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    v147 v237  
    11[[TranslatedPages]]
    22[[PageOutline(2-3,Table of Contents)]]
     3
    34= Download =
    45
     
    78And for very complex issues see [wikitr:/InstallNotes Installation Notes].
    89
    9 == Recommended options ==
    10 
    11 [[JOSMImage(openlocation, valign=middle, link=[download/josm.jnlp])]] **Start [/download/josm.jnlp josm.jnlp]** (newest tested version) [[br]]
    12 Recommended version, all platforms, automatic update to the newest ''tested version'' monthly ([#Webstart how to start]). [[br]]
    13 [[br]]
    14 
    15 [[JOSMImage(download, valign=middle, link=[/josm-tested.jar])]] **Download [/josm-tested.jar josm-tested.jar]** (tested version [[Version(tested)]]) [[br]]
    16 All platforms ([#Java how to run]). [[br]]
    17 [[br]]
     10== Recommended options ==#Recommendedoptions
     11[[JOSMImage(openlocation, valign=middle, link=[/download/josm.jnlp])]] **Start [/download/josm.jnlp josm.jnlp]** (newest tested version) \\
     12Recommended version, all platforms, automatic update to the newest ''tested version'' monthly ([#Webstart how to start]). \\ \\
     13
     14[[JOSMImage(download, valign=middle, link=[/josm-tested.jar])]] **Download [/josm-tested.jar josm-tested.jar]** (tested version [[Version(tested)]]) \\
     15All platforms ([#Java how to run]). \\ \\
     16
    1817
    1918== All download options ==#Moredownloadoptions
    20 
    2119Every [/roadmap month] the team of JOSM [wikitr:/Releases releases] a **tested version** for download.
    22 The MS Windows and Apple Mac variants are built on this tested version.
     20The MS Windows and Apple macOS variants are built on this tested version.
    2321When you click on josm.jnlp to launch JOSM you will always get the newest tested version. Java's [wikitr:/InstallNotes#Webstart Web Start] is the mechanism behind this.
    2422
     
    2826For the latest version is also a Web Start variant available.
    2927
    30 
    31 ||= =||||= For all operating systems =||||||||||
    32 ||=Version =||=  Web Start  =||= Download =||= Windows =||= Apple Mac =||= Ubuntu, Debian…  =||= openSUSE =||
    33 ||tested [[Version(tested)]] ||   \
    34 ||   [/download/josm.jnlp josm.jnlp] ||  \
    35 ||   [/josm-tested.jar] ||           \
    36 ||   [[br]] [/download/windows/josm-setup.exe setup.exe] [[br]]''([#Mswindowswrapper see below])'' ||  \
    37 ||   [[br]] [/download/macosx/josm-macosx.zip package.zip] [[br]]''([#Macoserrors see below])'' ||  \
    38 ||   ''[#Ubuntu see below]'' ||          \
    39 ||   ''[#Opensuse see below]'' ||
    40 ||latest [[Version(latest)]] || \
    41 ||   [/download/josm-latest.jnlp latest.jnlp] ||  \
    42 ||   [/josm-latest.jar] || \
    43 ||   || || ''[#Ubuntu see below]'' || ||
    44 ||=older =|| || [/download/ download/] || || || [/apt/dists/ dists/] || ||
    45 
    46 When running scripts please first check on [/latest latest], [/tested tested] or [/version both] to reduce download bandwidth.
