JAVA EE: May 2018

Friday, 25 May 2018

How to Inject Set having Dependent Object using Spring dependency injection by constructor?

Click here to watch on Youtube:
https://www.youtube.com/watch?v=WIwhTIPYjq0&list=UUhwKlOVR041tngjerWxVccw

Click the below Image to Enlarge:

How to Inject Set having Dependent Object using Spring dependency injection by constructor?

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>

Fruit.java

package com.ram.model;

public class Fruit

{

    private String name;

    private String color;

    public Fruit(String name, String color)

    {

        System.out.println("Fruit(String name, String color) "

                + "constructor is called by the Spring container");

        this.name = name;

        this.color = color;

    }

    @Override

    public String toString()

    {

        return "Fruit [name=" + name + ", color=" + color + "]";

    }

}

FruitShop.java

package com.ram.core;

import java.util.Set;

import com.ram.model.Fruit;

public class FruitShop

{

    private String shopName;

    private Set<Fruit> setOfAvailableFruits;

    public FruitShop(String shopName, Set<Fruit> setOfAvailableFruits)

    {

        System.out.println(

                "FruitShop(String shopName, Set<Fruit> setOfAvailableFruits) "

                        + "constructor is called by the Spring container");

        this.shopName = shopName;

        this.setOfAvailableFruits = setOfAvailableFruits;

    }

    public void displayFruitShopInfo()

    {

        System.out.println("FruitShop [shopName=" + shopName

                + ", setOfAvailableFruits=" + setOfAvailableFruits + "]");

    }

}

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="fruit1" class="com.ram.model.Fruit">

        <constructor-arg type="String" value="Apple"></constructor-arg>

        <constructor-arg type="String" value="Red"></constructor-arg>

    </bean>

    <bean id="fruit2" class="com.ram.model.Fruit">

        <constructor-arg type="String" value="Grapes"></constructor-arg>

        <constructor-arg type="String" value="Violet"></constructor-arg>

    </bean>

    <bean id="fruitShop" class="com.ram.core.FruitShop">

        <constructor-arg type="String" value="Fruit Mart"></constructor-arg>

        <constructor-arg type="java.util.Set">

            <set>

                <ref bean="fruit1" />

                <ref bean="fruit2" />

            </set>

        </constructor-arg>

    </bean>

</beans>

App.java

package com.ram.core;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class App

{

    public static void main(String[] args)

    {

        ApplicationContext context = new ClassPathXmlApplicationContext(

                "applicationContext.xml");

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

        FruitShop fruitShop = (FruitShop) context.getBean("fruitShop");

        System.out.println(

                "Got fruitShop object from the ApplicationContext(Spring Container)");

        fruitShop.displayFruitShopInfo();

    }

}

Output

Apr 27, 2018 9:28:32 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh

INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@5b37e0d2: startup date [Fri Apr 27 09:28:32 IST 2018]; root of context hierarchy

Apr 27, 2018 9:28:32 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions

INFO: Loading XML bean definitions from class path resource [applicationContext.xml]

Fruit(String name, String color) constructor is called by the Spring container

Fruit(String name, String color) constructor is called by the Spring container

FruitShop(String shopName, Set<Fruit> setOfAvailableFruits) constructor is called by the Spring container

---------------------------------------

Got fruitShop object from the ApplicationContext(Spring Container)

FruitShop [shopName=Fruit Mart, setOfAvailableFruits=[Fruit [name=Apple, color=Red], Fruit [name=Grapes, color=Violet]]]

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

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

Bitbucket Link:
https://bitbucket.org/ramram43210/spring/src/a1d5b66cf948298a0bb7c33e9b2c0967275f5a95/Spring_2018/SpringDemo_DI_Set_DependentObject/?at=master

See also:

All JavaEE Videos Playlist

All Design Patterns Links

JDBC Tutorial

Java Collection Framework Tutorial

JAVA Tutorial

Kids Tutorial

Cooking Tutorial

How to Inject Set Collection using Spring dependency injection by constructor? | Spring Tutorial

Click here to watch on Youtube:
https://www.youtube.com/watch?v=X11QSQQWcnI&list=UUhwKlOVR041tngjerWxVccw

Click the below Image to Enlarge:

How to Inject Set Collection using Spring dependency injection by constructor? | 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>

FruitShop.java

package com.ram.core;

import java.util.Set;

public class FruitShop

{

    private String shopName;

    private Set<String> setOfAvailableFruits;

    public FruitShop(String shopName, Set<String> setOfAvailableFruits)

    {

        System.out.println(

                "FruitShop(String shopName, Set<String> setOfAvailableFruits) "

                        + "constructor is called by the Spring container");

        this.shopName = shopName;

        this.setOfAvailableFruits = setOfAvailableFruits;

    }

    public void displayFruitShopInfo()

    {

        System.out.println("FruitShop [shopName=" + shopName

                + ", setOfAvailableFruits=" + setOfAvailableFruits + "]");

    }

}

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="fruitShop" class="com.ram.core.FruitShop">

