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Introduction to Servlets/JSPs, MVC, EL, JPA & More
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OverviewJava Enterprise Edition (JEE) is a powerful platform for building web applications. The JEE platform offers all the advantages of developing in Java plus a comprehensive suite of server-side technologies. This course tells you what you need to know to design and build your own web applications. You'll learn the details of the key JEE technologies and how to leverage the strengths of each, with special focus on Servlets and JSPs. At the same time, you'll be learning about the big picture of JEE and how to design web applications that are robust, efficient, secure, and maintainable. If you want to deliver an application on the web, you'll find this course essential.
Introduction to JEE Web Essentials is a two-day hands-on training course geared for experienced Java developers new to Enterprise Development in Java, who need to get up and running with essential dynamic web development skills. This course provides core JEE knowledge and skills that can be used as the foundation for developing production-quality web applications to a basic level.
Students will leave the course armed with the basic skills required to design and build scalable, secure, maintainable web applications - leveraging our extensive experience in the delivery of scalable enterprise applications with complex web interfaces based on JEE technologies.
Throughout this training, students will explore with common web application design problems and given the tools you will need to solve them, such as JEE design patterns. They will also be exposed to a range of JEE and web technologies such as Servlets, JSPs, JSTL and advice on when and how to use them. Students will also learn about the capabilities of servlets, their advantages, servlet architecture, and session management. Developers will also learn about managing resources, deployment, and application models, how to use custom tags, and how to build robust and capable web applications using servlets and other components.
The course begins with a discussion of web application architecture. A major part of the course is spent on the various web components that are used to implement dynamic web applications. Students will learn not only specific topics and APIs but also how to fit the pieces together into a complete application. Topics covered include:
- JEE Application Architecture
- Java Server Pages (JSP), EL, and JSTL
- Enterprise Application Software
- Requirements of Enterprise applications
- Scalability, Load Balancing, Fail Over
- Resource pooling
- Overview of Java EE Core Components
- Web Tier Components
- Application Tier
- Deployable Units
- Deployment Descriptors
- The Java Naming and Directory Interface (JNDI)
- Tutorial: Working with Eclipse (JEE Version) and Apache TomEE 7x
- Tutorial: Working with TomEE 7
- The Servlet Interface
- The Web Container
- Creating HTML Output Using Servlets
- The @Webservlet Annotation
- Interaction Between web.xml and Annotations
- The @Webinitparam Annotation
- Using HTML5 Forms with Servlets
- Processing Request Parameters
- HttpServletRequest Methods
- HttpServletResponse Methods
- Java Server Pages (JSPs)
- The Relationship Between JSPs and Servlets
- The JSP lifecycle
- The role of JSPs in Java EE 7
- Model View Control
- Using the Request Dispatcher
- Handling Requests
- The Request Scope
- Handling Request Attributes
- The Expression Language (JSR 341)
- EL in Template text
- Sessions in Web Applications
- The HttpSession object
- Session Management in Java EE
- Handling Cookies
- Introduce Servlet Filters
- Modify the request data
- Modify the response data
- The @WebFilter annotation
- Define Filter Mappings
- Move functionality out into a decorator pattern
- The Expression Language (JSR 341)
- Value and Method Expressions
- Immediate and Deferred Evaluation Syntax
- Read and Read/Write expressions
- EL Operators
- EL Reserved Words
- EL Implicit objects
- Referencing Objects using EL
- DataSources in JEE
- Setup a DataSource
- Using CDI to inject a DataSource
- Introduce the Java Persistence API (JPA)
- Benefits of Using an ORM framework
- Hibernate and JPA
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