     28||= =||||= **For all operating systems** =|| || || || || ||= **Development** =||
     29||=**Version** =||= **Web Start** =||= **Download** =||= **Windows** =||= **Apple macOS** =||= **Ubuntu, Debian…** =||= **openSUSE** =||= **Arch Linux** =||= **Jar / Javadoc / Source** =||
     30||**tested [[Version(tested)]]** ||  \
     31||  [/download/josm.jnlp josm.jnlp]  ||  \
     32||  [/josm-tested.jar]  ||  \
     33||  \\ [/download/windows/josm-setup.exe josm-setup.exe] \\ [/download/windows/josm-setup.msi josm-setup.msi] \\ [https://apps.microsoft.com/store/detail/josm/XPFCG1GV0WWGZX Microsoft Store]\\ ''([#Mswindowswrapper see below])''  ||  \
     34||  \\ [/download/macosx/josm-macosx.zip JOSM macOS .zip package] \\ ''or ([#macOS homebrew])''  ||  \
     35||  ''[#Ubuntu see below]''  ||  \
     36||  ''[#Opensuse see below]''  ||  \
     37||  ''[#ArchLinux see below]''  ||  \
     38||  [/repository/releases/org/openstreetmap/josm/josm/ josm]:[[Version(tested)]]  ||
     39||**latest [[Version(latest)]]** ||  \
     40||  [/download/josm-latest.jnlp latest.jnlp]  ||  \
     41||  [/josm-latest.jar]  ||  \
     42||  ''see [https://github.com/openstreetmap/josm/releases releases on github]  ||  \
     43||  ''see [https://github.com/openstreetmap/josm/releases releases on github]  ||  \
     44||  ''[#Ubuntu see below]''  || ||  \
     45||  ''[#ArchLinux see below]''  ||  \
     46||  [/repository/snapshots/org/openstreetmap/josm/josm/SNAPSHOT/ Use snapshots]  ||
     47||=''**older**'' =|| ||  \
     48||  [/download/ download/]  ||  \
     49||  ''see [https://github.com/openstreetmap/josm/releases releases on github]  ||  \
     50||  ''see [https://github.com/openstreetmap/josm/releases releases on github]  ||  \
     51||  [/apt/pool/universe/j/ pool/]  || || ||  \
     52||  [/repository/releases/org/openstreetmap/josm/josm/ tested versions]  ||
     53
     54When running scripts please first check on [/latest latest], [/tested tested] or [/version all] to reduce download bandwidth.
    4755
    4856** Strip translations **[=#Striptranslations]  \\
    4957If download size is an issue, smaller files of the tested version are available. For downloads containing only English append [/josm-tested.jar?lang=en ?lang=en] to the URL. To include one translation replace `en` with the [wikitr:/TracLanguages language code] you want (lowercase first character, supported languages only). You can further reduce the file size by stripping the signing information off with appending [/josm-tested.jar?lang=en&unsigned=1 ?unsigned=1].
    5058
     59
    5160== Linux Repositories ==
    52 
    5361=== JOSM's Debian based mainly for Ubuntu ===#Ubuntu
    54 
    5562This is our own package repository primarily for Ubuntu. It should also work with other Debian based (especially Ubuntu based) distributions, but we do not actively test and maintain any distributions other than Ubuntu.
    5663
    5764The repository contains two packages:
    58 * ''josm''  – Provides the tested version (stable).  Replaces the package from the official Ubuntu repository.
    59 * ''josm-latest'' – The latest version (nightly). Can be installed parallel to the josm package. The default preference folder is {{{~/.josm-latest}}}.
     65* ''josm'' – Provides the tested version (stable). Replaces the package from the official repository of your distribution. The default JOSM directories name is set to `JOSM`.
     66* ''josm-latest'' – The latest version (nightly). Can be installed in parallel to the josm package, therefore the default JOSM directories name is set to `JOSM-latest`.
     67Both packages provide `/etc/default/josm` respectively `/etc/default/josm-latest` as config file for [wikitr:Help/CommandLineOptions#Javaoptions java options].
    6068
    6169In addition to the regular procedure described below, older DEBs can be manually downloaded from the [/apt/pool/universe/j/ archives].
