Merge branch 'master' of https://github.com/JonCook/tutorials

spring-core/src/main/java/com/baeldung/Ebook.java

@@ -0,0 +1,20 @@
+package com.baeldung;
+
+public class Ebook {
+
+    private int bookId;
+    private String bookTitle;
+    
+    public int getBookId() {
+        return bookId;
+    }
+    public void setBookId(int bookId) {
+        this.bookId = bookId;
+    }
+    public String getBookTitle() {
+        return bookTitle;
+    }
+    public void setBookTitle(String bookTitle) {
+        this.bookTitle = bookTitle;
+    }
+}

spring-core/src/main/java/com/baeldung/EbookRepository.java

@@ -0,0 +1,5 @@
+package com.baeldung;
+
+public interface EbookRepository {
+    String titleById(int id);
+}

spring-core/src/main/java/com/baeldung/LibraryUtils.java

@@ -0,0 +1,12 @@
+package com.baeldung;
+
+import org.springframework.beans.factory.annotation.Autowired;
+
+public class LibraryUtils {
+    @Autowired
+    private EbookRepository eBookRepository;
+ 
+    public String findBook(int id) {
+        return eBookRepository.titleById(id);
+    }
+}

spring-core/src/main/java/com/baeldung/Member.java

@@ -0,0 +1,20 @@
+package com.baeldung;
+
+public class Member {
+
+    private int memberId;
+    private String memberName;
+    
+    public int getMemberId() {
+        return memberId;
+    }
+    public void setMemberId(int memberId) {
+        this.memberId = memberId;
+    }
+    public String getMemberName() {
+        return memberName;
+    }
+    public void setMemberName(String memberName) {
+        this.memberName = memberName;
+    }
+}

spring-core/src/main/java/com/baeldung/Reservation.java

@@ -0,0 +1,14 @@
+package com.baeldung;
+
+import org.springframework.beans.factory.annotation.Autowired;
+
+public class Reservation {
+    private Member member;
+    private Ebook eBook;
+    
+    @Autowired
+    public Reservation(Member member, Ebook eBook) {
+        this.member = member;
+        this.eBook = eBook;
+    }  
+}

spring-core/src/main/java/com/baeldung/annotation/MyBean.java

@@ -0,0 +1,26 @@
+package com.baeldung.annotation;
+
+import org.springframework.stereotype.Component;
+import javax.annotation.PostConstruct;
+import javax.annotation.PreDestroy;
+
+@Component
+public class MyBean {
+
+    private final TestBean testBean;
+
+    public MyBean(TestBean testBean) {
+        this.testBean = testBean;
+        System.out.println("Hello from constructor");
+    }
+
+    @PostConstruct
+    private void postConstruct() {
+        System.out.println("Hello from @PostConstruct method");
+    }
+
+    @PreDestroy
+    public void preDestroy() {
+        System.out.println("Bean is being destroyed");
+    }
+}

spring-core/src/main/java/com/baeldung/annotation/TestBean.java

@@ -0,0 +1,8 @@
+package com.baeldung.annotation;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class TestBean {
+
+}

spring-core/src/main/java/com/baeldung/applicationcontext/Course.java

@@ -0,0 +1,21 @@
+package com.baeldung.applicationcontext;
+
+public class Course {
+
+    private String name;
+
+    public Course() {
+    }
+
+    public Course(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

spring-core/src/main/java/com/baeldung/applicationcontext/Dialog.java

@@ -0,0 +1,43 @@
+package com.baeldung.applicationcontext;
+
+import java.util.Locale;
+
+public class Dialog {
+
+    private Locale locale;
+    private String hello;
+    private String thanks;
+
+    public Dialog() {
+    }
+
+    public Dialog(Locale locale, String hello, String thanks) {
+        this.locale = locale;
+        this.hello = hello;
+        this.thanks = thanks;
+    }
+
+    public Locale getLocale() {
+        return locale;
+    }
+
+    public void setLocale(Locale locale) {
+        this.locale = locale;
+    }
+
+    public String getHello() {
+        return hello;
+    }
+
+    public void setHello(String hello) {
+        this.hello = hello;
+    }
+
+    public String getThanks() {
+        return thanks;
+    }
+
+    public void setThanks(String thanks) {
+        this.thanks = thanks;
+    }
+}

