diff --git a/pom.xml b/pom.xml
index 932b7d7..5cd8cab 100644
--- a/pom.xml
+++ b/pom.xml
@@ -24,19 +24,13 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-web</artifactId>
 			<!-- Exclude tomcat -->
-			<!-- <exclusions>
-				<exclusion>
-					<groupId>org.springframework.boot</groupId>
-					<artifactId>spring-boot-starter-tomcat</artifactId>
-				</exclusion>
-			</exclusions> -->
+			<!-- <exclusions> <exclusion> <groupId>org.springframework.boot</groupId> 
+				<artifactId>spring-boot-starter-tomcat</artifactId> </exclusion> </exclusions> -->
 		</dependency>
-		
-		<!--  Unblock to enable jetty server -->
-		<!-- <dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-jetty</artifactId>
-		</dependency> -->
+
+		<!-- Unblock to enable jetty server -->
+		<!-- <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jetty</artifactId> 
+			</dependency> -->
 
 		<dependency>
 			<groupId>org.projectlombok</groupId>
@@ -54,6 +48,15 @@
 				</exclusion>
 			</exclusions>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-thymeleaf</artifactId>
+		</dependency>
 	</dependencies>
 
 	<build>
@@ -65,4 +68,18 @@
 		</plugins>
 	</build>
 
+	<!-- <profiles>
+		<profile>
+			<id>profile1</id>
+			<properties>
+				<spring.boot.mainclass>com.javaprogram.springbootapp.SpringBootAppApplication</spring.boot.mainclass>
+			</properties>
+		</profile>
+		<profile>
+			<id>profile2</id>
+			<properties>
+				<spring.boot.mainclass>com.javaprogram.custom.errors.CustomErrorApplication</spring.boot.mainclass>
+			</properties>
+		</profile>
+	</profiles> -->
 </project>
diff --git a/src/main/java/com/javaprogram/api/RequestHeadersAPI.java b/src/main/java/com/javaprogram/api/RequestHeadersAPI.java
index 4e5977a..434c3a7 100644
--- a/src/main/java/com/javaprogram/api/RequestHeadersAPI.java
+++ b/src/main/java/com/javaprogram/api/RequestHeadersAPI.java
@@ -17,7 +17,7 @@
 import org.springframework.web.bind.annotation.RestController;
 
 @RestController
-@RequestMapping("request/headers")
+@RequestMapping("headers")
 public class RequestHeadersAPI {
 	Logger logger = LoggerFactory.getLogger(RequestHeadersAPI.class);
 
