[BAEL-16662] Move articles out of spring-core and into spring-di and … (#7750)

* [BAEL-16662] Move articles out of spring-core and into spring-di and spring-core-2

* [BAEL-16662] Fixed required config classes

* [BAEL-16662] - Removed unused dependencies from spring-core

spring-di/README.md

@@ -1,3 +1,11 @@
 ### Relevant Articles
 
 - [The Spring @Qualifier Annotation](https://www.baeldung.com/spring-qualifier-annotation)
+- [Constructor Dependency Injection in Spring](http://www.baeldung.com/constructor-injection-in-spring)
+- [Spring Autowiring of Generic Types](https://www.baeldung.com/spring-autowire-generics)
+- [Guice vs Spring – Dependency Injection](https://www.baeldung.com/guice-spring-dependency-injection)
+- [Injecting Prototype Beans into a Singleton Instance in Spring](http://www.baeldung.com/spring-inject-prototype-bean-into-singleton)
+- [@Lookup Annotation in Spring](http://www.baeldung.com/spring-lookup)
+- [Controlling Bean Creation Order with @DependsOn Annotation](http://www.baeldung.com/spring-depends-on)
+- [Unsatisfied Dependency in Spring](https://www.baeldung.com/spring-unsatisfied-dependency)
+- [Circular Dependencies in Spring](http://www.baeldung.com/circular-dependencies-in-spring)

spring-di/pom.xml

@@ -9,18 +9,70 @@
     <name>spring-di</name>
 
     <parent>
-        <artifactId>parent-boot-2</artifactId>
         <groupId>com.baeldung</groupId>
+        <artifactId>parent-spring-5</artifactId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../parent-boot-2</relativePath>
+        <relativePath>../parent-spring-5</relativePath>
     </parent>
 
     <dependencies>
-        <!-- Spring -->
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-test</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-beans</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-context</artifactId>
+            <version>${spring.version}</version>
         </dependency>
+        <dependency>
+            <groupId>javax.inject</groupId>
+            <artifactId>javax.inject</artifactId>
+            <version>${javax.inject.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>${lombok.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+            <version>${spring-boot.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-test</artifactId>
+            <version>${mockito.spring.boot.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>commons-io</groupId>
+            <artifactId>commons-io</artifactId>
+            <version>${commons.io.version}</version>
+        </dependency>
+        <!-- Spring -->
+<!--        <dependency>-->
+<!--            <groupId>org.springframework</groupId>-->
+<!--            <artifactId>spring-context</artifactId>-->
+<!--        </dependency>-->
 
         <dependency>
             <groupId>javax.annotation</groupId>
@@ -28,12 +80,12 @@
             <version>${annotation-api.version}</version>
         </dependency>
 
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.springframework</groupId>
-            <artifactId>spring-test</artifactId>
-            <scope>test</scope>
-        </dependency>
+<!--        &lt;!&ndash; test scoped &ndash;&gt;-->
+<!--        <dependency>-->
+<!--            <groupId>org.springframework</groupId>-->
+<!--            <artifactId>spring-test</artifactId>-->
+<!--            <scope>test</scope>-->
+<!--        </dependency>-->
 
     </dependencies>
 
@@ -97,6 +149,14 @@
         <!-- Spring -->
         <org.springframework.version>5.0.6.RELEASE</org.springframework.version>
         <annotation-api.version>1.3.2</annotation-api.version>
+
+        <mockito.spring.boot.version>1.4.4.RELEASE</mockito.spring.boot.version>
+        <javax.inject.version>1</javax.inject.version>
+        <guava.version>20.0</guava.version>
+        <commons.io.version>2.5</commons.io.version>
+        <spring-boot.version>1.5.2.RELEASE</spring-boot.version>
+        <mockito.version>1.10.19</mockito.version>
+        <assertj.version>3.12.2</assertj.version>
     </properties>
 
 </project>

spring-di/src/main/java/com/baeldung/circulardependency/CircularDependencyA.java

@@ -0,0 +1,29 @@
+package com.baeldung.circulardependency;
+
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
+import org.springframework.stereotype.Component;
+
+@Component
+public class CircularDependencyA implements ApplicationContextAware, InitializingBean {
+
+	private CircularDependencyB circB;
+
+	private ApplicationContext context;
+
+	public CircularDependencyB getCircB() {
+		return circB;
+	}
+
+	@Override
+	public void afterPropertiesSet() throws Exception {
+		circB = context.getBean(CircularDependencyB.class);
+	}
+
+	@Override
+	public void setApplicationContext(final ApplicationContext ctx) throws BeansException {
+		context = ctx;
+	}
+}

spring-di/src/main/java/com/baeldung/circulardependency/CircularDependencyB.java

@@ -0,0 +1,22 @@
+package com.baeldung.circulardependency;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class CircularDependencyB {
+
+	private CircularDependencyA circA;
+
+	private String message = "Hi!";
+
+	@Autowired
+	public void setCircA(final CircularDependencyA circA) {
+		this.circA = circA;
+	}
+
+	public String getMessage() {
+		return message;
+	}
+
+}

spring-di/src/main/java/com/baeldung/constructordi/Config.java

@@ -0,0 +1,23 @@
+package com.baeldung.constructordi;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+import com.baeldung.constructordi.domain.Engine;
+import com.baeldung.constructordi.domain.Transmission;
+
+@Configuration
+@ComponentScan("com.baeldung.constructordi")
+public class Config {
+
+    @Bean
+    public Engine engine() {
+        return new Engine("v8", 5);
+    }
+
+    @Bean
+    public Transmission transmission() {
+        return new Transmission("sliding");
+    }
+}

spring-di/src/main/java/com/baeldung/constructordi/SpringRunner.java

@@ -0,0 +1,31 @@
+package com.baeldung.constructordi;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+import com.baeldung.constructordi.domain.Car;
+
+public class SpringRunner {
+    public static void main(String[] args) {
+        Car toyota = getCarFromXml();
+
+        System.out.println(toyota);
+
+        toyota = getCarFromJavaConfig();
+
+        System.out.println(toyota);
+    }
+
+    private static Car getCarFromJavaConfig() {
+        ApplicationContext context = new AnnotationConfigApplicationContext(Config.class);
+
+        return context.getBean(Car.class);
+    }
+
+    private static Car getCarFromXml() {
+        ApplicationContext context = new ClassPathXmlApplicationContext("constructordi.xml");
+
+        return context.getBean(Car.class);
+    }
+}

