Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Save more on your purchases now! discount-offer-chevron-icon
Savings automatically calculated. No voucher code required.
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Java EE 8 Design Patterns and Best Practices
Java EE 8 Design Patterns and Best Practices

Java EE 8 Design Patterns and Best Practices: Build enterprise-ready scalable applications with architectural design patterns

Arrow left icon
Profile Icon Rocha Profile Icon Alberto Simoes Profile Icon Purificação
Arrow right icon
€36.99
Full star icon Full star icon Full star icon Full star icon Full star icon 5 (1 Ratings)
Paperback Aug 2018 314 pages 1st Edition
eBook
€20.98 €29.99
Paperback
€36.99
Subscription
Free Trial
Renews at €18.99p/m
Arrow left icon
Profile Icon Rocha Profile Icon Alberto Simoes Profile Icon Purificação
Arrow right icon
€36.99
Full star icon Full star icon Full star icon Full star icon Full star icon 5 (1 Ratings)
Paperback Aug 2018 314 pages 1st Edition
eBook
€20.98 €29.99
Paperback
€36.99
Subscription
Free Trial
Renews at €18.99p/m
eBook
€20.98 €29.99
Paperback
€36.99
Subscription
Free Trial
Renews at €18.99p/m

What do you get with Print?

Product feature icon Instant access to your digital eBook copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Download this book in EPUB and PDF formats
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
Table of content icon View table of contents Preview book icon Preview Book

Java EE 8 Design Patterns and Best Practices

Presentation Patterns

In this chapter, we'll cover each topic by explaining the concept and showing examples of implementations. After reading this chapter, you will know about these concepts and will be able to implement them using Java EE 8. Here are the topics that are covered in upcoming sections:

  • Explaining the presentation tier
  • Explaining the intercepting filter pattern
  • Implementing the intercepting filter pattern using Java EE 8
  • Explaining the front controller pattern
  • Implementing the front controller pattern
  • Explaining the application controller pattern
  • Implementing the application controller pattern

Explaining the presentation tier

The Java EE platform is a distributed multitiered application model that has three widely used common tiers. These tiers are the presentation tier (or web tier), the business tier, and the integration tier (or EIS tier).

The presentation tier, also known as the web tier, contains the components that create a web application. This tier has many components that use the HTTP protocol, construct views and interfaces for users, and provide a web service. These components are called web components. There are two types of presentation tier:

  • Presentation-oriented tier: This type of presentation tier contains the components to construct an interactive web page and dynamic content using HTML and XHTML. These components are JavaServer Faces technology, Java Servlet technology, and JavaServer Page technology, which allow us to construct an interactive web...

Explaining intercepting filter pattern

When a client sends a request to the server, the server sometimes processes this request/response to perform the following tasks:

  • Validating authentication
  • Generating log
  • Validating constraints
  • Verifying the browser of the client
  • Checking the duration between the request and response; calculating the response time
  • Setting a cookie

However, we don't want to put these tasks within the logic of processing the main request. Consequently, creating a pre-process and/or post-process to do these tasks is a good method for decoupling the main logic from the complementary logic.

The intercepting filter pattern is the pattern that solves problems when we want to insert a logic that is not part of the main logic but we want to keep the two logics separated and decoupled. Merging the new logic with the main logic is a bad...

Implementing the intercepting filter pattern using Java EE 8

To implement this pattern with the best practices of Java EE 8, we will use the servlet filter from the Java Servlet specification. With the servlet filter, we can create an ordered request interceptor to treat the requests and responses. These interceptors are mapped by the URL pattern or servlet name. The servlet filter can be configured with XML (on web.xml) or annotation. In our case, we will imagine that we want to create a log of all the requests that are sent to the server. We will also have two filters—one to log the access time and another to log the information about the browser that the client is using. To log the access time, we will create a filter called LogAccessFilter, and to log the browser information we will create a filter called LogBrowserFilter.

...

Explaining the FrontController pattern

In the Java EE world, we commonly work with complex projects that have similar functionalities and processes. Sometimes, using various controllers to handle a request is a bad practice because it needs to be configured at multiple endpoints and incurs a large cost of creation and maintenance. Consequently, creating a central point to treat a request is a very good solution, as it creates one point to manage all or a group of requests and then sends this request to the correct process. We can then treat all points that are common to all functionalities and send the request to a process to treat the questions that are not common to all but are specific to one functionality. Some configurations, such as session configuration, the maximum size limit of a request, cookie, and header, are common to all requests and can be configured from...

The application controller pattern

Some web applications have a complex logic for defining the correct view, content, or action to invoke. The MVC controller can be used to make this decision and get the correct view, content, or action. However, sometimes the logic to define a decision is very hard, and using the MVC controller to do this can cause duplication of a lot of code. To solve this, we need to centralize the logic at one point to permit an easy maintenance and a central logic point.