    6270
    6371==== Installation ====
    64 
    65 Edit the package resource list {{{/etc/apt/sources.list}}}:
    66 
    67 {{{#!sh
    68 sudo editor /etc/apt/sources.list
     72Edit the package resource list `/etc/apt/sources.list.d/josm.list`:
     73{{{#!sh
     74sudo editor /etc/apt/sources.list.d/josm.list
    6975}}}
    7076{{{#!comment
    7177### below does not work on GNU Debian systems
    72 `sudo $EDITOR /etc/apt/sources.list`
     78`sudo $EDITOR /etc/apt/sources.list.d/josm.list`
    7379}}}
    7480
     
    7682
    7783{{{#!sh
    78 deb https://josm.openstreetmap.de/apt artful universe
    79 deb https://josm.openstreetmap.de/apt bionic universe
    80 deb https://josm.openstreetmap.de/apt disco universe
    81 deb https://josm.openstreetmap.de/apt eoan universe
     84deb [signed-by=/etc/apt/keyrings/josm-apt.gpg] https://josm.openstreetmap.de/apt stonking universe
     85deb [signed-by=/etc/apt/keyrings/josm-apt.gpg] https://josm.openstreetmap.de/apt resolute universe
     86deb [signed-by=/etc/apt/keyrings/josm-apt.gpg] https://josm.openstreetmap.de/apt questing universe
     87deb [signed-by=/etc/apt/keyrings/josm-apt.gpg] https://josm.openstreetmap.de/apt plucky universe
     88deb [signed-by=/etc/apt/keyrings/josm-apt.gpg] https://josm.openstreetmap.de/apt oracular universe
     89deb [signed-by=/etc/apt/keyrings/josm-apt.gpg] https://josm.openstreetmap.de/apt noble universe
     90deb [signed-by=/etc/apt/keyrings/josm-apt.gpg] https://josm.openstreetmap.de/apt jammy universe
     91deb [signed-by=/etc/apt/keyrings/josm-apt.gpg] https://josm.openstreetmap.de/apt focal universe
     92deb [signed-by=/etc/apt/keyrings/josm-apt.gpg] https://josm.openstreetmap.de/apt bionic universe
     93
    8294# For other Debian based distributions add:
    83 deb https://josm.openstreetmap.de/apt alldist universe
    84 }}}
    85 
    86 Alternatively, this can be done with the following one-liner in Ubuntu:
    87 {{{
    88 echo deb https://josm.openstreetmap.de/apt $(lsb_release -sc) universe | sudo tee /etc/apt/sources.list.d/josm.list > /dev/null
     95deb [signed-by=/etc/apt/keyrings/josm-apt.gpg] https://josm.openstreetmap.de/apt alldist universe
     96}}}
     97
     98Alternatively, this can be done with the following one-liner in Ubuntu (not for Ubuntu based distributions like Linux Mint):
     99{{{#!sh
     100echo "deb [signed-by=/etc/apt/keyrings/josm-apt.gpg] https://josm.openstreetmap.de/apt $(lsb_release -sc) universe" | sudo tee /etc/apt/sources.list.d/josm.list > /dev/null
     101}}}
     102or for Linux Mint:
     103{{{#!sh
     104echo "deb [signed-by=/etc/apt/keyrings/josm-apt.gpg] https://josm.openstreetmap.de/apt $(grep ^DISTRIB_CODENAME= /etc/upstream-release/lsb-release| awk -F = '{print $(2)}') universe" | sudo tee /etc/apt/sources.list.d/josm.list > /dev/null
    89105}}}
    90106
     
    92108### below did not work on all systems
    93109and add the following line:
    94 `deb https://josm.openstreetmap.de/apt VERSION universe`
    95 }}}
    96 
    97 Download and register the [[/josm-apt.key|public key]]:
    98 {{{#!sh
    99 wget -q https://josm.openstreetmap.de/josm-apt.key -O- | sudo apt-key add -
    100 }}}
    101 
    102 Now refresh your sources (you may need to install `sudo apt-get install apt-transport-https`)
    103 {{{#!sh
     110{{{#!sh
     111`deb [signed-by=/etc/apt/keyrings/josm-apt.gpg] https://josm.openstreetmap.de/apt VERSION universe`
     112}}}
     113}}}
     114
     115Download the [/josm-apt.key public key]:
     116{{{#!sh
     117sudo curl https://josm.openstreetmap.de/josm-apt.key -o /etc/apt/keyrings/josm-apt.gpg
     118}}}
     119
     120In the past, instructions used `apt-key`. If the key was added to system's keyring, following line will remove it. This is never required, except it stops JOSM from signing packages that are NOT josm.