spring-di/src/main/java/com/baeldung/constructordi/domain/Car.java

@@ -0,0 +1,21 @@
+package com.baeldung.constructordi.domain;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class Car {
+    private Engine engine;
+    private Transmission transmission;
+
+    @Autowired
+    public Car(Engine engine, Transmission transmission) {
+        this.engine = engine;
+        this.transmission = transmission;
+    }
+
+    @Override
+    public String toString() {
+        return String.format("Engine: %s Transmission: %s", engine, transmission);
+    }
+}

spring-di/src/main/java/com/baeldung/constructordi/domain/Engine.java

@@ -0,0 +1,16 @@
+package com.baeldung.constructordi.domain;
+
+public class Engine {
+    private String type;
+    private int volume;
+
+    public Engine(String type, int volume) {
+        this.type = type;
+        this.volume = volume;
+    }
+
+    @Override
+    public String toString() {
+        return String.format("%s %d", type, volume);
+    }
+}

spring-di/src/main/java/com/baeldung/constructordi/domain/Transmission.java

@@ -0,0 +1,14 @@
+package com.baeldung.constructordi.domain;
+
+public class Transmission {
+	private String type;
+
+	public Transmission(String type) {
+		this.type = type;
+	}
+
+	@Override
+	public String toString() {
+		return String.format("%s", type);
+	}
+}

spring-di/src/main/java/com/baeldung/dependency/AnotherArbitraryDependency.java

@@ -0,0 +1,13 @@
+package com.baeldung.dependency;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class AnotherArbitraryDependency extends ArbitraryDependency {
+
+    private final String label = "Another Arbitrary Dependency";
+
+    public String toString() {
+        return label;
+    }
+}

spring-di/src/main/java/com/baeldung/dependency/ArbitraryDependency.java

@@ -0,0 +1,13 @@
+package com.baeldung.dependency;
+
+import org.springframework.stereotype.Component;
+
+@Component(value = "autowiredFieldDependency")
+public class ArbitraryDependency {
+
+    private final String label = "Arbitrary Dependency";
+
+    public String toString() {
+        return label;
+    }
+}

spring-di/src/main/java/com/baeldung/dependency/YetAnotherArbitraryDependency.java

@@ -0,0 +1,13 @@
+package com.baeldung.dependency;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class YetAnotherArbitraryDependency extends ArbitraryDependency {
+
+    private final String label = "Yet Another Arbitrary Dependency";
+
+    public String toString() {
+        return label;
+    }
+}

spring-di/src/main/java/com/baeldung/dependency/exception/app/PurchaseDeptService.java

@@ -0,0 +1,14 @@
+package com.baeldung.dependency.exception.app;
+
+import com.baeldung.dependency.exception.repository.InventoryRepository;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.stereotype.Service;
+
+@Service
+public class PurchaseDeptService {
+    private InventoryRepository repository;
+
+    public PurchaseDeptService(@Qualifier("dresses") InventoryRepository repository) {
+        this.repository = repository;
+    }
+}

spring-di/src/main/java/com/baeldung/dependency/exception/app/SpringDependenciesExampleApplication.java

@@ -0,0 +1,13 @@
+package com.baeldung.dependency.exception.app;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.ComponentScan;
+
+@SpringBootApplication
+@ComponentScan(basePackages = "com.baeldung.dependency.exception")
+public class SpringDependenciesExampleApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(SpringDependenciesExampleApplication.class, args);
+    }
+}

spring-di/src/main/java/com/baeldung/dependency/exception/repository/DressRepository.java

@@ -0,0 +1,10 @@
+package com.baeldung.dependency.exception.repository;
+
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.context.annotation.Primary;
+import org.springframework.stereotype.Repository;
+
+@Qualifier("dresses")
+@Repository
+public class DressRepository implements InventoryRepository {
+}

spring-di/src/main/java/com/baeldung/dependency/exception/repository/InventoryRepository.java

@@ -0,0 +1,7 @@
+package com.baeldung.dependency.exception.repository;
+
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface InventoryRepository {
+}

spring-di/src/main/java/com/baeldung/dependency/exception/repository/ShoeRepository.java

@@ -0,0 +1,9 @@
+package com.baeldung.dependency.exception.repository;
+
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.stereotype.Repository;
+
+@Qualifier("shoes")
+@Repository
+public class ShoeRepository implements InventoryRepository {
+}

spring-di/src/main/java/com/baeldung/dependencyinjectiontypes/ArticleFormatter.java

@@ -0,0 +1,16 @@
+package com.baeldung.dependencyinjectiontypes;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+public class ArticleFormatter {
+
+    @SuppressWarnings("resource")
+    public static void main(String[] args) {    	
+        ApplicationContext context = new ClassPathXmlApplicationContext("dependencyinjectiontypes-context.xml");
+        ArticleWithSetterInjection article = (ArticleWithSetterInjection) context.getBean("articleWithSetterInjectionBean");
+        String formattedArticle = article.format("This is a text !");
+        
+        System.out.print(formattedArticle);
+    }
+}

spring-di/src/main/java/com/baeldung/dependencyinjectiontypes/ArticleWithConstructorInjection.java

@@ -0,0 +1,17 @@
+package com.baeldung.dependencyinjectiontypes;
+
+import org.springframework.beans.factory.annotation.Autowired;
+
+public class ArticleWithConstructorInjection {
+
+	private TextFormatter formatter;
+
+	@Autowired
+    public ArticleWithConstructorInjection(TextFormatter formatter) {
+        this.formatter = formatter;
+    }
+
+    public String format(String text) {
+        return formatter.format(text);
+    }
+}

spring-di/src/main/java/com/baeldung/dependencyinjectiontypes/ArticleWithSetterInjection.java

