Java EE, which stands for Java Platform, Enterprise Edition, is a collection of Java APIs (Application Programming Interfaces) and runtime environments that provide developers with a standardized set of tools for building enterprise-level applications. Java EE is designed to simplify the development of large-scale, distributed, and multi-tiered applications that can be deployed across a variety of platforms.
Java EE simplifies enterprise applications by defining and specifying a complete set of common standard services, such as naming, transaction management, concurrency, security, and database access. Java EE also defines a container model, which houses and manages instances of Java EE application components.
1. Component-Based Architecture
2. Enterprise JavaBeans (EJB)
3. Servlets and Java Server Pages (JSP)
4. Java Persistence API (JPA)
5. Java Message Service (JMS)
6. Java Transaction API (JTA)
7. Java Naming and Directory Interface (JNDI)
8. Security
9. Concurrency Utilities
10. Integration and Connectivity
1. Java EE Architecture and Design Patterns
2. Advanced Java Server Faces (JSF)
3. Java EE Persistence and Data Access
4. Java EE Concurrency and Transactions
5. Java EE Messaging and Integration
6. Java EE Security and Microservices
J2EE mainly helped develop any kind of web-based application by taking critical help of common HTML pages, varieties other applications, or Java applets.
The J2EE platform provides choices for graphical user interfaces across a company's intranet or on the World Wide Web. Clients can run on desktops, laptops, PDAs, cell phones, and other devices. Pure client-side user interfaces can use standard HTML and Java applets.
J2EE was developed to provide for enterprise level applications that could integrate easily with other software applications, and exceed requirements such as scalability, reliability, and security
For Java 5 in 2006, J2EE was renamed to Java EE or Java Platform Enterprise Edition.
J2EE applications are made up of JavaServer Pages (JSP), Java servlets, and Enterprise JavaBeans (EJB) modules. J2EE applications are packaged in Java Archive (JAR) files, which are later distributed to production sites.
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