     121{{{#!sh
     122sudo apt-key del $(apt-key list | grep -B1  "<josm-dev@openstreetmap.org>" | sed '$d' | cut -b 48-51,53-57)
     123}}}
     124
     125Now refresh your sources:
     126{{{#!sh
     127# You may need to install ssl support for apt in advance:
     128sudo apt-get install apt-transport-https
     129# Refresh sources
    104130sudo apt-get update
    105131}}}
     132
    106133and install:
    107 
    108134{{{#!sh
    109135# You can skip this first line if these packages were not installed before.
     
    112138# For the tested version
    113139sudo apt-get install josm
    114 # for the development version
     140# For the development version
    115141sudo apt-get install josm-latest
    116142}}}
     
    118144
    119145=== GNU Debian ===#GNUDebian
    120 The tested version of JOSM is available under **''main''** in section **''utils''**.
    121 
    122 Please, use the [https://backports.debian.org backports repository] to get the up to date version, see [https://backports.debian.org/Instructions Instructions].
     146Our own Ubuntu packages, [#Ubuntu above], work on Debian and we recommend to use them. Depending on the setup of `sudo`, some instruction will not work as "normal" user but only as `root`.
     147
     148The tested version of [https://packages.debian.org/stable/josm JOSM] is available under **''main''** in section **''utils''**, but the version is usually quite old. \\
     149Please, use the [https://backports.debian.org backports repository] to get a more up-to-date version, see [https://backports.debian.org/Instructions Instructions]. This version might still be older than our own packages.
     150
     151Since Debian 11 (bullseye) the [https://packages.debian.org/stable/josm-installer josm-installer] is available under **''main''** in section **''utils''**. It downloads the current .jar file from this site and updates it if necessary.
    123152
    124153=== openSUSE  ===#Opensuse
    125 [=#openSUSE]
    126 The tested version of JOSM is available in the Application:Geo repository.
    127 
    128 First add as root user in yast or with zypper the repository (replace the version in the URL with the one you are using):
    129 {{{
    130 zypper ar -f https://download.opensuse.org/repositories/Application:/Geo/openSUSE_Leap_15.0 Application:Geo
     154The tested version of JOSM is available in the Application:Geo repository.[=#openSUSE]
     155
     156First add as root user in yast or with zypper the repository (for Tumbleweed replace **$releasever** with **openSUSE_Tumbleweed**):
     157{{{#!sh
     158zypper ar -f 'https://download.opensuse.org/repositories/Application:/Geo/$releasever' Application:Geo
    131159}}}
    132160
    133161Then simply install ''josm'' and ''josm-fonts'' package.
    134162
     163=== Arch Linux ===#ArchLinux
     164
     165The official repository contains the `josm` [https://archlinux.org/packages/extra/any/josm/ package], which can be installed via `pacman -S josm`.
     166
     167The Arch user repository (AUR) additionally contains the `josm-latest` [https://aur.archlinux.org/packages/josm-latest package] with the latest version of JOSM.
     168Use your AUR helper to install this package.
     169
     170Both packages are third-party-packages and not maintained by the JOSM-team.
    135171
    136172== Troubleshooting ==
    137173=== Java ===#Java
    138 [=#Doubleclickonafiledoesnothing When you double-click on a jar file and nothing happens] in most cases this means Java isn't installed.