@@ -0,0 +1,21 @@
+package com.baeldung.dependencyinjectiontypes;
+
+import org.springframework.beans.factory.annotation.Autowired;
+
+public class ArticleWithSetterInjection {
+
+    private TextFormatter formatter;
+
+    public ArticleWithSetterInjection(TextFormatter formatter) {
+        this.formatter = formatter;
+    }
+
+    @Autowired
+    public void setTextFormatter(TextFormatter formatter) {
+        this.formatter = formatter;
+    }
+    
+    public String format(String text) {
+        return formatter.format(text);
+    }
+}

spring-di/src/main/java/com/baeldung/dependencyinjectiontypes/TextFormatter.java

@@ -0,0 +1,8 @@
+package com.baeldung.dependencyinjectiontypes;
+
+public class TextFormatter {
+
+    public String format(String text) {
+        return text.toUpperCase();
+    }
+}

spring-di/src/main/java/com/baeldung/dependencyinjectiontypes/annotation/CarQualifier.java

@@ -0,0 +1,15 @@
+package com.baeldung.dependencyinjectiontypes.annotation;
+
+import org.springframework.beans.factory.annotation.Qualifier;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target({ElementType.FIELD, ElementType.METHOD,
+        ElementType.TYPE, ElementType.PARAMETER})
+@Retention(RetentionPolicy.RUNTIME)
+@Qualifier
+public @interface CarQualifier {
+}

spring-di/src/main/java/com/baeldung/dependencyinjectiontypes/app/CustomConfiguration.java

@@ -0,0 +1,39 @@
+package com.baeldung.dependencyinjectiontypes.app;
+
+import com.baeldung.dependencyinjectiontypes.annotation.CarQualifier;
+import com.baeldung.dependencyinjectiontypes.model.Car;
+import com.baeldung.dependencyinjectiontypes.model.CarHandler;
+import com.baeldung.dependencyinjectiontypes.model.Motorcycle;
+import com.baeldung.dependencyinjectiontypes.model.Vehicle;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+
+@SpringBootApplication
+@ComponentScan("com.baeldung.dependencyinjectiontypes.model")
+public class CustomConfiguration {
+	@Bean
+	@CarQualifier
+	public Car getMercedes() {
+		return new Car("E280", "Mercedes", "Diesel");
+	}
+
+	public static void main(String[] args) throws NoSuchFieldException {
+		ConfigurableApplicationContext context = SpringApplication.run(CustomConfiguration.class, args);
+		CarHandler carHandler = context.getBean(CarHandler.class);
+		carHandler.getVehicles().forEach(System.out::println);
+	}
+
+	@Bean
+	@CarQualifier
+	public Car getBmw() {
+		return new Car("M5", "BMW", "Petrol");
+	}
+
+	@Bean
+	public Motorcycle getSuzuki() {
+		return new Motorcycle("Yamaguchi", "Suzuki", true);
+	}
+}

spring-di/src/main/java/com/baeldung/dependencyinjectiontypes/model/Car.java

@@ -0,0 +1,25 @@
+package com.baeldung.dependencyinjectiontypes.model;
+
+public class Car extends Vehicle {
+    private String engineType;
+
+    public Car(String name, String manufacturer, String engineType) {
+        super(name, manufacturer);
+        this.engineType = engineType;
+    }
+
+    public String getEngineType() {
+        return engineType;
+    }
+
+    public void setEngineType(String engineType) {
+        this.engineType = engineType;
+    }
+
+    @Override
+    public String toString() {
+        return "Car{" +
+                "engineType='" + engineType + '\'' +
+                '}';
+    }
+}

spring-di/src/main/java/com/baeldung/dependencyinjectiontypes/model/CarHandler.java

@@ -0,0 +1,26 @@
+package com.baeldung.dependencyinjectiontypes.model;
+
+import com.baeldung.dependencyinjectiontypes.annotation.CarQualifier;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.ResolvableType;
+import org.springframework.stereotype.Component;
+
+import java.util.List;
+
+@Component
+public class CarHandler {
+
+    @Autowired
+    @CarQualifier
+    private List<Vehicle> vehicles;
+
+    public List<Vehicle> getVehicles() throws NoSuchFieldException {
+        ResolvableType vehiclesType = ResolvableType.forField(getClass().getDeclaredField("vehicles"));
+        System.out.println(vehiclesType);
+        ResolvableType type = vehiclesType.getGeneric();
+        System.out.println(type);
+        Class<?> aClass = type.resolve();
+        System.out.println(aClass);
+        return this.vehicles;
+    }
+}

spring-di/src/main/java/com/baeldung/dependencyinjectiontypes/model/Motorcycle.java

@@ -0,0 +1,25 @@
+package com.baeldung.dependencyinjectiontypes.model;
+
+public class Motorcycle extends Vehicle {
+    private boolean twoWheeler;
+
+    public Motorcycle(String name, String manufacturer, boolean twoWheeler) {
+        super(name, manufacturer);
+        this.twoWheeler = true;
+    }
+
+    public boolean isTwoWheeler() {
+        return twoWheeler;
+    }
+
+    public void setTwoWheeler(boolean twoWheeler) {
+        this.twoWheeler = twoWheeler;
+    }
+
+    @Override
+    public String toString() {
+        return "Motorcycle{" +
+                "twoWheeler=" + twoWheeler +
+                '}';
+    }
+}

spring-di/src/main/java/com/baeldung/dependencyinjectiontypes/model/Vehicle.java

@@ -0,0 +1,28 @@
+package com.baeldung.dependencyinjectiontypes.model;
+
+public abstract class Vehicle {
+    private String name;
+    private String manufacturer;
+
+
+    public Vehicle(String name, String manufacturer) {
+        this.name = name;
+        this.manufacturer = manufacturer;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getManufacturer() {
+        return manufacturer;
+    }
+
+    public void setManufacturer(String manufacturer) {
+        this.manufacturer = manufacturer;
+    }
+}

spring-di/src/main/java/com/baeldung/dependson/DriverApplication.java

@@ -0,0 +1,14 @@
+package com.baeldung.dependson;
+
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+
+import com.baeldung.dependson.config.Config;
+import com.baeldung.dependson.file.processor.FileProcessor;
+
+public class DriverApplication {
+    public static void main(String[] args) {
+        AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(Config.class);
+        ctx.getBean(FileProcessor.class);
+        ctx.close();
+    }
+}

