BAEL-2399: Migrate Spring DI example to spring-core module

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

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

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+package com.baeldung.di.spring;
+
+public interface AccountService {
+
+}

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

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

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

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+package com.baeldung.di.spring;
+
+public interface AudioBookService {
+
+}

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

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+package com.baeldung.di.spring;
+
+public class AudioBookServiceImpl implements AudioBookService {
+
+}

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

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+package com.baeldung.di.spring;
+
+public interface AuthorService {
+
+}

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

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+package com.baeldung.di.spring;
+
+public class AuthorServiceImpl implements AuthorService {
+
+}

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

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+package com.baeldung.di.spring;
+
+public interface BookService {
+
+}

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

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

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

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+package com.baeldung.di.spring;
+
+public class Foo {
+}

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

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+package com.baeldung.di.spring;
+
+public class FooProcessor {
+
+	private Foo foo;
+}

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

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+package com.baeldung.di.spring;
+
+public interface PersonDao {
+
+}

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

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

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

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

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

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

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+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;
+	}
+
+}