spring-core/src/main/java/com/baeldung/applicationcontext/Student.java

@@ -0,0 +1,35 @@
+package com.baeldung.applicationcontext;
+
+public class Student {
+
+    private int no;
+    private String name;
+
+    public Student() {
+    }
+
+    public Student(int no, String name) {
+        this.no = no;
+        this.name = name;
+    }
+
+    public int getNo() {
+        return no;
+    }
+
+    public void setNo(int no) {
+        this.no = no;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public void destroy() {
+        System.out.println("Student(no: " + no + ") is destroyed");
+    }
+}

spring-core/src/main/java/com/baeldung/applicationcontext/Teacher.java

@@ -0,0 +1,39 @@
+package com.baeldung.applicationcontext;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.annotation.PostConstruct;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
+
+public class Teacher {
+
+    @Autowired
+    private ApplicationContext context;
+    private List<Course> courses = new ArrayList<>();
+
+    public Teacher() {
+    }
+
+    @PostConstruct
+    public void addCourse() {
+        if (context.containsBean("math")) {
+            Course math = context.getBean("math", Course.class);
+            courses.add(math);
+        }
+        if (context.containsBean("physics")) {
+            Course physics = context.getBean("physics", Course.class);
+            courses.add(physics);
+        }
+    }
+
+    public List<Course> getCourses() {
+        return courses;
+    }
+
+    public void setCourses(List<Course> courses) {
+        this.courses = courses;
+    }
+}

spring-core/src/main/java/com/baeldung/aware/AwareExample.java

@@ -0,0 +1,20 @@
+package com.baeldung.aware;
+
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+
+/**
+ * Created by Gebruiker on 4/24/2018.
+ */
+public class AwareExample {
+
+    public static void main(String[] args) {
+
+        AnnotationConfigApplicationContext context
+                = new AnnotationConfigApplicationContext(Config.class);
+
+        MyBeanName myBeanName = context.getBean(MyBeanName.class);
+
+        MyBeanFactory myBeanFactory = context.getBean(MyBeanFactory.class);
+        myBeanFactory.getMyBeanName();
+    }
+}

spring-core/src/main/java/com/baeldung/aware/Config.java

@@ -0,0 +1,18 @@
+package com.baeldung.aware;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class Config {
+
+    @Bean(name = "myCustomBeanName")
+    public MyBeanName getMyBeanName() {
+        return new MyBeanName();
+    }
+
+    @Bean
+    public MyBeanFactory getMyBeanFactory() {
+        return new MyBeanFactory();
+    }
+}

spring-core/src/main/java/com/baeldung/aware/MyBeanFactory.java

@@ -0,0 +1,24 @@
+package com.baeldung.aware;
+
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.BeanFactory;
+import org.springframework.beans.factory.BeanFactoryAware;
+
+/**
+ * Created by Gebruiker on 4/25/2018.
+ */
+public class MyBeanFactory implements BeanFactoryAware {
+
+    private BeanFactory beanFactory;
+
+    @Override
+    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
+        this.beanFactory = beanFactory;
+    }
+
+    public void getMyBeanName() {
+        MyBeanName myBeanName = beanFactory.getBean(MyBeanName.class);
+        System.out.println(beanFactory.isSingleton("myCustomBeanName"));
+    }
+
+}

spring-core/src/main/java/com/baeldung/aware/MyBeanName.java

@@ -0,0 +1,11 @@
+package com.baeldung.aware;
+
+import org.springframework.beans.factory.BeanNameAware;
+
+public class MyBeanName implements BeanNameAware {
+
+    @Override
+    public void setBeanName(String beanName) {
+        System.out.println(beanName);
+    }
+}

spring-core/src/main/java/com/baeldung/config/scope/AppConfigFunctionBean.java

@@ -0,0 +1,31 @@
+package com.baeldung.config.scope;
+
+import java.util.function.Function;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Scope;
+
+import com.baeldung.scope.prototype.PrototypeBean;
+import com.baeldung.scope.singletone.SingletonFunctionBean;
+
+@Configuration
+public class AppConfigFunctionBean {
+
+    @Bean
+    public Function<String, PrototypeBean> beanFactory() {
+        return name -> prototypeBeanWithParam(name);
+    } 
+
+    @Bean
+    @Scope(value = "prototype")
+    public PrototypeBean prototypeBeanWithParam(String name) {
+       return new PrototypeBean(name);
+    }
+    
+    @Bean
+    public SingletonFunctionBean singletonFunctionBean() {
+        return new SingletonFunctionBean();
+    }
+    
+}