spring-di/src/main/java/com/baeldung/dependson/config/Config.java

@@ -0,0 +1,38 @@
+package com.baeldung.dependson.config;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.DependsOn;
+import org.springframework.context.annotation.Lazy;
+
+import com.baeldung.dependson.file.processor.FileProcessor;
+import com.baeldung.dependson.file.reader.FileReader;
+import com.baeldung.dependson.file.writer.FileWriter;
+import com.baeldung.dependson.shared.File;
+
+@Configuration
+@ComponentScan("com.baeldung.dependson")
+public class Config {
+    
+    @Autowired
+    File file;
+    
+    @Bean("fileProcessor")
+    @DependsOn({"fileReader","fileWriter"})
+    @Lazy
+    public FileProcessor fileProcessor(){
+        return new FileProcessor(file);
+    }
+    
+    @Bean("fileReader")
+    public FileReader fileReader(){
+        return new FileReader(file);
+    }
+    
+    @Bean("fileWriter")
+    public FileWriter fileWriter(){
+        return new FileWriter(file);
+    }
+}

spring-di/src/main/java/com/baeldung/dependson/file/processor/FileProcessor.java

@@ -0,0 +1,19 @@
+package com.baeldung.dependson.file.processor;
+
+import org.springframework.beans.factory.annotation.Autowired;
+
+import com.baeldung.dependson.file.reader.FileReader;
+import com.baeldung.dependson.file.writer.FileWriter;
+import com.baeldung.dependson.shared.File;
+
+public class FileProcessor {
+
+    File file;
+      
+    public FileProcessor(File file){
+        this.file = file;
+        if(file.getText().contains("write") && file.getText().contains("read")){
+            file.setText("processed");
+        }
+    }  
+}

spring-di/src/main/java/com/baeldung/dependson/file/reader/FileReader.java

@@ -0,0 +1,12 @@
+package com.baeldung.dependson.file.reader;
+
+import com.baeldung.dependson.shared.File;
+
+public class FileReader {
+
+    public FileReader(File file) {
+        file.setText("read");
+    }
+    
+    public void readFile() {}
+}

spring-di/src/main/java/com/baeldung/dependson/file/writer/FileWriter.java

@@ -0,0 +1,13 @@
+package com.baeldung.dependson.file.writer;
+
+import com.baeldung.dependson.shared.File;
+
+
+public class FileWriter {
+    
+    public FileWriter(File file){
+        file.setText("write");
+    }
+    
+    public void writeFile(){}
+}

spring-di/src/main/java/com/baeldung/dependson/shared/File.java

@@ -0,0 +1,17 @@
+package com.baeldung.dependson.shared;
+
+import org.springframework.stereotype.Service;
+
+@Service
+public class File {
+
+    private String text = "";
+
+    public String getText() {
+        return text;
+    }
+
+    public void setText(String text) {
+        this.text = this.text+text;
+    }
+}

spring-di/src/main/java/com/baeldung/di/spring/Account.java

@@ -0,0 +1,27 @@
+package com.baeldung.di.spring;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class Account {
+
+	private String accountNumber;
+	private String type;
+
+	public String getAccountNumber() {
+		return accountNumber;
+	}
+
+	public void setAccountNumber(String accountNumber) {
+		this.accountNumber = accountNumber;
+	}
+
+	public String getType() {
+		return type;
+	}
+
+	public void setType(String type) {
+		this.type = type;
+	}
+
+}

spring-di/src/main/java/com/baeldung/di/spring/AccountService.java

@@ -0,0 +1,5 @@
+package com.baeldung.di.spring;
+
+public interface AccountService {
+
+}

spring-di/src/main/java/com/baeldung/di/spring/AccountServiceImpl.java

@@ -0,0 +1,8 @@
+package com.baeldung.di.spring;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class AccountServiceImpl implements AccountService {
+
+}

spring-di/src/main/java/com/baeldung/di/spring/AudioBookService.java

@@ -0,0 +1,5 @@
+package com.baeldung.di.spring;
+
+public interface AudioBookService {
+
+}

spring-di/src/main/java/com/baeldung/di/spring/AudioBookServiceImpl.java

@@ -0,0 +1,5 @@
+package com.baeldung.di.spring;
+
+public class AudioBookServiceImpl implements AudioBookService {
+
+}

spring-di/src/main/java/com/baeldung/di/spring/AuthorService.java

@@ -0,0 +1,5 @@
+package com.baeldung.di.spring;
+
+public interface AuthorService {
+
+}

spring-di/src/main/java/com/baeldung/di/spring/AuthorServiceImpl.java

@@ -0,0 +1,5 @@
+package com.baeldung.di.spring;
+
+public class AuthorServiceImpl implements AuthorService {
+
+}

spring-di/src/main/java/com/baeldung/di/spring/BookService.java

@@ -0,0 +1,5 @@
+package com.baeldung.di.spring;
+
+public interface BookService {
+
+}

spring-di/src/main/java/com/baeldung/di/spring/BookServiceImpl.java

@@ -0,0 +1,10 @@
+package com.baeldung.di.spring;
+
+import org.springframework.beans.factory.annotation.Autowired;
+
+public class BookServiceImpl implements BookService {
+
+	@Autowired(required = false)
+	private AuthorService authorService;
+
+}

spring-di/src/main/java/com/baeldung/di/spring/Foo.java

@@ -0,0 +1,4 @@
+package com.baeldung.di.spring;
+
+public class Foo {
+}

spring-di/src/main/java/com/baeldung/di/spring/FooProcessor.java

@@ -0,0 +1,6 @@
+package com.baeldung.di.spring;
+
+public class FooProcessor {
+
+	private Foo foo;
+}

spring-di/src/main/java/com/baeldung/di/spring/IService.java

@@ -0,0 +1,5 @@
+package com.baeldung.di.spring;
+
+public interface IService {
+    public String serve();
+}

spring-di/src/main/java/com/baeldung/di/spring/IndexApp.java

@@ -0,0 +1,19 @@
+package com.baeldung.di.spring;
+
+public class IndexApp {
+
+    private IService service;
+
+    public String getServiceValue() {
+        return service.serve();
+    }
+
+    public IService getService() {
+        return service;
+    }
+
+    public void setService(IService service) {
+        this.service = service;
+    }
+
+}