    139 
    140 JOSM is tested with Oracles variant, so we recommend to get Java from their pages for [https://www.java.com/download/manual.jsp manual] downloads or [http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html intermediate] versions. But first give the Java already distributed with the operating system a try, [https://en.wikipedia.org/wiki/OpenJDK for example].
     174When you double-click on a jar file and nothing happens in most cases this means Java isn't installed.
     175
     176JOSM now recommends [https://www.azul.com/downloads/?version=java-21-lts&package=jdk-fx#zulu Azul] or [https://bell-sw.com/pages/downloads/?package=jre-full#mn Bellsoft Liberica] JDK's. Generally speaking, the current Java LTS should be preferred (at time of writing, that would be Java 25), but Java 11 will work. See the [source:/trunk/README README] for current recommendations. But first give the Java already distributed with the operating system a try, [https://en.wikipedia.org/wiki/OpenJDK for example].
     177
    141178
    142179When choosing a download keep in mind:
     
    145182 * Avoid pages like www.java.com/en/download which intent to place Java Plug-ins in web browsers. And this is **not** important for JOSM.
    146183
    147 For further information visit the [InstallNotes Installation Notes] and [https://www.java.com/en/download/help/troubleshoot_java.xml troubleshooting] pages.
     184For further information visit the [wikitr:/InstallNotes Installation Notes] and [https://www.java.com/en/download/help/troubleshoot_java.xml troubleshooting] pages.
    148185''Java'' in this section means a JRE (Java Runtime Engine) which provides a JVM (Java Virtual Machine) to run JOSM, a Java program that is developed using JDK (Java Development Kit) and sometimes launched with the JNLP (Java Network Launch Protocol aka Web Start and successor of Java Plug-ins).
    149186
    150 ==== Testing Java ====#Javatest
     187==== Testing Java ====#JavaTest
    151188[=#Troubleshootingjarfile] Checks if Java is installed and why JOSM does not start (example mainly for MS Windows).
    1521891. Download [/josm-tested.jar josm-tested.jar] to your desktop.
     
    161198=== Web Start ===#Webstart
    162199[=#Troubleshootingjhlplink]
    163 Launching JOSM via Web Start has many more error causes than the traditional way with first downloading a jar file and afterwards starting it.
    164 So please test [#JavaTest Java] first and then run the tests described below or elsewhere [https://www.java.com/en/download/faq/java_webstart.xml Web Start issues].
     200You need to install [https://openwebstart.com/ OpenWebStart] first. It will download and run Java by itself. Please use the 64 bit (`x64`) version of OpenWebStart if you are on Microsoft Windows. The transition from Oracle WebStart to OpenWebStart is still in progress, so in case of issue please create a [/newticket new ticket] or post a comment to #17858.
     201
     202You may need to update the default application for opening JNLP files if you previously used Oracle WebStart. See [https://openwebstart.com/docs/OWSGuide.html#_jnlp_file_association jnlp file association] for instructions on setting OpenWebStart as the default program for jnlp files.
    165203
    166204==== Testing Web Start ====#Webstarttest
     
    172210
    173211=== Virtual Machine ===#Troubleshootingjvm
    174 
    175212==== Out of memory ====
    176 
    177 Nowadays manually controlling Javas memory is seldom needed because available RAM on computers has grown.
     213Nowadays manually controlling Java's memory is seldom needed because available RAM on computers has grown.
    178214Wrongly chosen values can decrease JOSM performance.
    179215
    180 For some tasks, JOSM has a large appetite for memory. On the one hand, it may be necessary to configure a memory size that supports more plugins and features. On the other hand can slow machines be stabilized by restricting Javas memory use.
    181 If needed, use the [wikitr:Help/CommandLineOptions command line] to set the [https://docs.oracle.com/javase/8/docs/technotes/tools/unix/java.html#BABHDABI Java Option] -Xmx…m, for example `-Xmx512m` or `-Xmx1536m`.
     216For some tasks, JOSM has a large appetite for memory. On the one hand, it may be necessary to configure a memory size that supports more plugins and features. On the other hand can slow machines be stabilized by restricting Java's memory use.
     217If needed, use the [wikitr:/Help/CommandLineOptions command line] to set the [https://docs.oracle.com/en/java/javase/11/tools/java.html#GUID-3B1CE181-CD30-4178-9602-230B800D4FAE__BABHDABI Java Option] -Xmx…m, for example `-Xmx512m` or `-Xmx1536m`. In Debian/Ubuntu you can edit the file `/etc/default/josm` respectively `/etc/default/josm-latest`. \\
    182218Formerly older java programs accepted `-Xmx=512m` or even `-Xmx 512m`. Now those malformed arguments throw error messages.
    183219
    184 
    185220==== VM selection ====#VMselectiononWindowsx64
    186 
    187221On current versions of MS Windows by default Java is installed mainly in the `C:\Program Files\Java\` directory. Additional parts are placed in `C:\Program Files\Oracle\Java\`. There is a `.\javapath\` directory as target for the PATH environment variable. It is the home for the three virtual files `java.exe`, `javaw.exe` and `javaws.exe`. This files are symbolic links form the current Java installations.
    188222
    189223On older versions of 64 bit Windows sometimes the 32 bit mode JRE was additionally installed.  Also some browsers brought their own JVM with limited capabilities. In those cases a Web Start from the browser would not use your Java installation but that from the browser.
    190224
    191 Check that there's no other javawebstart in {{{\Windows\SysWow64}}}. The Java control panel will not detect it and you can safely delete it. Perform cleanup and only keep the latest versions of each JRE (One or the 32-bit mode, another one for the 64-bit mode).
    192 
    193 For shortcuts created on the desktop for JNLP and running the Javawebstart launcher , make sure to pass VM parameters prefixed with -J and no intermediate space before the VM option. If you have installed both the 32-bit and 64-bit version, you should pass the option "{{{-d64}}}" if you want to select the preferred 64-bit VM. Note that some Oracle documentation pages indicate the option "-D64" with the incorrect capitalization!)
     225Check that there's no other javawebstart in `\Windows\SysWow64`. The Java control panel will not detect it and you can safely delete it. Perform cleanup and only keep the latest versions of each JRE (One or the 32-bit mode, another one for the 64-bit mode).
     226
     227For shortcuts created on the desktop for JNLP and running the Javawebstart launcher , make sure to pass VM parameters prefixed with -J and no intermediate space before the VM option. If you have installed both the 32-bit and 64-bit version, you should pass the option "`-d64`" if you want to select the preferred 64-bit VM. Note that some Oracle documentation pages indicate the option "-D64" with the incorrect capitalization!)
    194228
    195229Example of an edited command line for a shortcut on the windows desktop:
     
    199233}}}
    200234
    201 === Windows josm.exe ===#Mswindowswrapper
    202 
     235=== Microsoft Windows ===#MSWindows
     236==== josm.exe ====#Mswindowswrapper
    203237Using josm-setup.exe for installation on Microsoft Windows does the following:
    204  * Puts the files `josm-tested.jar` and `josm.exe` in directory chosen by the user, default is `C:\Program Files (86)\JOSM\`
    205  * Suggests to register josm.exe as target for the file extensions `*.osm` and `*.gpx`.
    206  * Suggests to place JOSM shortcut icons on the Desktop and in the Start Menu (Currently they are placed for an admin only and can be copied from there, #11398).
    207  * Asks if the Plug-Ins Imagery offset database and Turn restrictions should be provided.
     238 * Puts two executable files `JOSM.exe` and `HWConsole.exe` in directory `%LOCALAPPDATA%\JOSM`
     239 * Registers JOSM.exe as target for the file extensions `*.osm`, `*.geojson`, `*.gpx`, `*.jos` and `*.joz`.
     240 * Places JOSM shortcut icons on the Desktop and in the Start Menu.
    208241 * Adds uninstall data at the appropriate places.
    209242
    210 When starting, josm.exe searches its directory for the jar file and runs the command `\path\to\javaw.exe -Xms128m -Xmx1024m -jar \path\to\josm-tested.jar`.
    211 Josm.exe acts as a ''wrapper'' and is [wikitr:/USB_Stick portable].
    212 
    213 When josm.exe finds the argument `--l4j-debug`, it writes the log file `launch4j.log` into the current directory if that is writeable. Some other [http://launch4j.sourceforge.net/docs.html#Runtime_options options] are possible and all usual [wikitr:/Help/CommandLineOptions#Programarguments JOSM Program arguments] too. See example:
     243When starting, JOSM.exe starts JOSM with an embedded version of Java maintained by JOSM developers, based on Azul Zulu.
     244JOSM.exe acts as a ''wrapper'' and is [wikitr:/USB_Stick portable].
     245
     246HWConsole.exe is similar to JOSM.exe but start JOSM while keeping open a Windows console displaying JOSM standard output (logs).
     247
     248JOSM.exe accepts all usual [wikitr:/Help/CommandLineOptions#Programarguments JOSM Program arguments]. See example:
    214249
    215250{{{
    216251#!sh
    217 # Write a log while starting JOSM and load OSM data
    218 josm.exe --l4j-debug https://www.osm.org/way/476702262
    219 }}}
    220 
    221 For giving [wikitr:Help/CommandLineOptions#Javaoptions Java options] to the Java VM josm.exe uses the optional file `josm.l4j.ini` in its directory. In this file each option needs a separate line and comments are possible, see [http://launch4j.sourceforge.net/docs.html#Additional_jvm_options Additional JVM options].
    222 
    223 While being a 32-bit program, josm.exe needs a 64-bit Java on a 64-bit Windows.
    224 Currently josm.exe is [/browser/josm/trunk/windows/launch4j.xml configured] to search for java in the [https://sourceforge.net/p/launch4j/feature-requests/127/ registry only] and to
    225 prefer JRE's.
    226 
    227 === MacOS Errors ===#Macoserrors
    228 [=#MacOSErrors][=#MacOSXMountainLionErrors]
     252# Load OSM data
     253josm.exe https://www.osm.org/way/476702262
     254}}}
     255
     256For giving [wikitr:/Help/CommandLineOptions#Javaoptions Java options] to the Java VM, JOSM.exe uses the configuration file `JOSM.cfg` in its app sub-directory. In this file, each option must be on a separate line.
     257
     258For example, to change memory allocation, open `%LOCALAPPDATA%\JOSM\app\JOSM.cfg` and add `java-options=-Xmx8192m` (for 8 GB) to a new line under the `[JavaOptions]` header.
     259
     260==== Graphics ====#MicrosoftWindowsGraphics
     261Some Windows installations have graphics driver issues (see #23784 for an example). This may exhibit symptoms such as:
     262* Black bars in JOSM toolbars
     263* Flickering
     264* Other unexpected user interface issues
     265
     2661. Download and install Display Driver Uninstaller (DDU, [https://github.com/Wagnard/display-drivers-uninstaller source]) from the official mirror => https://www.wagnardsoft.com/display-driver-uninstaller-DDU-
     2672. From the "Device Type" drop-down on the right, select "GPU". DDU will automatically detect the GPU you're using.
     2683. Click on "Clean and Restart" at the top. This will uninstall the graphics drivers and restart your PC.
     2694. Reinstall the drivers.
     270
     271//**WARNING: Create a backup of your PC before using DDU. Although it creates a recovery point by itself, it's ideal to make one yourself just in case.**//
     272
     273=== macOS ===#macOS
     274[=#MacOSErrors][=#MacOSXMountainLionErrors][=#Macoserrors]
    229275{{{
    230276#!comment
     
    232278}}}
    233279
    234 Apple has two mechanisms to ''protect'' you from using JOSM: [https://support.apple.com//HT201940 File Quarantine] and [https://support.apple.com//HT202491 Gatekeeper].
