Скачать или смотреть Creating JAR Files Using Java Command Line | Made Easy Jar files | Java CLI Guide for Beginners

Learn how to create a JAR file in Java using the command line
In this quick and easy tutorial, you'll see how to compile Java files and package them into a JAR file without using any IDE.

What you'll learn:
Compiling .java files into .class files
Creating a JAR file with jar command
Adding a manifest file (optional) for executable jar files
Running your JAR from the terminal

Perfect for beginners and anyone working in a lightweight or terminal-only environment!
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Types of packaging in Java:
JAR (Java Archive)
WAR (Web Application Archive)
EAR (Enterprise Application Archive)
Exploded Format
Uber JAR / Fat JAR
Modular JAR (Java 9+)
Native Image / Executable Packaging (GraalVM or jpackage)
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EJB (Enterprise JavaBeans) is not a packaging format like JAR or WAR but a Java EE/Jakarta EE component model for building distributed business logic. However, EJBs are typically packaged inside JAR, WAR, or EAR files for deployment.

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Web Server versus Application Server

Web Server

Purpose: Handles only HTTP requests and serves static content.

Does Not Handle: Full business logic, EJBs, or advanced services.

Examples: Tomcat, Jetty are examples of web servers.

Application Server

Purpose: Enterprise-grade apps provide a full Java EE stack to handle dynamic requests, business logic, and enterprise services.

Supports Servlets, JSP, EJB, JPA, JMS, JTA, Web Services, and more.

Examples: WildFly / JBoss, GlassFish, WebLogic.
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