The application controller pattern is the pattern that permits the centralization of all view logic and promotes a unique process to define the flow of pages. This pattern is used together with FrontController, discussed earlier, and is an intermediary between FrontController and Command. Using this pattern, we will promote the decoupling between view treatment and request...

Summary

In this chapter, we learned about the presentation tier and looked at the intercepting filter pattern, front controller patterns, and application controller pattern as well as how to implement them. In the real world, we rarely need to implement these patterns because some frameworks, APIs, and specifications already implement them for us. However, it is very important to know about these patterns in order to improve our understanding of the frameworks, APIs, and specifications that implement them. As well as this, we sometimes need to implement some components outside of the framework. Consequently, it is a good idea to use this pattern.

The next chapter will address the business tier and its patterns. Here, we will cover the patterns that act on the business tier. Knowing about these patterns will complement our knowledge of the concepts and implementations...

Left arrow icon Right arrow icon
Download code icon Download Code

Key benefits

  • The benefits and applicability of using different design patterns in JAVA EE
  • Learn best practices to solve common design and architectural challenges
  • Choose the right patterns to improve the efficiency of your programs

Description

Patterns are essential design tools for Java developers. Java EE Design Patterns and Best Practices helps developers attain better code quality and progress to higher levels of architectural creativity by examining the purpose of each available pattern and demonstrating its implementation with various code examples. This book will take you through a number of patterns and their Java EE-specific implementations. In the beginning, you will learn the foundation for, and importance of, design patterns in Java EE, and then will move on to implement various patterns on the presentation tier, business tier, and integration tier. Further, you will explore the patterns involved in Aspect-Oriented Programming (AOP) and take a closer look at reactive patterns. Moving on, you will be introduced to modern architectural patterns involved in composing microservices and cloud-native applications. You will get acquainted with security patterns and operational patterns involved in scaling and monitoring, along with some patterns involved in deployment. By the end of the book, you will be able to efficiently address common problems faced when developing applications and will be comfortable working on scalable and maintainable projects of any size.

Who is this book for?

Java developers who are comfortable with programming in Java and now want to learn how to implement design patterns to create robust, reusable and easily maintainable apps.

What you will learn

  • Implement presentation layers, such as the front controller pattern
  • Understand the business tier and implement the business delegate pattern
  • Master the implementation of AOP
  • Get involved with asynchronous EJB methods and REST services
  • Involve key patterns in the adoption of microservices architecture
  • Manage performance and scalability for enterprise-level applications
Estimated delivery fee Deliver to Belgium

Premium delivery 7 - 10 business days

€17.95
(Includes tracking information)

Product Details

Country selected
Publication date, Length, Edition, Language, ISBN-13
Publication date : Aug 10, 2018
Length: 314 pages
Edition : 1st
Language : English
ISBN-13 : 9781788830621
Vendor :
Oracle
Category :
Languages :
Tools :

What do you get with Print?

Product feature icon Instant access to your digital eBook copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Download this book in EPUB and PDF formats
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
Estimated delivery fee Deliver to Belgium

Premium delivery 7 - 10 business days

€17.95
(Includes tracking information)

Product Details

Publication date : Aug 10, 2018
Length: 314 pages
Edition : 1st
Language : English
ISBN-13 : 9781788830621
Vendor :
Oracle
Category :
Languages :
Tools :

Packt Subscriptions

See our plans and pricing
Modal Close icon
€18.99 billed monthly
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Simple pricing, no contract
€189.99 billed annually
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Choose a DRM-free eBook or Video every month to keep
Feature tick icon PLUS own as many other DRM-free eBooks or Videos as you like for just €5 each
Feature tick icon Exclusive print discounts
€264.99 billed in 18 months
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Choose a DRM-free eBook or Video every month to keep
Feature tick icon PLUS own as many other DRM-free eBooks or Videos as you like for just €5 each
Feature tick icon Exclusive print discounts

Frequently bought together


Stars icon
Total 103.97
Java EE 8 Design Patterns and Best Practices
€36.99
Java EE 8 Development with Eclipse
€41.99
Building RESTful Web Services with Java EE 8
€24.99
Total 103.97 Stars icon

