Spring JavaConfig @Import example | @Import Annotation in Spring JavaConfig | Spring Tutorial

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Spring JavaConfig @Import example | @Import Annotation in Spring JavaConfig | Spring Tutorial

Spring JavaConfig @Import example | @Import Annotation in Spring JavaConfig | Spring Tutorial

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>

Employee.java

package com.ram.model;

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

    public Employee(int id, String name)
    {
        System.out.println("Employee(int id, String name) constructor "
                + "is called by the Spring container");
        this.id = id;
        this.name = name;
    }

    public void displayEmployeeDetails()
    {
        System.out.println("Employee [id=" + id + ", name=" + name + "]");
    }

}

EmployeeConfig.java

package com.ram.config;

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

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 EmployeeConfig
{

    @Bean(name = "employee")
    public Employee getEmployee()
    {
        return new Employee(36,"Peter");
    }

}

ApplicationBeans.java

package com.ram.config;

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

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

}

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)");
        employee.displayEmployeeDetails();

    }

}

Output

Oct 06, 2018 8:30:01 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@5f4da5c3: startup date [Sat Oct 06 08:30:01 IST 2018]; root of context hierarchy
Employee(int id, String name) constructor is called by the Spring container
---------------------------------------
Got employee object from the ApplicationContext(Spring Container)
Employee [id=36, name=Peter]

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

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

Bitbucket Link:
https://bitbucket.org/ramram43210/spring/src/864d48b49c31c0a6d41770bb5dba6b0893945b87/Spring_2018/SpringDemo_JavaConfig_import/?at=master

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