spring-di/src/main/java/com/baeldung/di/spring/IndexService.java

@@ -0,0 +1,10 @@
+package com.baeldung.di.spring;
+
+public class IndexService implements IService {
+
+    @Override
+    public String serve() {
+        return "Hello World";
+    }
+
+}

spring-di/src/main/java/com/baeldung/di/spring/InstanceServiceFactory.java

@@ -0,0 +1,14 @@
+package com.baeldung.di.spring;
+
+public class InstanceServiceFactory {
+    public IService getService(int number) {
+        switch (number) {
+        case 1:
+            return new MessageService("Foo");
+        case 0:
+            return new IndexService();
+        default:
+            throw new IllegalArgumentException("Unknown parameter " + number);
+        }
+    }
+}

spring-di/src/main/java/com/baeldung/di/spring/MessageApp.java

@@ -0,0 +1,14 @@
+package com.baeldung.di.spring;
+
+public class MessageApp {
+
+    private IService iService;
+
+    public MessageApp(IService iService) {
+        this.iService = iService;
+    }
+
+    public String getServiceValue() {
+        return iService.serve();
+    }
+}

spring-di/src/main/java/com/baeldung/di/spring/MessageService.java

@@ -0,0 +1,16 @@
+package com.baeldung.di.spring;
+
+public class MessageService implements IService {
+
+    private String message;
+
+    public MessageService(String message) {
+        this.message = message;
+    }
+
+    @Override
+    public String serve() {
+        return message;
+    }
+
+}

spring-di/src/main/java/com/baeldung/di/spring/PersonDao.java

@@ -0,0 +1,5 @@
+package com.baeldung.di.spring;
+
+public interface PersonDao {
+
+}

spring-di/src/main/java/com/baeldung/di/spring/PersonDaoImpl.java

@@ -0,0 +1,8 @@
+package com.baeldung.di.spring;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class PersonDaoImpl implements PersonDao {
+
+}

spring-di/src/main/java/com/baeldung/di/spring/SpringBeansConfig.java

@@ -0,0 +1,14 @@
+package com.baeldung.di.spring;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class SpringBeansConfig {
+
+	@Bean
+	public AudioBookService audioBookServiceGenerator() {
+		return new AudioBookServiceImpl();
+	}
+
+}

spring-di/src/main/java/com/baeldung/di/spring/SpringMainConfig.java

@@ -0,0 +1,18 @@
+package com.baeldung.di.spring;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+@Configuration
+@Import({ SpringBeansConfig.class })
+@ComponentScan("com.baeldung.di.spring")
+public class SpringMainConfig {
+
+	@Bean
+	public BookService bookServiceGenerator() {
+		return new BookServiceImpl();
+	}
+
+}

spring-di/src/main/java/com/baeldung/di/spring/SpringPersonService.java

@@ -0,0 +1,20 @@
+package com.baeldung.di.spring;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class SpringPersonService {
+
+    @Autowired
+    private PersonDao personDao;
+
+    public PersonDao getPersonDao() {
+        return personDao;
+    }
+
+    public void setPersonDao(PersonDao personDao) {
+        this.personDao = personDao;
+    }
+
+}

spring-di/src/main/java/com/baeldung/di/spring/StaticServiceFactory.java

@@ -0,0 +1,14 @@
+package com.baeldung.di.spring;
+
+public class StaticServiceFactory {
+    public static IService getService(int number) {
+        switch (number) {
+        case 1:
+            return new MessageService("Foo");
+        case 0:
+            return new IndexService();
+        default:
+            throw new IllegalArgumentException("Unknown parameter " + number);
+        }
+    }
+}

spring-di/src/main/java/com/baeldung/di/spring/UserService.java

@@ -0,0 +1,20 @@
+package com.baeldung.di.spring;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class UserService {
+
+	@Autowired
+	private AccountService accountService;
+
+	public AccountService getAccountService() {
+		return accountService;
+	}
+
+	public void setAccountService(AccountService accountService) {
+		this.accountService = accountService;
+	}
+
+}

spring-di/src/main/java/com/baeldung/methodinjections/AppConfig.java

@@ -0,0 +1,10 @@
+package com.baeldung.methodinjections;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan(basePackages = "com.baeldung.methodinjections")
+
+public class AppConfig {
+}

spring-di/src/main/java/com/baeldung/methodinjections/Grader.java

@@ -0,0 +1,19 @@
+package com.baeldung.methodinjections;
+
+import java.util.Collection;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class Grader {
+
+    public String grade(Collection<Integer> marks) {
+
+        boolean result = marks.stream()
+            .anyMatch(mark -> mark < 45);
+        if (result) {
+            return "FAIL";
+        }
+        return "PASS";
+    }
+}

spring-di/src/main/java/com/baeldung/methodinjections/SchoolNotification.java

@@ -0,0 +1,45 @@
+package com.baeldung.methodinjections;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.config.ConfigurableBeanFactory;
+import org.springframework.context.annotation.Scope;
+import org.springframework.stereotype.Component;
+
+@Component("schoolNotification")
+@Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
+public class SchoolNotification {
+    @Autowired
+    Grader grader;
+
+    private String name;
+    private Collection<Integer> marks;
+
+    public SchoolNotification(String name) {
+        this.name = name;
+        this.marks = new ArrayList<Integer>();
+    }
+
+    public String addMark(Integer mark) {
+        this.marks.add(mark);
+        return this.grader.grade(this.marks);
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Collection<Integer> getMarks() {
+        return marks;
+    }
+
+    public void setMarks(Collection<Integer> marks) {
+        this.marks = marks;
+    }
+}

spring-di/src/main/java/com/baeldung/methodinjections/Student.java

@@ -0,0 +1,27 @@
+package com.baeldung.methodinjections;
+
+import org.springframework.beans.factory.annotation.Lookup;
+import org.springframework.stereotype.Component;
+
+@Component("studentBean")
+public class Student {
+
+    private String id;
+
+    /**
+     * Injects a prototype bean SchoolNotification into Singleton student
+     */
+    @Lookup
+    public SchoolNotification getNotification(String name) {
+        // spring overrides and returns a SchoolNotification instance
+        return null;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+}

spring-di/src/main/java/com/baeldung/methodinjections/StudentServices.java

@@ -0,0 +1,21 @@
+package com.baeldung.methodinjections;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.springframework.beans.factory.annotation.Lookup;
+import org.springframework.stereotype.Component;
+
+@Component("studentService")
+public abstract class StudentServices {
+
+    private Map<String, SchoolNotification> notes = new HashMap<>();
+
+    @Lookup
+    protected abstract SchoolNotification getNotification(String name);
+
+    public String appendMark(String name, Integer mark) {
+        SchoolNotification notification = notes.computeIfAbsent(name, exists -> getNotification(name));
+        return notification.addMark(mark);
+    }
+}

spring-di/src/main/java/com/baeldung/sample/App.java

@@ -1,4 +1,4 @@
-package org.baeldung.sample;
+package com.baeldung.sample;
 