diff --git a/src/main/java/com/javaprogram/auto/configurations/AutoConfigureApplication.java b/src/main/java/com/javaprogram/auto/configurations/AutoConfigureApplication.java
new file mode 100644
index 0000000..4f537f3
--- /dev/null
+++ b/src/main/java/com/javaprogram/auto/configurations/AutoConfigureApplication.java
@@ -0,0 +1,57 @@
+package com.javaprogram.auto.configurations;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.jms.JmsAutoConfiguration;
+import org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.PostMapping;
+
+@EnableAutoConfiguration(exclude = SecurityAutoConfiguration.class, excludeName = "SecurityAutoConfiguration")
+public class AutoConfigureApplication {
+
+	@Bean
+	public Message getMessage() {
+		return new Message();
+	}
+
+	@Bean
+	public MessageController getMessageController() {
+		return new MessageController();
+	}
+
+	public static void main(String[] args) {
+		SpringApplication.run(AutoConfigureApplication.class, args);
+
+	}
+
+}
+
+class Message {
+
+	public String getMessage() {
+		return "New message generated";
+	}
+
+}
+
+@Controller
+class MessageController {
+	Logger logger = LoggerFactory.getLogger(getClass());
+
+	@Autowired
+	private Message msg;
+
+	@PostMapping("/send")
+	public void messageSender() {
+
+		String messag = msg.getMessage();
+		logger.info("Message : " + messag);
+		logger.info("Message sent....");
+
+	}
+}
\ No newline at end of file
diff --git a/src/main/java/com/javaprogram/config/EmbedServerCustomConfigration.java b/src/main/java/com/javaprogram/config/EmbedServerCustomConfigration.java
new file mode 100644
index 0000000..998b447
--- /dev/null
+++ b/src/main/java/com/javaprogram/config/EmbedServerCustomConfigration.java
@@ -0,0 +1,21 @@
+package com.javaprogram.config;
+
+import org.springframework.boot.web.server.WebServerFactoryCustomizer;
+import org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory;
+import org.springframework.stereotype.Component;
+
+//@Component
+public class EmbedServerCustomConfigration implements WebServerFactoryCustomizer<ConfigurableServletWebServerFactory> {
+
+	@Override
+	public void customize(ConfigurableServletWebServerFactory factory) {
+
+		factory.setPort(9009);
+		factory.setDisplayName("JavaProgramTo.com");
+		factory.setServerHeader("Server header");
+
+		factory.setContextPath("/api/v3");
+
+	}
+
+}
diff --git a/src/main/java/com/javaprogram/config/SetBasePath.java b/src/main/java/com/javaprogram/config/SetBasePath.java
new file mode 100644
index 0000000..9af080b
--- /dev/null
+++ b/src/main/java/com/javaprogram/config/SetBasePath.java
@@ -0,0 +1,23 @@
+package com.javaprogram.config;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.web.server.WebServerFactoryCustomizer;
+import org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory;
+import org.springframework.stereotype.Component;
+
+// now this is disabled. To enable, just uncomment @Bean annotation.
+@Component
+public class SetBasePath {
+
+	private Logger logger = LoggerFactory.getLogger(getClass());
+
+	// @Bean
+	public WebServerFactoryCustomizer<ConfigurableServletWebServerFactory> webServerFactoryCustomizer() {
+		WebServerFactoryCustomizer<ConfigurableServletWebServerFactory> customizer = factory -> factory
+				.setContextPath("/api/v2");
+
+		logger.info("Setting up the custom base path ");
+		return customizer;
+	}
+}
diff --git a/src/main/java/com/javaprogram/config/TomcatEmbedServerCustomConfigration.java b/src/main/java/com/javaprogram/config/TomcatEmbedServerCustomConfigration.java
new file mode 100644
index 0000000..94e6e4a
--- /dev/null
+++ b/src/main/java/com/javaprogram/config/TomcatEmbedServerCustomConfigration.java
@@ -0,0 +1,25 @@
+package com.javaprogram.config;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
+import org.springframework.boot.web.server.WebServerFactoryCustomizer;
+import org.springframework.stereotype.Component;
+
+//@Component
+public class TomcatEmbedServerCustomConfigration implements WebServerFactoryCustomizer<TomcatServletWebServerFactory> {
+
+	private Logger logger = LoggerFactory.getLogger(getClass());
+
+	@Override
+	public void customize(TomcatServletWebServerFactory factory) {
+		logger.info("Setting the Tomcat specific configurations. started");
+		factory.setPort(9009);
+		factory.setDisplayName("JavaProgramTo.com");
+		factory.setServerHeader("Server header of tomcat");
+
+		factory.setContextPath("/api/v4");
+		logger.info("Setting the Tomcat specific configurations. ended");
+	}
+
+}
diff --git a/src/main/java/com/javaprogram/custom/errors/CustomErrorApplication.java b/src/main/java/com/javaprogram/custom/errors/CustomErrorApplication.java
new file mode 100644
index 0000000..65d2ed7
--- /dev/null
+++ b/src/main/java/com/javaprogram/custom/errors/CustomErrorApplication.java
@@ -0,0 +1,23 @@
+package com.javaprogram.custom.errors;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration;
+
+import com.javaprogram.springbootapp.SpringBootAppApplication;
+
+@SpringBootApplication(scanBasePackages = "com.javaprogram.custom.errors")
+@EnableAutoConfiguration(exclude = {ErrorMvcAutoConfiguration.class})
+public class CustomErrorApplication {
+
+	private static Logger logger = LoggerFactory.getLogger(CustomErrorApplication.class);
+
+	public static void main(String[] args) {
+		logger.info("Container started.....");
+		SpringApplication.run(SpringBootAppApplication.class, args);
+	}
+
+}
diff --git a/src/main/java/com/javaprogram/custom/errors/api/CustomErrorController.java b/src/main/java/com/javaprogram/custom/errors/api/CustomErrorController.java
new file mode 100644
index 0000000..0163465
--- /dev/null
+++ b/src/main/java/com/javaprogram/custom/errors/api/CustomErrorController.java
@@ -0,0 +1,58 @@
+package com.javaprogram.custom.errors.api;
+
+import javax.servlet.RequestDispatcher;
+import javax.servlet.http.HttpServletRequest;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.web.servlet.error.ErrorController;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestHeader;
+
+import com.javaprogram.api.RequestHeadersAPI;
+
+@Controller
+public class CustomErrorController implements ErrorController {
+
+	Logger logger = LoggerFactory.getLogger(RequestHeadersAPI.class);
+
+	@GetMapping("/custom/error")
+	public String getCustomError(@RequestHeader(name = "code") String errorCode) {
+
+		logger.info("error code : " + errorCode);
+		if ("400".equals(errorCode)) {
+			return "400";
+		} else if ("404".equals(errorCode)) {
+			return "404";
+		}
+
+		return "error";
+	}
+
+	@GetMapping(value = "/custom/errors")
+	public String handleError(HttpServletRequest request) {
+
+		Object status = request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE);
+
+		if (status != null) {
+
+			Integer statusCode = Integer.valueOf(status.toString());
+
+			if (statusCode == HttpStatus.NOT_FOUND.value()) {
+				return "404";
+			} else if (statusCode == HttpStatus.INTERNAL_SERVER_ERROR.value()) {
+				return "500";
+			}
+		}
+		return "error";
+	}
+
+	@Override
+	public String getErrorPath() {
+		logger.info("setting up the path for error pages.");
+		return "/error";
+	}
+
+}
diff --git a/src/main/java/com/javaprogram/custom/errors/api/DefaultErrorsAPI.java b/src/main/java/com/javaprogram/custom/errors/api/DefaultErrorsAPI.java
new file mode 100644
index 0000000..ef723b9
--- /dev/null
+++ b/src/main/java/com/javaprogram/custom/errors/api/DefaultErrorsAPI.java
@@ -0,0 +1,22 @@
+package com.javaprogram.custom.errors.api;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestHeader;
+
+import com.javaprogram.api.RequestHeadersAPI;
+
+@Controller
+public class DefaultErrorsAPI {
+
+	Logger logger = LoggerFactory.getLogger(RequestHeadersAPI.class);
+
+	@GetMapping("/error")
+	public String getDefaultPage(@RequestHeader(name = "errorcode") String errorCode) {
+		logger.info("error code : " + errorCode);
+		return "error";
+	}
+
+}
diff --git a/src/main/java/com/javaprogram/springbootapp/SpringBootAppApplication.java b/src/main/java/com/javaprogram/springbootapp/SpringBootAppApplication.java
index ed9c8be..cbcf7a5 100644
--- a/src/main/java/com/javaprogram/springbootapp/SpringBootAppApplication.java
+++ b/src/main/java/com/javaprogram/springbootapp/SpringBootAppApplication.java
@@ -1,5 +1,7 @@
 package com.javaprogram.springbootapp;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.context.annotation.ComponentScan;
@@ -8,6 +10,8 @@
 @SpringBootApplication
 public class SpringBootAppApplication {
 