spring-core/src/main/java/com/baeldung/event/listener/ContextEventListener.java

@@ -0,0 +1,24 @@
+package com.baeldung.event.listener;
+
+import org.springframework.context.event.ContextStartedEvent;
+import org.springframework.context.event.ContextStoppedEvent;
+import org.springframework.context.event.EventListener;
+import org.springframework.core.annotation.Order;
+import org.springframework.stereotype.Component;
+
+@Component
+public class ContextEventListener {
+
+    @Order(2)
+    @EventListener
+    public void handleContextRefreshEvent(ContextStartedEvent ctxStartEvt) {
+        System.out.println("Context Start Event received.");
+    }
+
+    @Order(1)
+    @EventListener(classes = { ContextStartedEvent.class, ContextStoppedEvent.class })
+    public void handleMultipleEvents() {
+        System.out.println("Multi-event listener invoked");
+    }
+
+}

spring-core/src/main/java/com/baeldung/event/listener/EventConfig.java

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

spring-core/src/main/java/com/baeldung/event/listener/SpringRunner.java

@@ -0,0 +1,12 @@
+package com.baeldung.event.listener;
+
+import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+
+public class SpringRunner {
+
+    public static void main(String[] args) {
+        ConfigurableApplicationContext ctx = new AnnotationConfigApplicationContext(EventConfig.class);
+        ctx.start();
+    }
+}

spring-core/src/main/java/com/baeldung/lazy/AppConfig.java

@@ -0,0 +1,23 @@
+package com.baeldung.lazy;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Lazy;
+
+@Lazy
+@Configuration
+@ComponentScan(basePackages = "com.baeldung.lazy")
+public class AppConfig {
+
+    @Lazy
+    @Bean
+    public Region getRegion(){
+        return new Region();
+    }
+
+    @Bean
+    public Country getCountry(){
+        return new Country();
+    }
+}

spring-core/src/main/java/com/baeldung/lazy/City.java

@@ -0,0 +1,13 @@
+package com.baeldung.lazy;
+
+import org.springframework.context.annotation.Lazy;
+import org.springframework.stereotype.Component;
+
+@Lazy
+@Component
+public class City {
+
+    public City() {
+        System.out.println("City bean initialized");
+    }
+}

spring-core/src/main/java/com/baeldung/lazy/Country.java

@@ -0,0 +1,8 @@
+package com.baeldung.lazy;
+
+public class Country {
+
+    public Country() {
+        System.out.println("Country bean initialized");
+    }
+}

spring-core/src/main/java/com/baeldung/lazy/Region.java

@@ -0,0 +1,19 @@
+package com.baeldung.lazy;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Lazy;
+
+public class Region {
+
+    @Lazy
+    @Autowired
+    private City city;
+
+    public Region() {
+        System.out.println("Region bean initialized");
+    }
+
+    public City getCityInstance() {
+        return city;
+    }
+}

spring-core/src/main/java/com/baeldung/lombok/ApologizeService.java

@@ -0,0 +1,22 @@
+package com.baeldung.lombok;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+public class ApologizeService {
+
+    private final Translator translator;
+    private final String message;
+
+    @Autowired
+    public ApologizeService(Translator translator) {
+        this(translator, "sorry");
+    }
+
+    public String apologize() {
+        return translator.translate(message);
+    }
+}

spring-core/src/main/java/com/baeldung/lombok/FarewellService.java

@@ -0,0 +1,18 @@
+package com.baeldung.lombok;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class FarewellService {
+
+    private final Translator translator;
+
+    public FarewellService(Translator translator) {
+        this.translator = translator;
+    }
+
+    public String farewell() {
+        return translator.translate("bye");
+    }
+}

spring-core/src/main/java/com/baeldung/lombok/GreetingService.java

@@ -0,0 +1,15 @@
+package com.baeldung.lombok;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class GreetingService {
+
+    @Autowired
+    private Translator translator;
+
+    public String greet() {
+        return translator.translate("hello");
+    }
+}

spring-core/src/main/java/com/baeldung/lombok/ThankingService.java

@@ -0,0 +1,15 @@
+package com.baeldung.lombok;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+public class ThankingService {
+
+    private final Translator translator;
+
+    public String thank() {
+        return translator.translate("thank you");
+    }
+}

spring-core/src/main/java/com/baeldung/lombok/Translator.java

@@ -0,0 +1,5 @@
+package com.baeldung.lombok;
+
+public interface Translator {
+    String translate(String input);
+}

spring-core/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-core/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-core/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-core/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-core/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-core/src/main/java/com/baeldung/scope/AppConfig.java

@@ -0,0 +1,44 @@
+package com.baeldung.scope;
+
+import com.baeldung.scope.prototype.PrototypeBean;
+import com.baeldung.scope.singletone.SingletonAppContextBean;
+import com.baeldung.scope.singletone.SingletonBean;
+import com.baeldung.scope.singletone.SingletonObjectFactoryBean;
+import com.baeldung.scope.singletone.SingletonProviderBean;
+import org.springframework.beans.factory.config.ConfigurableBeanFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Scope;
+
+@Configuration
+@ComponentScan("com.baeldung.scope")
+public class AppConfig {
+
+    @Bean
+    @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
+    public PrototypeBean prototypeBean() {
+        return new PrototypeBean();
+    }
+
+    @Bean
+    public SingletonBean singletonBean() {
+        return new SingletonBean();
+    }
+
+    @Bean
+    public SingletonProviderBean singletonProviderBean() {
+        return new SingletonProviderBean();
+    }
+
+    @Bean
+    public SingletonAppContextBean singletonAppContextBean() {
+        return new SingletonAppContextBean();
+    }
+
+    @Bean
+    public SingletonObjectFactoryBean singletonObjectFactoryBean() {
+        return new SingletonObjectFactoryBean();
+    }
+    
+}

spring-core/src/main/java/com/baeldung/scope/AppProxyScopeConfig.java

@@ -0,0 +1,24 @@
+package com.baeldung.scope;
+
+import com.baeldung.scope.prototype.PrototypeBean;
+import com.baeldung.scope.singletone.SingletonBean;
+
+import org.springframework.beans.factory.config.ConfigurableBeanFactory;
+import org.springframework.context.annotation.*;
+
+@Configuration
+@ComponentScan("com.baeldung.scope")
+public class AppProxyScopeConfig {
+
+    @Bean
+    @Scope(value = ConfigurableBeanFactory.SCOPE_PROTOTYPE, proxyMode = ScopedProxyMode.TARGET_CLASS)
+    public PrototypeBean prototypeBean() {
+        return new PrototypeBean();
+    }
+
+    @Bean
+    public SingletonBean singletonBean() {
+        return new SingletonBean();
+    }
+    
+}

spring-core/src/main/java/com/baeldung/scope/BeanInjectionStarter.java

@@ -0,0 +1,22 @@
+package com.baeldung.scope;
+
+import com.baeldung.scope.prototype.PrototypeBean;
+import com.baeldung.scope.singletone.SingletonBean;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.util.Assert;
+
+public class BeanInjectionStarter {
+
+    public static void main(String[] args) throws InterruptedException {
+
+        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(AppConfig.class);
+        SingletonBean firstSingleton = context.getBean(SingletonBean.class);
+        PrototypeBean firstPrototype = firstSingleton.getPrototypeBean();
+
+        SingletonBean secondSingleton = context.getBean(SingletonBean.class);
+        PrototypeBean secondPrototype = secondSingleton.getPrototypeBean();
+
+        Assert.isTrue(firstPrototype.equals(secondPrototype), "The same instance is returned");
+
+    }
+}

spring-core/src/main/java/com/baeldung/scope/prototype/PrototypeBean.java

@@ -0,0 +1,28 @@
+package com.baeldung.scope.prototype;
+
+import org.apache.log4j.Logger;
+
+public class PrototypeBean {
+
+    private final Logger logger = Logger.getLogger(this.getClass());
+
+    public PrototypeBean() {
+        logger.info("Prototype instance created");
+    }
+    
+    private String name;
+    
+    public PrototypeBean(String name) {
+        this.name = name;
+        logger.info("Prototype instance " + name + " created");
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+    
+}

spring-core/src/main/java/com/baeldung/scope/singletone/SingletonAppContextBean.java