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 

spring-di/src/main/java/com/baeldung/sample/AppConfig.java

@@ -1,4 +1,4 @@
-package org.baeldung.sample;
+package com.baeldung.sample;
 
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;

spring-di/src/main/java/com/baeldung/sample/Bar.java

@@ -0,0 +1,5 @@
+package com.baeldung.sample;
+
+public class Bar {
+
+}

spring-di/src/main/java/com/baeldung/sample/BarFormatter.java

@@ -1,4 +1,4 @@
-package org.baeldung.sample;
+package com.baeldung.sample;
 
 import org.springframework.stereotype.Component;
 

spring-di/src/main/java/com/baeldung/sample/Foo.java

@@ -0,0 +1,5 @@
+package com.baeldung.sample;
+
+public class Foo {
+
+}

spring-di/src/main/java/com/baeldung/sample/FooDAO.java

@@ -0,0 +1,5 @@
+package com.baeldung.sample;
+
+public class FooDAO {
+
+}

spring-di/src/main/java/com/baeldung/sample/FooFormatter.java

@@ -1,4 +1,4 @@
-package org.baeldung.sample;
+package com.baeldung.sample;
 
 import org.springframework.stereotype.Component;
 

spring-di/src/main/java/com/baeldung/sample/FooService.java

@@ -1,4 +1,4 @@
-package org.baeldung.sample;
+package com.baeldung.sample;
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;

spring-di/src/main/java/com/baeldung/sample/Formatter.java

@@ -1,4 +1,4 @@
-package org.baeldung.sample;
+package com.baeldung.sample;
 
 public interface Formatter {
 

spring-di/src/main/java/com/baeldung/sample/FormatterType.java

@@ -1,4 +1,4 @@
-package org.baeldung.sample;
+package com.baeldung.sample;
 
 import org.springframework.beans.factory.annotation.Qualifier;
 

spring-di/src/main/java/org/baeldung/sample/Bar.java

@@ -1,5 +0,0 @@
-package org.baeldung.sample;
-
-public class Bar {
-
-}

spring-di/src/main/java/org/baeldung/sample/Foo.java

@@ -1,5 +0,0 @@
-package org.baeldung.sample;
-
-public class Foo {
-
-}

spring-di/src/main/java/org/baeldung/sample/FooDAO.java

@@ -1,5 +0,0 @@
-package org.baeldung.sample;
-
-public class FooDAO {
-
-}

spring-di/src/main/resources/application.properties

@@ -0,0 +1,2 @@
+spring.profiles.active=prod
+

spring-di/src/main/resources/baeldung.xml

@@ -0,0 +1,20 @@
+<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-3.0.xsd">
+
+    <bean id="toyota" class="com.baeldung.constructordi.domain.Car">
+        <constructor-arg index="0" ref="engine"/>
+        <constructor-arg index="1" ref="transmission"/>
+    </bean>
+
+    <bean id="engine" class="com.baeldung.constructordi.domain.Engine">
+        <constructor-arg index="0" value="v4"/>
+        <constructor-arg index="1" value="2"/>
+    </bean>
+
+    <bean id="transmission" class="com.baeldung.constructordi.domain.Transmission">
+        <constructor-arg value="sliding"/>
+    </bean>
+
+</beans>

spring-di/src/main/resources/beaninjectiontypes-context.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xmlns="http://www.springframework.org/schema/beans"
+	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
+
+	<bean id="exampleDAO" class="com.baeldung.beaninjection.ExampleDAOBean">
+		<constructor-arg index="0" type="java.lang.String"
+			value="Mandatory DAO Property X" />
+	</bean>
+
+	<bean id="anotherSampleDAO" class="com.baeldung.beaninjection.AnotherSampleDAOBean">
+		<constructor-arg index="0" type="java.lang.String"
+			value="Mandatory DAO Property Y" />
+	</bean>
+
+	<bean id="exampleService" class="com.baeldung.beaninjection.ExampleServiceBean">
+		<constructor-arg index="0" ref="exampleDAO" />
+		<property name="propertyX" value="Some Service Property X"></property>
+		<property name="anotherSampleDAO" ref="anotherSampleDAO"></property>
+	</bean>
+
+</beans>

spring-di/src/main/resources/beans.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xmlns:context="http://www.springframework.org/schema/context"
+	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
+	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
+
+    <context:component-scan base-package="com.baeldung.methodinjections" />
+    
+    <bean id="schoolNotification" class="com.baeldung.methodinjections.SchoolNotification" scope="prototype"/>
+    	        
+    <bean id="studentServices" class="com.baeldung.methodinjections.StudentServices" scope="prototype" >
+    	<lookup-method name="getNotification" bean="schoolNotification"/>
+    </bean>     
+</beans>

spring-di/src/main/resources/classpathxmlapplicationcontext-example.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xmlns:context="http://www.springframework.org/schema/context"
+  xmlns="http://www.springframework.org/schema/beans"
+  xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd   http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
+    <context:annotation-config/>
+
+    <bean id="student" class="com.baeldung.applicationcontext.Student" destroy-method="destroy">
+        <property name="no" value="15"/>
+        <property name="name" value="Tom"/>
+    </bean>
+
+    <bean id="math" class="com.baeldung.applicationcontext.Course">
+        <property name="name" value="math"/>
+    </bean>
+
+    <bean name="teacher" class="com.baeldung.applicationcontext.Teacher"/>
+</beans>

