work on a cleanup bean

spring-all/pom.xml

@@ -7,6 +7,12 @@
     <name>spring-all</name>
     <packaging>war</packaging>
 
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>1.2.5.RELEASE</version>
+    </parent>
+
     <dependencies>
 
         <!-- Spring -->
@@ -101,6 +107,27 @@
             <artifactId>guava</artifactId>
             <version>${guava.version}</version>
         </dependency>
+        
+        <!-- logging -->
+
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <!-- <scope>runtime</scope> -->
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>jcl-over-slf4j</artifactId>
+            <!-- <scope>runtime</scope> --> <!-- some spring dependencies need to compile against jcl -->
+        </dependency>
+        <dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
+            <groupId>org.slf4j</groupId>
+            <artifactId>log4j-over-slf4j</artifactId>
+        </dependency>
 
         <!-- test scoped -->
 

spring-all/src/main/java/org/baeldung/spring/config/CleanupBean.java

@@ -0,0 +1,26 @@
+package org.baeldung.spring.config;
+
+import java.util.concurrent.ExecutorService;
+
+import org.springframework.beans.factory.DisposableBean;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public final class CleanupBean implements DisposableBean {
+
+    @Autowired
+    private ExecutorService setupExecutor;
+
+    public CleanupBean() {
+        super();
+    }
+
+    //
+
+    @Override
+    public void destroy() {
+        setupExecutor.shutdownNow();
+    }
+
+}

spring-all/src/main/java/org/baeldung/spring/config/CoreConfig.java

@@ -1,5 +1,11 @@
 package org.baeldung.spring.config;
 
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+
+import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
@@ -12,4 +18,15 @@ public class CoreConfig extends WebMvcConfigurerAdapter {
         super();
     }
 
+    // beans
+
+    @Bean
+    public ExecutorService setupExecutor() {
+        final int coreThreads = 4;
+        final int maxThreads = 8;
+        final ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(coreThreads, maxThreads, 60L, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>());
+        threadPoolExecutor.allowCoreThreadTimeOut(true);
+        return threadPoolExecutor;
+    }
+
 }

spring-security-rest-full/pom.xml

@@ -7,6 +7,12 @@
     <name>spring-security-rest-full</name>
     <packaging>war</packaging>
 
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>1.2.5.RELEASE</version>
+    </parent>
+
     <dependencies>
 
         <!-- Spring Boot Dependencies -->
@@ -454,10 +460,4 @@
 
     </properties>
 
-    <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>1.2.4.RELEASE</version>
-    </parent>
-
 </project>