package com.ram.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.ram.model.Address;
import com.ram.model.Employee;

/**
 * Annotate with @Configuration to tell Spring that this is the core
 * Spring configuration file, and define bean via @Bean.
 */
@Configuration
public class ApplicationBeans
{

    @Bean(name = "address")
    public Address getAddress()
    {
        Address address = new Address();
        address.setCity("TamilNadu");
        address.setState("Chennai");
        return address;
    }

    @Bean(name = "employee")
    public Employee getEmployee()
    {
        Employee employee = new Employee();
        employee.setId(100);
        employee.setName("Peter");
        return employee;
    }

}

App.java

package com.ram.core;

import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;

import com.ram.config.ApplicationBeans;
import com.ram.model.Employee;

public class App
{
    public static void main(String[] args)
    {
        ApplicationContext context = new AnnotationConfigApplicationContext(
                ApplicationBeans.class);

        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

Oct 02, 2018 9:40:30 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@5f4da5c3: startup date [Tue Oct 02 09:40:30 IST 2018]; root of context hierarchy
---------------------------------------
Got employee object from the ApplicationContext(Spring Container)
Employee [id=100, 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_Java_config_employee_address.zip?attredirects=0&d=1

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

Bitbucket Link:
https://bitbucket.org/ramram43210/spring/src/e16b8c6ef73a72464fa5812e24080179c4adc913/Spring_2018/SpringDemo_Java_config_employee_address/?at=master

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