spring-di/src/main/resources/classpathxmlapplicationcontext-internationalization.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xmlns="http://www.springframework.org/schema/beans"
+  xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
+
+    <bean id="messageSource"
+          class="org.springframework.context.support.ResourceBundleMessageSource">
+        <property name="basenames">
+            <list>
+                <value>dialog/dialog</value>
+            </list>
+        </property>
+    </bean>
+</beans>

spring-di/src/main/resources/com.baeldung.di.spring.properties

@@ -0,0 +1 @@
+message.value=Hello World

spring-di/src/main/resources/com.baeldung.di.spring.xml

@@ -0,0 +1,43 @@
+<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-3.0.xsd">
+
+    <bean id="indexService" class="com.baeldung.di.spring.IndexService" />
+    
+    <bean id="messageService" class="com.baeldung.di.spring.MessageService">
+    	<constructor-arg value="${message.value}" />
+    </bean>
+    
+    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
+        <property name="location" value="com.baeldung.di.spring.properties" />
+	</bean>
+	
+	<bean id="messageServiceFromStaticFactory" class="com.baeldung.di.spring.StaticServiceFactory"
+        factory-method="getService">
+    	<constructor-arg value="1" />
+	</bean>
+	
+	<bean id="indexServiceFactory" class="com.baeldung.di.spring.InstanceServiceFactory" />
+	
+	<bean id="messageServiceFromInstanceFactory" class="com.baeldung.di.spring.InstanceServiceFactory"
+        factory-method="getService" factory-bean="indexServiceFactory">
+    	<constructor-arg value="1" />
+	</bean>
+    
+    <bean id="indexApp" class="com.baeldung.di.spring.IndexApp">
+    	<property name="service" ref="indexService" />
+    </bean>
+    
+    <bean id="indexAppWithStaticFactory" class="com.baeldung.di.spring.IndexApp">
+    	<property name="service" ref="messageServiceFromStaticFactory" />
+    </bean>
+    
+    <bean id="indexAppWithFactoryMethod" class="com.baeldung.di.spring.IndexApp">
+    	<property name="service" ref="messageServiceFromInstanceFactory" />
+    </bean>
+    
+    <bean id="messageWorldApp" class="com.baeldung.di.spring.MessageApp">
+    	<constructor-arg ref="messageService" />
+    </bean>
+</beans>

spring-di/src/main/resources/constructordi.xml

@@ -0,0 +1,22 @@
+<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
+    https://www.springframework.org/schema/beans/spring-beans.xsd">
+
+    <bean id="toyota" class="com.baeldung.constructordi.domain.Car">
+        <constructor-arg index="0" ref="engine" />
+        <constructor-arg index="1" ref="transmission" />
+    </bean>
+
+    <bean id="engine"
+        class="com.baeldung.constructordi.domain.Engine">
+        <constructor-arg index="0" value="v4" />
+        <constructor-arg index="1" value="2" />
+    </bean>
+
+    <bean id="transmission"
+        class="com.baeldung.constructordi.domain.Transmission">
+        <constructor-arg value="sliding" />
+    </bean>
+
+</beans>

spring-di/src/main/resources/dependencyinjectiontypes-context.xml

@@ -0,0 +1,23 @@
+<beans xmlns="http://www.springframework.org/schema/beans"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
+	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
+	xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"
+	xmlns:task="http://www.springframework.org/schema/task" xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.2.xsd">
+   
+   <context:annotation-config/>
+
+	<bean id="articleWithSetterInjectionBean"
+		class="com.baeldung.dependencyinjectiontypes.ArticleWithSetterInjection">
+		<constructor-arg ref="textFormatterBean" />
+	</bean>
+	
+	<bean id="articleWithConstructorInjectionBean"
+		class="com.baeldung.dependencyinjectiontypes.ArticleWithConstructorInjection">
+		<constructor-arg ref="textFormatterBean" />
+	</bean>
+	
+	
+	<bean id="textFormatterBean" class="com.baeldung.dependencyinjectiontypes.TextFormatter">
+	</bean>
+	
+</beans>

spring-di/src/main/resources/dialog/dialog_en.properties

@@ -0,0 +1,3 @@
+hello=hello
+you=you
+thanks=thank {0}

spring-di/src/main/resources/dialog/dialog_zh_CN.properties

@@ -0,0 +1,3 @@
+hello=\u4f60\u597d
+you=\u4f60
+thanks=\u8c22\u8c22{0}

spring-di/src/main/resources/factorybean-abstract-spring-ctx.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xmlns="http://www.springframework.org/schema/beans"
+  xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
+
+    <bean id="singleTool" class="com.baeldung.factorybean.SingleToolFactory">
+        <property name="factoryId" value="3001"/>
+        <property name="toolId" value="1"/>
+    </bean>
+
+    <bean id="nonSingleTool" class="com.baeldung.factorybean.NonSingleToolFactory">
+        <property name="factoryId" value="3002"/>
+        <property name="toolId" value="2"/>
+    </bean>
+</beans>

spring-di/src/main/resources/factorybean-spring-ctx.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xmlns="http://www.springframework.org/schema/beans"
+  xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
+
+    <bean id="tool" class="com.baeldung.factorybean.ToolFactory">
+        <property name="factoryId" value="9090"/>
+        <property name="toolId" value="1"/>
+    </bean>
+</beans>

spring-di/src/main/resources/injectiontypes.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xmlns="http://www.springframework.org/schema/beans"
+	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
+
+	<bean name="ftpReader" class="com.baeldung.beaninjection.FtpReader">
+		<constructor-arg value="localhost" />
+		<constructor-arg value="21" />
+	</bean>
+	
+	<bean name="readerService" class="com.baeldung.beaninjection.ReaderService">
+		<property name="ftpReader" ref="ftpReader" />
+	</bean>
+	
+</beans>

spring-di/src/main/resources/logback.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

spring-di/src/main/resources/setterdi.xml

@@ -0,0 +1,24 @@
+<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-3.0.xsd">
+
+    <bean id="toyota" class="com.baeldung.setterdi.domain.Car">
+        <property name="engine" ref="engine" />
+        <property name="transmission" ref="transmission" />
+        <property name="trailer" ref="trailer" />
+    </bean>
+
+    <bean id="engine" class="com.baeldung.setterdi.domain.Engine">
+        <property name="type" value="v4" />
+        <property name="volume" value="2" />
+    </bean>
+
+    <bean id="transmission" class="com.baeldung.setterdi.domain.Transmission">
+        <property name="type" value="sliding" />
+    </bean>
+
+    <bean id="trailer" class="com.baeldung.setterdi.domain.Trailer">
+    </bean>
+
+</beans>

spring-di/src/test/java/com/baeldung/autowired/FieldAutowiredIntegrationTest.java

