JAR

A file format used to package multiple Java class files and resources into a single archive.

• A JAR file is essentially a ZIP archive used to package Java class files, resources, and metadata into a single file.
• It acts as a compressed and organized way to distribute Java applications, libraries, and applets.
• Similar to how ZIP files bundle various files together, JAR files specifically cater to the needs of Java programs.

Why are JAR files used in web development?

• Distribution and deployment: JAR files allow easier distribution of Java applications and libraries. You can share a single JAR file instead of numerous individual files, simplifying sharing and deployment.
• Organization: JAR files keep Java code and resources organized and bundled together, improving maintainability and clarity.
• Security: JAR files can be signed digitally to verify their authenticity and integrity, enhancing security in distributed environments.
• Standardization: JAR format is a widely used standard for Java code packaging, ensuring compatibility with various platforms and tools.

How are JAR files used in web development?

• Web applications: JAR files can be part of web applications deployed on servers, containing code and resources needed for the application to function.
• Applets: Java applets, small embedded Java programs within web pages, are often delivered as JAR files.
• Libraries: Developers can create and distribute reusable Java libraries as JAR files. These libraries can be easily integrated into other projects.