![]() Package Versioning: A JAR file can hold data about the files it contains, such as vendor and version information.Sealing a package within a JAR file means that all classes defined in that package must be found in the same JAR file. Package Sealing: Packages stored in JAR files can be optionally sealed so that the package can enforce version consistency.By using the JAR file format, you can turn your software into extensions as well. Packaging for extensions: The extensions framework provides a means by which you can add functionality to the Java core platform, and the JAR file format defines the packaging for extensions.Compression: The JAR format allows you to compress your files for efficient storage.Decreased download time: If your applet is bundled in a JAR file, the applet's class files and associated resources can be downloaded to a browser in a single HTTP transaction without the need for opening a new connection for each file.Users who recognize your signature can then optionally grant your software security privileges it wouldn't otherwise have. Security: You can digitally sign the contents of a JAR file.The JAR file format provides many benefits: Typically a JAR file contains the class files and auxiliary resources associated with applets and applications. The Java™ Archive (JAR) file format enables you to bundle multiple files into a single archive file. ![]()
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