Master Java Web Services: Restful API (JAX RS)

Download and install the jdk development kit for development by choosing the current version and appropriate flavor, and follow a standard Windows setup with license acceptance.

Download Eclipse IDE from eclipse.org, choose Windows 64 bit Eclipse IDE for Java developers, install via the installer or packages, extract the zip, launch Eclipse, and set up a workspace.

Set up a jersey jax-rs web service project with maven, create a simple web app archetype, and configure dependencies, eclipse, and tomcat for running the server.

See how a Jersey archetype creates a rest api web application, handles get requests via a mapped path, and configures Jersey containers to return plain text responses.

Begin a simple restful api project and learn to fix warnings by updating maven pom dependencies, updating the eclipse project, and ensuring the application runs with the correct libraries.

Develop a first restful api with jax-rs by building a showroom resource, defining a get request to /showroom/getblanks that returns a string.

Learn how to handle post requests in a JAX-RS RESTful API, configure resources, and test with Postman, including base URL deployment, post mapping, and request handling.

Explore resource-based URIs for CRUD in restful services with JAX-RS, using get, post, put, and delete operations, path parameters, and handling brand IDs in URLs.

Explore path parameters in jax-rs, using brand name and brand id as examples. See how non-numeric inputs and extra parameters crash the API and how postman tests verify handling.

Redeem a JetBrains coupon to unlock six months of free ultimate features for IntelliJ IDEA, by logging in, applying the discount at checkout, and accessing tools like PyCharm and PhpStorm.

Master Java web services and REST API with JAX-RS through a comprehensive full stack Java developer course, offered with a subscription that unlocks current and future content.

Install and configure MySQL on Windows by downloading the MySQL community installer, choosing online or offline setup, and creating a strong admin password.

Create a showroom schema and brands table in MySQL Workbench with id and brand name, insert sample data like BMW, and prepare for Hibernate-based RESTful API later.

Develop the service layer to fetch a list of brands from the database and return it. Create a brand entity and DAO to enable posting new brands via Hibernate.

Service layer continues by wiring update and delete operations, changing return types to void, and preparing to integrate Hibernate to perform database operations in a JAX-RS based REST API.

Integrate hibernate into a Maven application by adding hibernate and MySQL dependencies, configuring the hibernate configuration file, and wiring a MySQL database connection with the driver, dialect, and schema.

Create a DAO layer using Hibernate to interact with the database by modeling entity classes, configuring a session factory, and annotating classes for ORM, enabling a RESTful API.

Implement the dao layer with Hibernate by creating a session, starting a transaction, and performing create, read, update, and delete via entity mappings and Hibernate query language.

Demonstrates creating and testing xml responses for a rest api using JAX RS, Jersey, and Hibernate, including configuring media type and model elements for list and item responses.

Demonstrates building a restful api with JAX-RS by enabling json request and response using the application/json media type, and performing create, read, update, and delete operations.

Leverage LinkedIn to connect with industry professionals, showcase your GitHub projects, and seek recommendations and endorsements to advance your career.

Set up a sub-resource table for products with product_id as primary key and brand_id as a foreign key, and add cost and sample data (Honda, Suzuki) to illustrate structure.

Add a sub-resource on an existing resource to retrieve products by brand, wiring a product service to return a brand-specific product list in a restful API.

Explore implementing a sub-resource on an existing product resource using Hibernate, focusing on many-to-one relationships with brands, foreign keys, and session-based transaction flow.

Explore many-to-one mappings in Hibernate by modeling a product with a brand, using join column and entity associations to fetch brand data alongside products.

Explore delegating calls to a sub-resource object in a java rest api built with jax-rs, routing product requests through a source object to fetch a subset of products.

Implement a category-based filter to fetch products by brand and category using a query parameter. Validate bike and car results, prevent null pointer errors, and note pagination as a follow-up.

implement pagination for the product list api using start and size query parameters to return a sublist, with validation and default handling, tested via postman, including category-based filtering.

Demonstrate reading header values using HeaderParam and cookie values using CookieParam in a JAX-RS resource, with a GET endpoint producing text/plain and tested via Postman.

Explore how to use context param in jax-rs to access http headers and cookies, read header values, and leverage servlet context and request metadata.

Develop and test REST API endpoints by creating resources with HTTP status codes, returning JSON payloads via Postman, and using JAX-RS response types to indicate creation.

Learn to implement location headers in a restful api to return the url of a newly created resource, with auto-generated ids via identity strategy, tested using postman.

