BAEL-2072 (#4983)

* BAEL-2072

* rename

spring-boot/src/main/java/com/baeldung/componentscan/ExampleBean.java

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

spring-boot/src/main/java/com/baeldung/componentscan/springapp/SpringComponentScanApp.java

@@ -0,0 +1,38 @@
+package com.baeldung.componentscan.springapp;
+
+import org.springframework.context.annotation.FilterType;
+import org.springframework.stereotype.Component;
+
+import com.baeldung.componentscan.ExampleBean;
+import com.baeldung.componentscan.springapp.flowers.Rose;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan
+//@ComponentScan(excludeFilters = @ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, value = Rose.class))
+//@ComponentScan(basePackages = "com.baeldung.componentscan.springapp")
+//@ComponentScan(basePackages = "com.baeldung.componentscan.springapp.animals")
+//@ComponentScan (excludeFilters = @ComponentScan.Filter(type=FilterType.REGEX,pattern="com\\.baeldung\\.componentscan\\.springapp\\.flowers\\..*"))
+public class SpringComponentScanApp {
+
+    private static ApplicationContext applicationContext;
+
+    @Bean
+    public ExampleBean exampleBean() {
+        return new ExampleBean();
+    }
+
+    public static void main(String[] args) {
+        applicationContext = new AnnotationConfigApplicationContext(SpringComponentScanApp.class);
+
+        for (String beanName : applicationContext.getBeanDefinitionNames()) {
+            System.out.println(beanName);
+        }
+    }
+
+}

spring-boot/src/main/java/com/baeldung/componentscan/springapp/animals/Cat.java

@@ -0,0 +1,8 @@
+package com.baeldung.componentscan.springapp.animals;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class Cat {
+
+}

spring-boot/src/main/java/com/baeldung/componentscan/springapp/animals/Dog.java

@@ -0,0 +1,8 @@
+package com.baeldung.componentscan.springapp.animals;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class Dog {
+
+}

spring-boot/src/main/java/com/baeldung/componentscan/springapp/flowers/Rose.java

@@ -0,0 +1,8 @@
+package com.baeldung.componentscan.springapp.flowers;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class Rose {
+
+}

spring-boot/src/main/java/com/baeldung/componentscan/springbootapp/SpringBootComponentScanApp.java

@@ -0,0 +1,37 @@
+package com.baeldung.componentscan.springbootapp;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.context.annotation.FilterType;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+
+import com.baeldung.componentscan.ExampleBean;
+import com.baeldung.componentscan.springbootapp.flowers.Rose;
+
+@SpringBootApplication
+//@ComponentScan(basePackages = "com.baeldung.componentscan.springbootapp.animals")
+//@ComponentScan ( excludeFilters = @ComponentScan.Filter(type=FilterType.REGEX,pattern="com\\.baeldung\\.componentscan\\.springbootapp\\.flowers\\..*"))
+//@ComponentScan(excludeFilters = @ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, value = Rose.class))
+
+public class SpringBootComponentScanApp {
+    private static ApplicationContext applicationContext;
+
+    @Bean
+    public ExampleBean exampleBean() {
+        return new ExampleBean();
+    }
+
+    public static void main(String[] args) {
+        applicationContext = SpringApplication.run(SpringBootComponentScanApp.class, args);
+        checkBeansPresence("cat", "dog", "rose", "exampleBean", "springBootApp");
+
+    }
+
+    private static void checkBeansPresence(String... beans) {
+        for (String beanName : beans) {
+            System.out.println("Is " + beanName + " in ApplicationContext: " + applicationContext.containsBean(beanName));
+        }
+    }
+}

spring-boot/src/main/java/com/baeldung/componentscan/springbootapp/animals/Cat.java

@@ -0,0 +1,8 @@
+package com.baeldung.componentscan.springbootapp.animals;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class Cat {
+
+}

spring-boot/src/main/java/com/baeldung/componentscan/springbootapp/animals/Dog.java

@@ -0,0 +1,8 @@
+package com.baeldung.componentscan.springbootapp.animals;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class Dog {
+
+}

spring-boot/src/main/java/com/baeldung/componentscan/springbootapp/flowers/Rose.java

@@ -0,0 +1,8 @@
+package com.baeldung.componentscan.springbootapp.flowers;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class Rose {
+
+}