diff --git a/spring-web-modules/spring-rest-http/pom.xml b/spring-web-modules/spring-rest-http/pom.xml
index 5a92b585e3..8d3ea82c44 100644
--- a/spring-web-modules/spring-rest-http/pom.xml
+++ b/spring-web-modules/spring-rest-http/pom.xml
@@ -10,9 +10,9 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-boot-2</artifactId>
+        <artifactId>parent-boot-3</artifactId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../parent-boot-2</relativePath>
+        <relativePath>../../parent-boot-3</relativePath>
     </parent>
 
     <dependencies>
@@ -54,11 +54,30 @@
             <artifactId>json-patch</artifactId>
             <version>${jsonpatch.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.httpcomponents.client5</groupId>
+            <artifactId>httpclient5</artifactId>
+            <version>${httpclient5.version}</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <skip>true</skip>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
     <properties>
         <xstream.version>1.4.9</xstream.version>
         <jsonpatch.version>1.12</jsonpatch.version>
+        <httpclient5.version>5.2.1</httpclient5.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/spring-web-modules/spring-rest-http/src/main/java/com/baeldung/responseheaders/controllers/FilterResponseHeaderController.java b/spring-web-modules/spring-rest-http/src/main/java/com/baeldung/responseheaders/controllers/FilterResponseHeaderController.java
index c92d4afafd..7a650a3e05 100644
--- a/spring-web-modules/spring-rest-http/src/main/java/com/baeldung/responseheaders/controllers/FilterResponseHeaderController.java
+++ b/spring-web-modules/spring-rest-http/src/main/java/com/baeldung/responseheaders/controllers/FilterResponseHeaderController.java
@@ -1,22 +1,22 @@
 package com.baeldung.responseheaders.controllers;
 
-import javax.servlet.http.HttpServletResponse;
-
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
+import jakarta.servlet.http.HttpServletResponse;
+
 @RestController
 @RequestMapping("/filter-response-header")
 public class FilterResponseHeaderController {
 
     @GetMapping("/no-extra-header")
-    public String FilterHeaderResponseWithNoExtraHeader() {
+    public String filterHeaderResponseWithNoExtraHeader() {
         return "Response body with Filter header and no extra header";
     }
 
     @GetMapping("/extra-header")
-    public String FilterHeaderResponseWithExtraHeader(HttpServletResponse response) {
+    public String filterHeaderResponseWithExtraHeader(HttpServletResponse response) {
         response.addHeader("Baeldung-Example-Header", "Value-ExtraHeader");
         return "Response body with Filter header and one extra header";
     }
diff --git a/spring-web-modules/spring-rest-http/src/main/java/com/baeldung/responseheaders/controllers/ResponseHeaderController.java b/spring-web-modules/spring-rest-http/src/main/java/com/baeldung/responseheaders/controllers/ResponseHeaderController.java
index d93964b815..dab6467ec7 100644
--- a/spring-web-modules/spring-rest-http/src/main/java/com/baeldung/responseheaders/controllers/ResponseHeaderController.java
+++ b/spring-web-modules/spring-rest-http/src/main/java/com/baeldung/responseheaders/controllers/ResponseHeaderController.java
@@ -4,7 +4,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
-import javax.servlet.http.HttpServletResponse;
+import jakarta.servlet.http.HttpServletResponse;
 
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
diff --git a/spring-web-modules/spring-rest-http/src/main/java/com/baeldung/responseheaders/filter/AddResponseHeaderFilter.java b/spring-web-modules/spring-rest-http/src/main/java/com/baeldung/responseheaders/filter/AddResponseHeaderFilter.java
index 7d4ffb1391..7820f6c650 100644
--- a/spring-web-modules/spring-rest-http/src/main/java/com/baeldung/responseheaders/filter/AddResponseHeaderFilter.java
+++ b/spring-web-modules/spring-rest-http/src/main/java/com/baeldung/responseheaders/filter/AddResponseHeaderFilter.java
@@ -2,18 +2,18 @@ package com.baeldung.responseheaders.filter;
 
 import java.io.IOException;
 
-import javax.servlet.Filter;
-import javax.servlet.FilterChain;
-import javax.servlet.FilterConfig;
-import javax.servlet.ServletException;
-import javax.servlet.ServletRequest;
-import javax.servlet.ServletResponse;
-import javax.servlet.annotation.WebFilter;
-import javax.servlet.http.HttpServletResponse;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import jakarta.servlet.Filter;
+import jakarta.servlet.FilterChain;
+import jakarta.servlet.FilterConfig;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.ServletRequest;
+import jakarta.servlet.ServletResponse;
+import jakarta.servlet.annotation.WebFilter;
+import jakarta.servlet.http.HttpServletResponse;
+
 @WebFilter("/filter-response-header/*")
 public class AddResponseHeaderFilter implements Filter {
 
diff --git a/spring-web-modules/spring-rest-http/src/main/java/com/baeldung/web/controller/customer/CustomerRestController.java b/spring-web-modules/spring-rest-http/src/main/java/com/baeldung/web/controller/customer/CustomerRestController.java
index edae10de27..061c5eb3e4 100644
--- a/spring-web-modules/spring-rest-http/src/main/java/com/baeldung/web/controller/customer/CustomerRestController.java
+++ b/spring-web-modules/spring-rest-http/src/main/java/com/baeldung/web/controller/customer/CustomerRestController.java
@@ -23,8 +23,6 @@ import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
 
 import java.net.URI;
 
-import javax.validation.Valid;
-
 @RestController
 @RequestMapping(value = "/customers")
 public class CustomerRestController {
@@ -40,25 +38,28 @@ public class CustomerRestController {
     public ResponseEntity<Customer> createCustomer(@RequestBody Customer customer) {
         Customer customerCreated = customerService.createCustomer(customer);
         URI location = ServletUriComponentsBuilder.fromCurrentRequest()
-                                                  .path("/{id}")
-                                                  .buildAndExpand(customerCreated.getId())
-                                                  .toUri();
-        return ResponseEntity.created(location).build();
+            .path("/{id}")
+            .buildAndExpand(customerCreated.getId())
+            .toUri();
+        return ResponseEntity.created(location)
+            .build();
     }
 
     @PatchMapping(path = "/{id}", consumes = "application/json-patch+json")
-    public ResponseEntity<Customer> updateCustomer(@PathVariable String id,
-                                                   @RequestBody JsonPatch patch) {
+    public ResponseEntity<Customer> updateCustomer(@PathVariable String id, @RequestBody JsonPatch patch) {
         try {
-            Customer customer = customerService.findCustomer(id).orElseThrow(CustomerNotFoundException::new);
+            Customer customer = customerService.findCustomer(id)
+                .orElseThrow(CustomerNotFoundException::new);
             Customer customerPatched = applyPatchToCustomer(patch, customer);
             customerService.updateCustomer(customerPatched);
 
             return ResponseEntity.ok(customerPatched);
         } catch (CustomerNotFoundException e) {
-            return ResponseEntity.status(HttpStatus.NOT_FOUND).build();
+            return ResponseEntity.status(HttpStatus.NOT_FOUND)
+                .build();
         } catch (JsonPatchException | JsonProcessingException e) {
-            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).build();
+            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR)
+                .build();
         }
     }