Introduction

This course dives into Java EE (J2EE) technologies for building robust web applications, focusing on Servlets, JavaServer Pages (JSP), and WebSockets. These technologies are fundamental for creating dynamic, interactive, and real-time web applications. Participants will gain practical skills in building web applications that integrate these technologies, ensuring a deep understanding of the request-response lifecycle, session management, and real-time communication.

Prerequisites

• Java Programming Basics: A solid understanding of Java programming and object-oriented principles.
• Web Development Fundamentals: Familiarity with HTTP, HTML, CSS, and JavaScript.
• J2EE Core Concepts: Basic knowledge of J2EE concepts like Enterprise JavaBeans (EJB) and Java Persistence API (JPA).
• Databases: Basic understanding of SQL and relational databases.

Table of Contents

1. Introduction to Java EE (J2EE) Web Technologies
1.1. Overview of Java EE (J2EE) and its Components
1.2. The Role of Web Technologies in J2EE Applications
1.3. Benefits of Using Servlets, JSP, and WebSockets
1.4. Overview of Web Containers and Servers (e.g., Apache Tomcat, GlassFish)
1.5. Setting Up a Java EE Development Environment

2. Understanding Servlets
2.1. What is a Servlet?
2.2. Servlet Lifecycle: init(), service(), destroy()
2.3. Handling HTTP Requests and Responses
2.4. Managing Session Data in Servlets
2.5. Servlet Annotations and Configuration
2.6. Best Practices for Servlet Development

3. JavaServer Pages (JSP)
3.1. What is JSP and How Does It Work?
3.2. JSP Syntax: Directives, Expressions, and Declarations
3.3. Using JavaBeans in JSP
3.4. JSP Implicit Objects: request, response, session, etc.
3.5. JSP Lifecycle and Page Compilation
3.6. Integrating JSP with Servlets
3.7. Custom Tags and Tag Libraries in JSP

4. Working with JavaBeans in Web Applications
4.1. What Are JavaBeans and Their Role in Web Applications?
4.2. Creating and Using JavaBeans in Servlets and JSP
4.3. Data Binding and Property Editors in JSP
4.4. Model-View-Controller (MVC) Pattern with JSP and Servlets

5. Session Management in Web Applications
5.1. Session Tracking in Servlets and JSP
5.2. Using Cookies for Session Management
5.3. Session Objects and HttpSession API
5.4. Session Timeout and Management Strategies
5.5. Security Considerations in Session Management

6. Java WebSockets: Real-Time Communication
6.1. Introduction to WebSockets in Java
6.2. WebSocket API Overview
6.3. Creating WebSocket Endpoints
6.4. Handling Real-Time Data with WebSockets
6.5. WebSocket Communication and Protocols (Text, Binary)
6.6. Using WebSockets with Servlets and JSP for Real-Time Updates

7. Advanced Topics in WebSockets
7.1. Implementing Broadcasting and Messaging in WebSockets
7.2. Error Handling and Exceptions in WebSocket Applications
7.3. Security Considerations in WebSocket Communications
7.4. Scaling WebSocket Applications for High Traffic
7.5. Integrating WebSockets with Front-End Frameworks (React, Angular)

8. Building MVC-based Web Applications
8.1. Overview of the Model-View-Controller (MVC) Pattern
8.2. Implementing MVC with Servlets, JSP, and JavaBeans
8.3. Using JSP for View, Servlets for Controller, and JavaBeans for Model
8.4. Decoupling Business Logic and Presentation Layer
8.5. Best Practices for MVC in J2EE Web Applications

9. Error Handling and Debugging in Web Applications
9.1. Error Pages in Servlets and JSP
9.2. Exception Handling with try-catch and Web Containers
9.3. Logging and Debugging Tools for Web Applications
9.4. Troubleshooting Common Issues in Servlets and JSP
9.5. Using JUnit for Unit Testing in Web Applications

10. Security in Web Applications
10.1. Securing Web Applications with SSL/TLS
10.2. Authentication and Authorization in Java EE
10.3. Using JAAS (Java Authentication and Authorization Service)
10.4. Preventing Common Security Vulnerabilities (XSS, CSRF, SQL Injection)
10.5. Integrating OAuth and OpenID for Secure Authentication

11. Deploying Web Applications
11.1. Preparing J2EE Applications for Deployment
11.2. Packaging and Deploying Web Applications (WAR Files)
11.3. Deploying on Web Servers (Tomcat, GlassFish, WildFly)
11.4. Continuous Deployment and Integration (CI/CD) for Web Applications
11.5. Managing and Monitoring Web Applications in Production

12. Conclusion and Future Directions in Java EE Web Technologies
12.1. Recap of Key Concepts and Technologies
12.2. Java EE vs. Modern Alternatives (Spring, Microservices)
12.3. Future Trends in Web Development: Reactive Programming, Serverless, and Cloud-Native Apps
12.4. Preparing for Advanced Topics in Java Web Development
12.5. Resources for Further Learning and Certification

Conclusion

This course provides a comprehensive exploration of Java EE (J2EE) technologies for building dynamic, scalable, and secure web applications. By mastering Servlets, JSP, and WebSockets, developers will be equipped to create sophisticated web-based systems with real-time communication and efficient session management. With a strong foundation in these core technologies, participants will be prepared for advanced Java web development, incorporating modern practices like MVC architecture, security strategies, and deployment methodologies.