@@ -0,0 +1,29 @@
+package com.baeldung.autowired;
+
+import com.baeldung.configuration.ApplicationContextTestAutowiredType;
+import com.baeldung.dependency.ArbitraryDependency;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.support.AnnotationConfigContextLoader;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(
+  loader = AnnotationConfigContextLoader.class,
+  classes = ApplicationContextTestAutowiredType.class)
+public class FieldAutowiredIntegrationTest {
+
+    @Autowired
+    private ArbitraryDependency fieldDependency;
+
+    @Test
+    public void givenAutowired_WhenSetOnField_ThenDependencyResolved() {
+        assertNotNull(fieldDependency);
+        assertEquals("Arbitrary Dependency", fieldDependency.toString());
+    }
+}

spring-di/src/test/java/com/baeldung/autowired/FieldAutowiredNameIntegrationTest.java

@@ -0,0 +1,29 @@
+package com.baeldung.autowired;
+
+import com.baeldung.configuration.ApplicationContextTestAutowiredName;
+import com.baeldung.dependency.ArbitraryDependency;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.support.AnnotationConfigContextLoader;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(
+  loader = AnnotationConfigContextLoader.class,
+  classes = ApplicationContextTestAutowiredName.class)
+public class FieldAutowiredNameIntegrationTest {
+
+    @Autowired
+    private ArbitraryDependency autowiredFieldDependency;
+
+    @Test
+    public void givenAutowiredAnnotation_WhenOnField_ThenDependencyValid() {
+        assertNotNull(autowiredFieldDependency);
+        assertEquals("Arbitrary Dependency", autowiredFieldDependency.toString());
+    }
+}

spring-di/src/test/java/com/baeldung/autowired/FieldQualifierAutowiredIntegrationTest.java

@@ -0,0 +1,41 @@
+package com.baeldung.autowired;
+
+import com.baeldung.configuration.ApplicationContextTestAutowiredQualifier;
+import com.baeldung.dependency.ArbitraryDependency;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.support.AnnotationConfigContextLoader;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(
+  loader = AnnotationConfigContextLoader.class,
+  classes = ApplicationContextTestAutowiredQualifier.class)
+public class FieldQualifierAutowiredIntegrationTest {
+
+    @Autowired
+    @Qualifier("autowiredFieldDependency")
+    private ArbitraryDependency fieldDependency1;
+
+    @Autowired
+    @Qualifier("anotherAutowiredFieldDependency")
+    private ArbitraryDependency fieldDependency2;
+
+    @Test
+    public void givenAutowiredQualifier_WhenOnField_ThenDep1Valid() {
+        assertNotNull(fieldDependency1);
+        assertEquals("Arbitrary Dependency", fieldDependency1.toString());
+    }
+
+    @Test
+    public void givenAutowiredQualifier_WhenOnField_ThenDep2Valid() {
+        assertNotNull(fieldDependency2);
+        assertEquals("Another Arbitrary Dependency", fieldDependency2.toString());
+    }
+}

spring-di/src/test/java/com/baeldung/circulardependency/CircularDependencyIntegrationTest.java

@@ -0,0 +1,35 @@
+package com.baeldung.circulardependency;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = { TestConfig.class })
+public class CircularDependencyIntegrationTest {
+
+    @Autowired
+    ApplicationContext context;
+
+    @Bean
+    public CircularDependencyA getCircularDependencyA() {
+        return new CircularDependencyA();
+    }
+
+    @Bean
+    public CircularDependencyB getCircularDependencyB() {
+        return new CircularDependencyB();
+    }
+
+    @Test
+    public void givenCircularDependency_whenSetterInjection_thenItWorks() {
+        final CircularDependencyA circA = context.getBean(CircularDependencyA.class);
+
+        Assert.assertEquals("Hi!", circA.getCircB().getMessage());
+    }
+}

spring-di/src/test/java/com/baeldung/circulardependency/TestConfig.java

@@ -0,0 +1,10 @@
+package com.baeldung.circulardependency;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan(basePackages = { "com.baeldung.circulardependency" })
+public class TestConfig {
+
+}

spring-di/src/test/java/com/baeldung/configuration/ApplicationContextTestAutowiredName.java

@@ -0,0 +1,9 @@
+package com.baeldung.configuration;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan(basePackages = {"com.baeldung.dependency"})
+public class ApplicationContextTestAutowiredName {
+}

spring-di/src/test/java/com/baeldung/configuration/ApplicationContextTestAutowiredQualifier.java

@@ -0,0 +1,24 @@
+package com.baeldung.configuration;
+
+import com.baeldung.dependency.AnotherArbitraryDependency;
+import com.baeldung.dependency.ArbitraryDependency;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ApplicationContextTestAutowiredQualifier {
+
+    @Bean
+    public ArbitraryDependency autowiredFieldDependency() {
+        ArbitraryDependency autowiredFieldDependency = new ArbitraryDependency();
+
+        return autowiredFieldDependency;
+    }
+
+    @Bean
+    public ArbitraryDependency anotherAutowiredFieldDependency() {
+        ArbitraryDependency anotherAutowiredFieldDependency = new AnotherArbitraryDependency();
+
+        return anotherAutowiredFieldDependency;
+    }
+}

spring-di/src/test/java/com/baeldung/configuration/ApplicationContextTestAutowiredType.java

@@ -0,0 +1,15 @@
+package com.baeldung.configuration;
+
+import com.baeldung.dependency.ArbitraryDependency;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ApplicationContextTestAutowiredType {
+
+    @Bean
+    public ArbitraryDependency autowiredFieldDependency() {
+        ArbitraryDependency autowiredFieldDependency = new ArbitraryDependency();
+        return autowiredFieldDependency;
+    }
+}