Table of Contents

13 Chapters
Introduction to Design Patterns Chevron down icon Chevron up icon
Presentation Patterns Chevron down icon Chevron up icon
Business Patterns Chevron down icon Chevron up icon
Integration Patterns Chevron down icon Chevron up icon
Aspect-Oriented Programming and Design Patterns Chevron down icon Chevron up icon
Reactive Patterns Chevron down icon Chevron up icon
Microservice Patterns Chevron down icon Chevron up icon
Cloud-Native Application Patterns Chevron down icon Chevron up icon
Security Patterns Chevron down icon Chevron up icon
Deployment Patterns Chevron down icon Chevron up icon
Operational Patterns Chevron down icon Chevron up icon
MicroProfile Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Full star icon Full star icon 5
(1 Ratings)
5 star 100%
4 star 0%
3 star 0%
2 star 0%
1 star 0%
Sílvia Domínguez Oct 16, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Mandatory reading. Clear and concise
Amazon Verified review Amazon
Get free access to Packt library with over 7500+ books and video courses for 7 days!
Start Free Trial

FAQs

What is the delivery time and cost of print book? Chevron down icon Chevron up icon

Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela
What is custom duty/charge? Chevron down icon Chevron up icon

Customs duty are charges levied on goods when they cross international borders. It is a tax that is imposed on imported goods. These duties are charged by special authorities and bodies created by local governments and are meant to protect local industries, economies, and businesses.

Do I have to pay customs charges for the print book order? Chevron down icon Chevron up icon

The orders shipped to the countries that are listed under EU27 will not bear custom charges. They are paid by Packt as part of the order.

List of EU27 countries: www.gov.uk/eu-eea:

A custom duty or localized taxes may be applicable on the shipment and would be charged by the recipient country outside of the EU27 which should be paid by the customer and these duties are not included in the shipping charges been charged on the order.

How do I know my custom duty charges? Chevron down icon Chevron up icon

The amount of duty payable varies greatly depending on the imported goods, the country of origin and several other factors like the total invoice amount or dimensions like weight, and other such criteria applicable in your country.

For example:

  • If you live in Mexico, and the declared value of your ordered items is over $ 50, for you to receive a package, you will have to pay additional import tax of 19% which will be $ 9.50 to the courier service.
  • Whereas if you live in Turkey, and the declared value of your ordered items is over € 22, for you to receive a package, you will have to pay additional import tax of 18% which will be € 3.96 to the courier service.
How can I cancel my order? Chevron down icon Chevron up icon

Cancellation Policy for Published Printed Books:

You can cancel any order within 1 hour of placing the order. Simply contact customercare@packt.com with your order details or payment transaction id. If your order has already started the shipment process, we will do our best to stop it. However, if it is already on the way to you then when you receive it, you can contact us at customercare@packt.com using the returns and refund process.

Please understand that Packt Publishing cannot provide refunds or cancel any order except for the cases described in our Return Policy (i.e. Packt Publishing agrees to replace your printed book because it arrives damaged or material defect in book), Packt Publishing will not accept returns.

What is your returns and refunds policy? Chevron down icon Chevron up icon

Return Policy:

We want you to be happy with your purchase from Packtpub.com. We will not hassle you with returning print books to us. If the print book you receive from us is incorrect, damaged, doesn't work or is unacceptably late, please contact Customer Relations Team on customercare@packt.com with the order number and issue details as explained below:

  1. If you ordered (eBook, Video or Print Book) incorrectly or accidentally, please contact Customer Relations Team on customercare@packt.com within one hour of placing the order and we will replace/refund you the item cost.
  2. Sadly, if your eBook or Video file is faulty or a fault occurs during the eBook or Video being made available to you, i.e. during download then you should contact Customer Relations Team within 14 days of purchase on customercare@packt.com who will be able to resolve this issue for you.
  3. You will have a choice of replacement or refund of the problem items.(damaged, defective or incorrect)
  4. Once Customer Care Team confirms that you will be refunded, you should receive the refund within 10 to 12 working days.
  5. If you are only requesting a refund of one book from a multiple order, then we will refund you the appropriate single item.
  6. Where the items were shipped under a free shipping offer, there will be no shipping costs to refund.

On the off chance your printed book arrives damaged, with book material defect, contact our Customer Relation Team on customercare@packt.com within 14 days of receipt of the book with appropriate evidence of damage and we will work with you to secure a replacement copy, if necessary. Please note that each printed book you order from us is individually made by Packt's professional book-printing partner which is on a print-on-demand basis.

What tax is charged? Chevron down icon Chevron up icon

Currently, no tax is charged on the purchase of any print book (subject to change based on the laws and regulations). A localized VAT fee is charged only to our European and UK customers on eBooks, Video and subscriptions that they buy. GST is charged to Indian customers for eBooks and video purchases.

What payment methods can I use? Chevron down icon Chevron up icon

You can pay with the following card types:

  1. Visa Debit
  2. Visa Credit
  3. MasterCard
  4. PayPal
What is the delivery time and cost of print books? Chevron down icon Chevron up icon

Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela