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{{Infobox programming language
| name                   = BeanShell
| logo                   =
| paradigm               = [[Object-oriented programming|Object-oriented]], [[scripting language|scripting]]
| year                   = {{Start date and age|1999}}
| designer               = [[Java Community Process|JCP]]
| developer              =
| latest release version = {{wikidata|property|reference|P348}}
| latest release date    = {{start date and age|{{wikidata|qualifier|P348|P577}}}}
| typing                 = [[Type system#Combining static and dynamic type checking|Dynamic]], [[Strong and weak typing|strong]]
| implementations        =
| dialects               =
| influenced_by          = [[Java (programming language)|Java]], [[JavaScript]], [[Perl]]
| platform               = [[Java virtual machine|JVM]]
| operating_system       = [[Cross-platform]]
| programming language   = [[Java (programming language)|Java]]
| license                = 2012: [[Apache License|Apache-2.0]]{{efn|Apache-2.0: Since 2.0b5}}<ref name="license">{{cite web | url=http://www.beanshell.org/license.html | title=BeanShell Software License | first=Pat | last=Niemeyer | website=beanshell.org | access-date=January 13, 2016}}</ref><ref name="Apache_license">{{ cite web | url=https://github.com/beanshell/beanshell | title=BeanShell |website=github.com | access-date=January 13, 2016}}</ref><br />2001: [[Sun Public License|SPL-1.0]] or [[GNU Lesser General Public License|LGPL-2.1-only]]{{efn|SPL-1.0 or LGPL-2.1-only: From 1.1alpha5 to 2.0b4}}<ref>{{cite web|url=https://github.com/beanshell/beanshell/blob/master/CHANGES.md|title=CHANGES.md|website=[[GitHub]] }}</ref><br />1999: [[GNU Lesser General Public License|LGPL-2.1-only]]{{efn|LGPL-2.1-only: 1.0 to 1.1alpha3}}<ref>{{cite web|url=https://github.com/beanshell/beanshell/blob/1.0/BeanShell/src/License.txt|title=License.txt in 1.0|website=[[GitHub]] }}</ref>
| website                = {{URL|https://github.com/beanshell/beanshell}}
}}
'''BeanShell''' is a small, free, embeddable Java source interpreter with object scripting language features, written in [[Java (programming language)|Java]]. It runs in the [[Java virtual machine#Java Runtime Environment|Java Runtime Environment]] (JRE), dynamically executes standard Java syntax and extends it with common scripting conveniences such as loose types, commands, and method closures, like those in Perl and JavaScript.

== Features ==
While BeanShell allows its users to define [[Subroutine|functions]] that can be called from within a script, its underpinning philosophy has been to not pollute its syntax with too many extensions and "[[syntactic sugar]]", thereby ensuring that code written for a Java [[compiler]] can usually be executed [[interpreter (computing)|interpretively]] by BeanShell without any changes and, almost just as much, vice versa. This makes BeanShell a popular [[software testing|testing]] and [[debugging]] tool for the [[Java virtual machine]] (JVM) platform.

BeanShell supports scripted objects as simple method [[Closure (computer programming)|closures]] like those in [[Perl]] and [[JavaScript]].

BeanShell is an [[Open-source model|open source]] project and has been incorporated into many applications, such as [[Apache OpenOffice]], [[Apache Ant]], [[Oracle WebLogic Server|WebLogic Server]] Application Server, [[Apache JMeter]], [[jEdit]], [[ImageJ]], [[JUMP GIS]], [[Apache Taverna]], and many others. BeanShell provides an easy to integrate [[application programming interface]] (API). It can also be run in command-line mode or within its own graphical environment.

==History ==
The first versions of BeanShell (0.96, 1.0) were released by Patrick Niemeyer in 1999, followed by a series of versions. BeanShell 1.3.0 was released in August 2003. Version 2.0b1 was released in September 2003, culminating with version 2.0b4 in May 2005, which as of January 2015 is the newest release posted on the official webpage.<ref>{{cite web|title=BeanShell Downloads|url=http://beanshell.org/download.html|website=beanshell.org|access-date=28 January 2015|date=2009-01-28}}</ref>

BeanShell has been included in the Linux distribution [[Debian]] since 1999.<ref>{{cite web|title=Source Package: bsh (2.0b4-12)|url=https://packages.debian.org/source/stable/bsh|website=Debian|access-date=28 January 2015}}</ref>

BeanShell was undergoing [[standardization]] through the [[Java Community Process]] (JCP) under JSR 274.<ref>[http://www.jcp.org/en/jsr/detail?id=274 The Java Community Process(SM) Program - JSRs: Java Specification Requests - detail JSR# 274]. Jcp.org. Retrieved on 2013-07-21.</ref>

Following the JCP approval of the BeanShell JSR Review Ballot in June 2005, no visible activity was taking place around BeanShell.<ref name=":0">{{Cite web|url=https://jcp.org/en/jsr/results?id=3208|title=The Java Community Process(SM) Program - JSRs: Java Specification Requests - results|website=jcp.org}}</ref> The JSR 274 status is "Dormant".

Since Java 9, Java instead includes [[JShell]], a different [[read–eval–print loop]] (REPL) shell based on Java syntax, indicating that BeanShell will not be continued.<ref>{{Cite web|title = JEP 222: jshell: The Java Shell (Read-Eval-Print Loop)|url = http://openjdk.java.net/jeps/222|website = openjdk.java.net|access-date = 2015-09-03}}</ref>

A [[Fork (software development)|fork]] of BeanShell, ''BeanShell2'', was created in May 2007 on the now-defunct [[Google Developers#Google Code|Google Code]] Web site.<ref>[https://code.google.com/p/beanshell2/ beanshell2 - fork of BeanShell - Google Project Hosting]. Code.google.com (2011-11-21). Retrieved on 2013-07-21.</ref> The ''beanshell2'' project has made a number of fixes and enhancements to BeanShell and multiple releases. {{As of|January 2020}}, the latest version of BeanShell2 is v2.1.9, released March 2018.<ref>{{cite web |last1=Jodeleit |first1=Peter |title=README.md |website=[[GitHub]] |url=https://github.com/pejobo/beanshell2/blob/0ed03360b61316b755742257f163b5fb564d821a/dist/README.md |access-date=23 January 2020}}</ref> This fork was merged back into the original tree in 2018,<ref>{{cite web|url=https://github.com/beanshell/beanshell/issues/46|title=Fork to investigate possible merge · Issue #46 · beanshell/Beanshell |website=[[GitHub]] }}</ref> retaining all the independent changes from both, and the official project has been hosted at [[GitHub]].<ref>https://github.com/beanshell/beanshell GitHub - beanshell/beanshell: Beanshell, a scripting language for the Java Virtual Machine. Retrieved on 2018-03-06.</ref>   

In December 2012, following a proposal to accept BeanShell as an Apache Incubator project,<ref>{{cite web|author1=Tripodi, S|author2=Bazley, S|title=BeanShell proposal|url=https://wiki.apache.org/incubator/BeanShellProposal|website=Incubator Wiki|publisher=Apache Software Foundation|date=2012}}</ref> BeanShell was licensed to [[The Apache Software Foundation]] and migrated to the Apache Extras,<ref name="auto">{{Cite web|url=https://github.com/beanshell/beanshell|title=beanshell/beanshell|date=January 27, 2021|via=GitHub}}</ref> changing the license to [[Apache License|Apache License 2.0]]. The project was not accepted but instead projected to become part of the [[Apache Commons]] at a future time.

Due to changes in the developers' personal circumstances, the BeanShell community did not, however, complete the move to Apache,<ref>{{cite web|last1=Tripodi|first1=Simone|title=Beanshell under Apache?|url=https://www.mail-archive.com/dev@taverna.incubator.apache.org/msg00224.html|website=Apache Taverna developer mailing list|publisher=Apache Software Foundation|access-date=28 January 2015|date=2015-01-08}}</ref> but remained at Apache Extras. The project has since released BeanShell 2.0b5,<ref name="auto"/> which is used by [[Apache OpenOffice]] and [[Apache Taverna]].

A Windows automated installer, BeanShell Double-Click,<ref>[[SourceForge:projects/beanshelldouble/|BeanShell Double-Click | Free Development software downloads at]]. Sourceforge.net. Retrieved on 2013-07-21.</ref> was created in 2013. It includes desktop integration features.

== See also ==
{{Portal|Free and open-source software|Computer programming}}
*[[List of JVM languages]]
*[[Comparison of programming languages]]
*[[Comparison of command shells]]

== Notes ==
{{notelist}}

== References ==
{{Reflist}}

== External links ==
*
*[https://code.google.com/a/apache-extras.org/p/beanshell/ BeanShell at Apache Extras]

{{Java (software platform)}}

[[Category:Scripting languages]]
[[Category:Java programming language family]]
[[Category:JVM programming languages]]
[[Category:Dynamically typed programming languages]]
[[Category:Java specification requests]]
[[Category:Software using the GNU Lesser General Public License]]
[[Category:Software using the Apache license]]