Editing JAR (file format) (section)

{{Short description|Java archive file format}}
{{Infobox file format
| name          = Java Archive
| icon          = [[Image:Nuvola mimetypes java jar.png|[[KDE]] JAR file icon]]
| iconcaption   = [[KDE]] JAR file icon
| extension     = <code>.jar</code>
| mime          = application/java-archive<ref>{{cite web|title=File Extension .JAR Details|url=https://filext.com/file-extension/JAR|access-date=29 November 2012}}</ref><ref>{{cite web|title=MIME : Java Glossary|url=http://mindprod.com/jgloss/mime.html|access-date=29 November 2012}}</ref><ref>{{cite web|title=IANA Assignment|url=https://www.iana.org/assignments/media-types/application/java-archive|access-date=12 May 2023}}</ref>
| type code     = 
| uniform type  = com.sun.java-archive
| magic         = <code>50 4b 03 04</code> ASCII:PK\x03\x04
| owner         = [[Netscape]], [[Sun Microsystems]], [[Oracle Corporation]]
| genre         = [[File archive]], [[data compression]]
| container for = 
| contained by  = 
| extended from = [[ZIP (file format)|ZIP]]
| extended to   = 
| standard      = 
| url           = 
}}

A '''JAR''' ("Java archive") file is a [[package format|package]] [[file format]] typically used to aggregate many [[Java class file]]s and associated [[metadata]] and resources (text, images, etc.) into one file for distribution.<ref>{{cite web|url=http://java.sun.com/javase/6/docs/technotes/guides/jar/index.html|title=JDK 6 Java Archive (JAR)-related APIs & DeveloperGuides}}</ref>

JAR files are [[archive file]]s that include a Java-specific [[manifest file]]. They are built on the [[ZIP (file format)|ZIP format]] and typically have a <code>.jar</code> [[file extension]].<ref>{{cite web| title=JAR File Specification| publisher=Oracle| work=Java SE Documentation| url=http://docs.oracle.com/javase/6/docs/technotes/guides/jar/jar.html#JARIndex| url-status=live| archive-url=https://web.archive.org/web/20170911103525/http://docs.oracle.com/javase/6/docs/technotes/guides/jar/jar.html#JARIndex| archive-date=2017-09-11}}</ref>