+	private Logger logger = LoggerFactory.getLogger(getClass());
+
 	public static void main(String[] args) {
 		SpringApplication.run(SpringBootAppApplication.class, args);
 	}
@@ -28,4 +32,5 @@ public static void main(String[] args) {
 //	  factory.setPort(9000); factory.setContextPath("/myapp");
 //	  factory.addErrorPages(new ErrorPage(HttpStatus.NOT_FOUND, "/notfound.html"));
 //	  return factory; }
+
 }
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
index fdf9fe9..e38d828 100644
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -43,3 +43,9 @@
 ## Number of selector threads to use. When the value is -1.
 #server.jetty.selectors=2 
 #
+
+server.servlet.context-path=/api/v1
+#spring.data.rest.basePath=/api/v1
+
+#server.error.whitelabel.enabled=false
+#spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration
diff --git a/src/main/resources/templates/400.html b/src/main/resources/templates/400.html
new file mode 100644
index 0000000..f1c00d3
--- /dev/null
+++ b/src/main/resources/templates/400.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<body>
+	<h1>Sorry, Unexpected high volume.</h1>
+
+	<h2>Please give try after sometime.</h2>
+	<p>
+		<a href="/">Go Home</a>
+	</p>
+</body>
+</html>
\ No newline at end of file
diff --git a/src/main/resources/templates/404.html b/src/main/resources/templates/404.html
new file mode 100644
index 0000000..d0359e0
--- /dev/null
+++ b/src/main/resources/templates/404.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html>
+<body>
+	<h1>You are looking for a page is not found</h1>
+	<p>
+		<a href="/">Go Home</a>
+	</p>
+</body>
+</html>
\ No newline at end of file
diff --git a/src/main/resources/templates/error.html b/src/main/resources/templates/error.html
new file mode 100644
index 0000000..105041b
--- /dev/null
+++ b/src/main/resources/templates/error.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html>
+<body>
+	<div class="cover">
+		<h1>Maintenance is in progress</h1>
+		<h2>Our Support team is working on it.</h2>
+		<p>
+			<a href="/">Please visit soon.</a>
+		</p>
+	</div>
+</body>
+</html>
diff --git a/src/main/resources/templates/index.html b/src/main/resources/templates/index.html
new file mode 100644
index 0000000..95c68c8
--- /dev/null
+++ b/src/main/resources/templates/index.html
@@ -0,0 +1,6 @@
+<html>
+<body>
+<h1>Welcome Home</h1>
+<p><strong>Success!</strong> It is working as we expected.</p>
+</body>
+</html>
diff --git a/src/main/resources/templates/send.html b/src/main/resources/templates/send.html
new file mode 100644
index 0000000..cbc300c
--- /dev/null
+++ b/src/main/resources/templates/send.html
@@ -0,0 +1,10 @@
+<!DOCTYPE>
+<html xmlns="http://www.w3.org/1999/xhtml"
+	xmlns:th="http://www.thymeleaf.org"
+	xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3"
+	xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
+<html>
+<body>
+	<h1>Message has been sent to subscriber.</h1>
+</body>
+</html>