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A JAR ("Java archive") file is a package file format typically used to aggregate many Java class files and associated metadata and resources (text, images, etc.) into one file for distribution. [4] JAR files are archive files that include a Java-specific manifest file. They are built on the ZIP format and typically have a .jar file extension. [5]
The practice of using manifests and checksums is fairly common practice as evidenced by their use in ZIP (file format), the Deb (file format), as well as on public FTP sites. In 2007, the California Digital Library needed to transfer several terabytes of content (largely Web archiving data) to the Library of Congress. The BagIt specification ...
file format from NoGate Consultings, a rival from ARC-Compressor. .pak was also briefly used by the short lived MSDOS PKPAK program. .partimg PartImage: Multiple Multiple Yes A disk image archive format that supports several compression methods as well as splitting the archive into smaller pieces. .paq6, .paq7, .paq8 and variants PAQ: Unix-like ...
In MS-DOS and Microsoft Windows, and other operating systems such as Atari DOS, filespec is a term meaning a filename identifier that specifies both the name and location of a single file. The filespec differs from the filename in that the filespec includes a complete specification, within a particular file system, of the file's location.
Software distributors use executable compression for a variety of reasons, primarily to reduce the secondary storage requirements of their software; as executable compressors are specifically designed to compress executable code, they often achieve better compression ratio than standard data compression facilities such as gzip, zip or bzip2 [citation needed].
These files contain Enterprise JavaBeans (EJB) modules or utility classes. Each JAR file usually has its own META-INF directory with deployment descriptors specific to the JAR module. WAR Files: These files contain web modules, including servlets, JSP files, HTML files, and other web resources. Each WAR file typically has the following structure:
Each entry in the FAT linked list is a fixed number of bits: 12, 16 or 32. The maximum size of a file or a disk drive that can be accessed is the product of the largest number that can be stored in the entries (less a few values reserved to indicate unallocated space or the end of a list) and the size of the disk cluster.
File formats often have a published specification describing the encoding method and enabling testing of program intended functionality. Not all formats have freely available specification documents, partly because some developers view their specification documents as trade secrets, and partly because other developers never author a formal specification document, letting precedent set by other ...