Learn to implement a specific entity retrieval in a JAX-RS restful API, including brand entity handling, DAO data access, service logic, and building proper responses with location headers.

Learn to set the Location header for a newly created resource and build the absolute URI by appending the resource ID to the base path.

Study how to manage exceptions in a RESTful JAX RS app by using WebApplicationException, handling missing headers with a custom message, and returning a proper JSON response with a status.

Explore how to craft robust JSON responses for exceptions in Java web services, including building a simple payload, returning appropriate HTTP status codes, and using application/json media types with JAX-RS.

Implement an exception mapper to map the exception to a different class and return a web application exception response with status 500 and a payload.

Create a custom not found exception and its exception mapper in a JAX-RS project to map errors to HTTP status and payload.

Learn to implement hateoas by enriching API responses with navigational links, including a self link added to the brand resource, using a Link model and absolute paths.

Explore implementing HATEOAS with multiple links, adding a self link and a products link, building a list of links, and generating absolute paths for REST resources.

Master hateoas in JAX RS by generating self and subresource links from class and method level resources, using base uri and templates to build robust restful api navigation.

Explore the discussion forum and commenting system to ask questions and clarify concepts, and connect via Udemy and Teachable forums or a Facebook group for course-related help.

Explore an alternate restful API setup with JAX-RS by cloning an app, configuring a custom application class, adding annotations, and running a server to serve /checksRS/nice.

Explore message body readers and writers in restful Java web services. They enable reading and writing data in formats like JSON so diverse clients and servers can communicate.

Implement a custom message body writer for the name class in a Java JAX-RS Restful API, producing text/plain by converting name to string and writing to the response stream.

Explore resource types in jax rs by contrasting per-request objects with singleton resources, showing how @Singleton preserves state across requests and memory, enabling persistent values.

Explore how query param and path param bind values, compare method parameter injection with class-level variables, and explain why class-level injections crash with singleton setups.

Learn to build custom param converters in JAX RS, converting query or path parameters into domain objects like a currency object from a code.

Implement a currency param converter in a JAX-RS REST API by creating CurrencyParamConverter and a provider, converting between currency objects and strings via a code-based switch, enabling automatic binding.

Implement a currency param converter provider using an anonymous (nameless) object to embed business logic. Learn to override converter methods, adapt raw types, and use toString for readable output.

Access and use the project files provided for each section, including downloadable notebooks and code, to debug your programs and learn from the examples.

Create a simple Java client to call a restful API, using a client builder and get requests, run and test against a deployed API on Tomcat, and display the response.

Learn client building steps in a Java RESTful API service, handling GET requests, converting responses between POJO and string, and controlling accepted media types like application/json.

Post a new resource to the database via a RESTful API using a client, sending JSON with application/json and verifying the new entry.

Learn to read responses from a restful api, convert them to strings or objects, and use a wrapper class to model a brand with id and name in jax-rs.

Build a hateoas model by adding a links field to resources and creating a link class with a rel representing relationship, enabling self and related links in responses.

Expand java web services and restful api with jax-rs, while the course now introduces ai topics like machine learning and deep learning, inviting feedback to improve future offerings.

Learn how OAuth 2.0 enables third-party sign-in via Google, demonstrating the authorization code flow to exchange for a token and access Google APIs.

Set up a new Maven web app, configure Google sign-in credentials (client ID and secret) and consent screen, and prepare the project with Java 1.8 on Eclipse and Tomcat.

Master Java web services guides implementing Google login with the consent screen, configuring a client ID and redirect URI to obtain an authorization code and token in a RESTful app.

Learn to obtain an authorization code from Google, post it to the Google token server via a RESTful API, and receive an access token with expiry and scope.

Learn to access Google user data by implementing the consent screen, exchanging the code for a token, and calling the Google user info API with the access token.

Receive the Google server response containing ID, email, verified email, and picture, populate a user model, and display the email and picture in a GSP view.

Organize large Java web apps with Spring and Spring Boot while mastering basics like lambda expressions, multithreading, and generics; compare microservices, RESTful APIs with JAX-RS, SOAP, Hibernate, and Angular/TypeScript.

Rate this course with a five star rating to boost morale and support better content. Share your feedback and reviews to help us improve the course.

Learn how to navigate a first job interview with confidence: present a calm, capable, trainable candidate; discuss projects, internships, and a strong CV; ask questions and manage expectations.

Celebrate your completion of the course, share your achievement on LinkedIn with the course link, and stay engaged by exploring more courses.