BeanNameAware interface and implementation

Author: JavaEEPRO

src/main/java/si/inspirited/Main.java

@@ -8,5 +8,6 @@ public static void main(String[] args) {
         BeanFactory beanFactory = new BeanFactory();
         beanFactory.instantiate("main.java.si.inspirited");
         beanFactory.populateProperties();
+        beanFactory.injectBeanNames();
     }
 }

src/main/java/si/inspirited/PromotionsService.java

@@ -1,8 +1,19 @@
 package main.java.si.inspirited;
 
+import org.springframework.beans.factory.BeanNameAware;
 import org.springframework.beans.factory.stereotype.Component;
 
 @Component
-public class PromotionsService {
+public class PromotionsService implements BeanNameAware {
 
+    String beanName;
+
+    @Override
+    public void setBeanName(String name) {
+        this.beanName = name;
+    }
+
+    public String getBeanName() {
+        return this.beanName;
+    }
 }

src/org/springframework/beans/factory/BeanFactory.java

@@ -4,9 +4,11 @@
 import org.springframework.beans.factory.stereotype.Component;
 
 import java.io.File;
+import java.io.IOException;
 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
+import java.net.URISyntaxException;
 import java.net.URL;
 import java.util.Enumeration;
 import java.util.HashMap;
@@ -46,7 +48,7 @@ public void instantiate(String basePackage) {
                     }
                 }
             }
-        }catch (Exception e) {e.printStackTrace();}
+        }catch (NoSuchMethodException | ClassNotFoundException | IOException | InstantiationException | IllegalAccessException | InvocationTargetException | URISyntaxException e) {e.printStackTrace();}
         System.out.println(singletons);
     }
 
@@ -70,4 +72,13 @@ public void populateProperties(){
             }
         }
     }
+
+    public void injectBeanNames(){
+        for (String name : singletons.keySet()) {
+            Object bean = singletons.get(name);
+            if(bean instanceof BeanNameAware){
+                ((BeanNameAware) bean).setBeanName(name);
+            }
+        }
+    }
 }

src/org/springframework/beans/factory/BeanNameAware.java

@@ -0,0 +1,6 @@
+package org.springframework.beans.factory;
+
+public interface BeanNameAware {
+
+    void setBeanName(String name);
+}