Bael 2110 (#5286)

* Fix a division method mistake

* What a Spring bean is

* Update

* 2nd update

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

@@ -0,0 +1,16 @@
+package com.baeldung.definition;
+
+import com.baeldung.definition.domain.Address;
+import com.baeldung.definition.domain.Company;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@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/definition/domain/Address.java

@@ -0,0 +1,14 @@
+package com.baeldung.definition.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/definition/domain/Company.java

@@ -0,0 +1,14 @@
+package com.baeldung.definition.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/test/java/com/baeldung/definition/SpringBeanIntegrationTest.java

@@ -0,0 +1,18 @@
+package com.baeldung.definition;
+
+import com.baeldung.definition.domain.Company;
+import org.junit.Test;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+
+import static org.junit.Assert.assertEquals;
+
+public class SpringBeanIntegrationTest {
+    @Test
+    public void whenUsingIoC_thenDependenciesAreInjected() {
+        ApplicationContext context = new AnnotationConfigApplicationContext(Config.class);
+        Company company = context.getBean("company", Company.class);
+        assertEquals("High Street", company.getAddress().getStreet());
+        assertEquals(1000, company.getAddress().getNumber());
+    }
+}