@@ -0,0 +1,20 @@
+package com.baeldung.scope.singletone;
+
+import com.baeldung.scope.prototype.PrototypeBean;
+import org.springframework.beans.BeansException;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
+
+public class SingletonAppContextBean implements ApplicationContextAware {
+
+    private ApplicationContext applicationContext;
+
+    public PrototypeBean getPrototypeBean() {
+        return applicationContext.getBean(PrototypeBean.class);
+    }
+
+    @Override
+    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
+        this.applicationContext = applicationContext;
+    }
+}

spring-core/src/main/java/com/baeldung/scope/singletone/SingletonBean.java

@@ -0,0 +1,24 @@
+package com.baeldung.scope.singletone;
+
+import com.baeldung.scope.prototype.PrototypeBean;
+import org.apache.log4j.Logger;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import java.time.LocalTime;
+
+public class SingletonBean {
+
+    private final Logger logger = Logger.getLogger(this.getClass());
+
+    @Autowired
+    private PrototypeBean prototypeBean;
+
+    public SingletonBean() {
+        logger.info("Singleton instance created");
+    }
+
+    public PrototypeBean getPrototypeBean() {
+        logger.info(String.valueOf(LocalTime.now()));
+        return prototypeBean;
+    }
+}

spring-core/src/main/java/com/baeldung/scope/singletone/SingletonFunctionBean.java

@@ -0,0 +1,19 @@
+package com.baeldung.scope.singletone;
+
+import java.util.function.Function;
+
+import org.springframework.beans.factory.annotation.Autowired;
+
+import com.baeldung.scope.prototype.PrototypeBean;
+
+public class SingletonFunctionBean {
+    
+    @Autowired
+    private Function<String, PrototypeBean> beanFactory;
+    
+    public PrototypeBean getPrototypeInstance(String name) {
+        PrototypeBean bean = beanFactory.apply(name);
+        return bean;
+    }
+
+}

spring-core/src/main/java/com/baeldung/scope/singletone/SingletonLookupBean.java

@@ -0,0 +1,14 @@
+package com.baeldung.scope.singletone;
+
+import com.baeldung.scope.prototype.PrototypeBean;
+import org.springframework.beans.factory.annotation.Lookup;
+import org.springframework.stereotype.Component;
+
+@Component
+public class SingletonLookupBean {
+
+    @Lookup
+    public PrototypeBean getPrototypeBean() {
+        return null;
+    }
+}

spring-core/src/main/java/com/baeldung/scope/singletone/SingletonObjectFactoryBean.java

@@ -0,0 +1,15 @@
+package com.baeldung.scope.singletone;
+
+import com.baeldung.scope.prototype.PrototypeBean;
+import org.springframework.beans.factory.ObjectFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+
+public class SingletonObjectFactoryBean {
+
+    @Autowired
+    private ObjectFactory<PrototypeBean> prototypeBeanObjectFactory;
+
+    public PrototypeBean getPrototypeInstance() {
+        return prototypeBeanObjectFactory.getObject();
+    }
+}

spring-core/src/main/java/com/baeldung/scope/singletone/SingletonProviderBean.java

@@ -0,0 +1,16 @@
+package com.baeldung.scope.singletone;
+
+import com.baeldung.scope.prototype.PrototypeBean;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import javax.inject.Provider;
+
+public class SingletonProviderBean {
+
+    @Autowired
+    private Provider<PrototypeBean> myPrototypeBeanProvider;
+
+    public PrototypeBean getPrototypeInstance() {
+        return myPrototypeBeanProvider.get();
+    }
+}

spring-core/src/main/java/com/baeldung/setterdi/Config.java

@@ -0,0 +1,35 @@
+package com.baeldung.setterdi;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+import com.baeldung.setterdi.domain.Engine;
+import com.baeldung.setterdi.domain.Trailer;
+import com.baeldung.setterdi.domain.Transmission;
+
+@Configuration
+@ComponentScan("com.baeldung.setterdi")
+public class Config {
+
+    @Bean
+    public Engine engine() {
+        Engine engine = new Engine();
+        engine.setType("v8");
+        engine.setVolume(5);
+        return engine;
+    }
+
+    @Bean
+    public Transmission transmission() {
+        Transmission transmission = new Transmission();
+        transmission.setType("sliding");
+        return transmission;
+    }
+
+    @Bean
+    public Trailer trailer() {
+        Trailer trailer = new Trailer();
+        return trailer;
+    }
+}

spring-core/src/main/java/com/baeldung/setterdi/SpringRunner.java

@@ -0,0 +1,33 @@
+package com.baeldung.setterdi;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+import com.baeldung.setterdi.Config;
+import com.baeldung.setterdi.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("setterdi.xml");
+
+        return context.getBean(Car.class);
+    }
+}

