

An option to digitally sign those archives using the jar sign tools is also available. The JAR files can be retrieved or developed from scratch using JDK's jar command and tools. zip file format permits many compression algorithms, though DEFLATE is the most common. zip file may contain one or more files or directories that may have been compressed. ZIP is an archive file format that supports lossless data compression.

For example, mobile games use them to store game data, and Mozilla Firefox, Thunderbird, and other products store themes and add-ons. With JRE installed on computers and mobile phones, it can run independently and serve as a program library. Thus, their further easy distribution across the java platform has been simplified and became more user-friendly. JAR is a framework used to group different classes of java files (programs and software) and other resources and data related to it (images, texts, etc). Netscape, Sun Microsystems, Oracle Corporation