    235 
    236 ==== Downloaded from the internet ====
    237 [[Image(josm_1st_run.png,width=320,align=right,float=left)]] If you get an error saying "'JOSM.app' is an application downloaded from the internet." you can bypass this by **right-clicking on JOSM.app** or josm.jnlp and selecting 'open'. You should then see the same message but this time with an option to "Open" regardless. This is only necessary on the first run of JOSM.
    238 
    239 ==== Damaged ====
    240 [[Image(#8787:damaged_josm_app.png,width=300,align=left,margin-top=-50,margin-right=30)]]
    241 
    242 If you get an error saying "'JOSM.app' is damaged and can't be opened. You should move it to the Trash", then you need to temporarily disable Gatekeeper.
    243 
    244 Open System Preferences and the 'Security & Privacy' options. Set 'Allow applications downloaded from:' to 'Anywhere'.
    245 
    246 [[Image(SecurityPrivacy.png,align=right,float=left,width=300)]]
    247 
    248 If that radio button is missing from the Security & Privacy preferences panel, open the Terminal window. The following command may become the radio button to appear.
    249 
    250 {{{
    251 sudo spctl --master-disable
    252 }}}
    253 
    254 
    255280==== Using brew ====#brew
    256 MacOS users may choose [https://brew.sh/ homebrew] package manager as a universal way to install and update their JOSM instance.
    257 
    258 Using `brew cask` eliminates most of the above-mentioned issues. (see. [https://caskroom.github.io/]).
    259 
    260 Open Terminal and run the next commands to install or upgrade JOSM to the current tested version, respectively:
    261 
    262 {{{
    263 brew cask install josm
    264 }}}
    265 {{{
    266 brew cask upgrade josm
    267 }}}
     281macOS users may use the [https://brew.sh/ homebrew] package manager to install and update their JOSM instance.
     282
     283In Terminal, run the `brew install --cask josm` to install or `brew upgrade --cask josm` to upgrade to the current tested version of JOSM.
     284
     285=== Linux ===#linux
     286==== Arch Linux ====
     287Using AUR you can install [https://aur.archlinux.org/packages/openwebstart-bin openwebstart-bin].
     288
     289If you use [https://archlinux.org/packages/extra/x86_64/icedtea-web/ icedtea-web] instead of the recommended openwebstart you will get an error with the newest java. java-17-openjdk is known to work, but java-22-openjdk do not.
     290
     291
    268292=== Known issues ===
    269 
    270 Not closed issues about ...:
    271 * [/query?status=!closed&type=defect&keywords=~java Java issues] - some of the bugs lead to blockers in Oracle JVM (covered at [[JavaBugs]]).
     293Not closed issues about …:
     294* [/query?status=!closed&type=defect&keywords=~java Java issues] - some of the bugs lead to blockers in Oracle JVM (covered at [wiki:JavaBugs JavaBugs]).
    272295* [/query?status=assigned&type=defect&status=needinfo&status=new&status=reopened&keywords=~linux&order=priority Linux]
    273296* [/query?status=assigned&type=defect&status=needinfo&status=new&status=reopened&keywords=~ubuntu&order=priority Ubuntu]
    274 * [/query?status=assigned&type=defect&status=needinfo&status=new&status=reopened&keywords=~macos&order=priority MacOS]
     297* [/query?status=assigned&type=defect&status=needinfo&status=new&status=reopened&keywords=~macos&order=priority macOS]
    275298* [/query?status=assigned&type=defect&status=needinfo&status=new&status=reopened&keywords=~windows&order=priority Windows]