        <constructor-arg type="String" value="Fruit Mart"></constructor-arg>

        <constructor-arg type="java.util.Set">

            <set>

                <value>apple</value>

                <value>pineapple</value>

                <value>orange</value>

            </set>

        </constructor-arg>

    </bean>

</beans>

App.java

package com.ram.core;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class App

{

    public static void main(String[] args)

    {

        ApplicationContext context = new ClassPathXmlApplicationContext(

                "applicationContext.xml");

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

        FruitShop fruitShop = (FruitShop) context.getBean("fruitShop");

        System.out.println(

                "Got fruitShop object from the ApplicationContext(Spring Container)");

        fruitShop.displayFruitShopInfo();

    }

}

Output

Apr 25, 2018 9:13:55 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh

INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@5b37e0d2: startup date [Wed Apr 25 09:13:55 IST 2018]; root of context hierarchy

Apr 25, 2018 9:13:55 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions

INFO: Loading XML bean definitions from class path resource [applicationContext.xml]

FruitShop(String shopName, Set<String> setOfAvailableFruits) constructor is called by the Spring container

---------------------------------------

Got fruitShop object from the ApplicationContext(Spring Container)

FruitShop [shopName=Fruit Mart, setOfAvailableFruits=[apple, pineapple, orange]]

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

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

Bitbucket Link:
https://bitbucket.org/ramram43210/spring/src/a1d5b66cf948298a0bb7c33e9b2c0967275f5a95/Spring_2018/SpringDemo_DI_Set_Collection/?at=master

See also:

All JavaEE Videos Playlist

All Design Patterns Links

JDBC Tutorial

Java Collection Framework Tutorial

JAVA Tutorial

Kids Tutorial

Cooking Tutorial

How to Inject List having Dependent Object using Spring dependency injection by constructor?

Click here to watch on Youtube:
https://www.youtube.com/watch?v=BhLSUvOZR1s&list=UUhwKlOVR041tngjerWxVccw

Click the below Image to Enlarge:

How to Inject List having Dependent Object using Spring dependency injection by constructor?

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>

Fruit.java

package com.ram.model;

public class Fruit

{

    private String name;

    private String color;

    public Fruit(String name, String color)

    {

        System.out.println("Fruit(String name, String color) "

                + "constructor is called by the Spring container");

        this.name = name;

        this.color = color;

    }

    @Override

    public String toString()

    {

        return "Fruit [name=" + name + ", color=" + color + "]";

    }

}

FruitShop.java

package com.ram.core;

import java.util.List;

import com.ram.model.Fruit;

public class FruitShop

{

    private String shopName;

    private List<Fruit> listOfAvailableFruits;

    public FruitShop(String shopName, List<Fruit> listOfAvailableFruits)

    {

        System.out.println(

                "FruitShop(String shopName, List<Fruit> listOfAvailableFruits) "

                        + "constructor is called by the Spring container");

        this.shopName = shopName;

        this.listOfAvailableFruits = listOfAvailableFruits;

    }

    public void displayFruitShopInfo()

    {

        System.out.println("FruitShop [shopName=" + shopName

                + ", listOfAvailableFruits=" + listOfAvailableFruits + "]");

    }

}

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="fruit1" class="com.ram.model.Fruit">

        <constructor-arg type="String" value="Apple"></constructor-arg>

        <constructor-arg type="String" value="Red"></constructor-arg>

    </bean>

    <bean id="fruit2" class="com.ram.model.Fruit">

        <constructor-arg type="String" value="Grapes"></constructor-arg>

        <constructor-arg type="String" value="Violet"></constructor-arg>

    </bean>

    <bean id="fruitShop" class="com.ram.core.FruitShop">

        <constructor-arg type="String" value="Fruit Mart"></constructor-arg>

        <constructor-arg type="java.util.List">

            <list>

                <ref bean="fruit1" />

                <ref bean="fruit2" />

            </list>

        </constructor-arg>

    </bean>

</beans>

App.java

package com.ram.core;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class App

{

    public static void main(String[] args)

    {

        ApplicationContext context = new ClassPathXmlApplicationContext(

                "applicationContext.xml");

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

        FruitShop fruitShop = (FruitShop) context.getBean("fruitShop");

        System.out.println(

                "Got fruitShop object from the ApplicationContext(Spring Container)");

        fruitShop.displayFruitShopInfo();

    }

}

Output

Apr 26, 2018 9:42:33 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh

INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@5b37e0d2: startup date [Thu Apr 26 09:42:33 IST 2018]; root of context hierarchy

Apr 26, 2018 9:42:34 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions

INFO: Loading XML bean definitions from class path resource [applicationContext.xml]

Fruit(String name, String color) constructor is called by the Spring container

Fruit(String name, String color) constructor is called by the Spring container

FruitShop(String shopName, List<Fruit> listOfAvailableFruits) constructor is called by the Spring container

---------------------------------------

Got fruitShop object from the ApplicationContext(Spring Container)

FruitShop [shopName=Fruit Mart, listOfAvailableFruits=[Fruit [name=Apple, color=Red], Fruit [name=Grapes, color=Violet]]]