spring-core/src/main/java/com/baeldung/setterdi/domain/Car.java

@@ -0,0 +1,34 @@
+package com.baeldung.setterdi.domain;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class Car {
+    private Engine engine;
+    private Transmission transmission;
+    private Trailer trailer;
+
+    public Car() {
+    }
+
+    @Autowired
+    public void setEngine(Engine engine) {
+        this.engine = engine;
+    }
+
+    @Autowired
+    public void setTransmission(Transmission transmission) {
+        this.transmission = transmission;
+    }
+
+    @Autowired
+    public void setTrailer(Trailer trailer) {
+        this.trailer = trailer;
+    }
+
+    @Override
+    public String toString() {
+        return String.format("Engine: %s Transmission: %s Trailer: %s", engine, transmission, trailer);
+    }
+}

spring-core/src/main/java/com/baeldung/setterdi/domain/Engine.java

@@ -0,0 +1,22 @@
+package com.baeldung.setterdi.domain;
+
+public class Engine {
+    private String type;
+    private int volume;
+
+    public Engine() {
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    public void setVolume(int volume) {
+        this.volume = volume;
+    }
+
+    @Override
+    public String toString() {
+        return String.format("%s %d", type, volume);
+    }
+}

spring-core/src/main/java/com/baeldung/setterdi/domain/Trailer.java

@@ -0,0 +1,11 @@
+package com.baeldung.setterdi.domain;
+
+public class Trailer {
+    public Trailer() {
+    }
+
+    @Override
+    public String toString() {
+        return "Trailer";
+    }
+}

spring-core/src/main/java/com/baeldung/setterdi/domain/Transmission.java

@@ -0,0 +1,17 @@
+package com.baeldung.setterdi.domain;
+
+public class Transmission {
+    private String type;
+
+    public Transmission() {
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    @Override
+    public String toString() {
+        return String.format("%s", type);
+    }
+}

spring-core/src/main/java/com/baeldung/springbean/Config.java

@@ -0,0 +1,17 @@
+package com.baeldung.springbean;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+import com.baeldung.springbean.domain.Address;
+import com.baeldung.springbean.domain.Company;
+
+@Configuration
+@ComponentScan(basePackageClasses = Company.class)
+public class Config {
+    @Bean
+    public Address getAddress() {
+        return new Address("High Street", 1000);
+    }
+}

spring-core/src/main/java/com/baeldung/springbean/domain/Address.java

@@ -0,0 +1,14 @@
+package com.baeldung.springbean.domain;
+
+import lombok.Data;
+
+@Data
+public class Address {
+    private String street;
+    private int number;
+
+    public Address(String street, int number) {
+        this.street = street;
+        this.number = number;
+    }
+}

spring-core/src/main/java/com/baeldung/springbean/domain/Company.java

@@ -0,0 +1,14 @@
+package com.baeldung.springbean.domain;
+
+import lombok.Data;
+import org.springframework.stereotype.Component;
+
+@Data
+@Component
+public class Company {
+    private Address address;
+
+    public Company(Address address) {
+        this.address = address;
+    }
+}

spring-core/src/main/java/com/baeldung/streamutils/CopyStream.java

@@ -0,0 +1,22 @@
+package com.baeldung.streamutils;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.StringWriter;
+
+import org.apache.commons.io.IOUtils;
+import org.springframework.util.StreamUtils;
+
+public class CopyStream {
+    public static String getStringFromInputStream(InputStream input) throws IOException {
+        StringWriter writer = new StringWriter();
+        IOUtils.copy(input, writer, "UTF-8");
+        return writer.toString();
+    }
+
+    public InputStream getNonClosingInputStream() throws IOException {
+        InputStream in = new FileInputStream("src/test/resources/input.txt");
+        return StreamUtils.nonClosing(in);
+    }
+}

spring-core/src/main/java/com/baeldung/streamutils/DrainStream.java

@@ -0,0 +1,11 @@
+package com.baeldung.streamutils;
+
+import java.io.InputStream;
+
+import org.springframework.util.StreamUtils;
+
+public class DrainStream {
+    public InputStream getInputStream() {
+        return StreamUtils.emptyInput();
+    }
+}

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

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

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

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

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

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

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

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

spring-core/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-core/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-core/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>