continuosDownload plugin crashes at startup if all values are set to 0

[anonymous]

What steps will reproduce the problem?

1. Getting the continuosDownload plugin
2. Setting all the values in the plugin's settings page to zero
3. Restarting JOSM

What is the expected result?

JOSM loads normally.

What happens instead?

Josm crashes at startup, when loading the plugin.

Please provide any additional information below. Attach a screenshot if possible.

Revision:19396
Build-Date:2025-05-02 07:42:11

Identification: JOSM/1.5 (19396 pl) Windows 11 64-Bit
OS Build number: Windows 10 Home 24H2 (26100)
Memory Usage: 776 MB / 12192 MB (329 MB allocated, but free)
Java version: 21.0.7+6-LTS, Azul Systems, Inc., OpenJDK 64-Bit Server VM
Look and Feel: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
Screen: \Display0 1920x1080x32bpp@144Hz (scaling 1.00×1.00) \Display1 1920x1080x32bpp@60Hz (scaling 1.00×1.00)
Maximum Screen Size: 1920×1080
Best cursor sizes: 16×16→32×32, 32×32→32×32
System property file.encoding: UTF-8
System property sun.jnu.encoding: Cp1250
Locale info: pl_PL
Numbers with default locale: 1234567890 -> 1234567890
VM arguments: [-Djpackage.app-version=1.5.19396, -XX:MaxRAMPercentage=75.0, --add-modules=java.scripting,java.sql,javafx.controls,javafx.media,javafx.swing,javafx.web, --add-exports=java.base/sun.security.action=ALL-UNNAMED, --add-exports=java.desktop/com.sun.imageio.plugins.jpeg=ALL-UNNAMED, --add-exports=java.desktop/com.sun.imageio.spi=ALL-UNNAMED, --add-opens=java.base/java.lang=ALL-UNNAMED, --add-opens=java.base/java.nio=ALL-UNNAMED, --add-opens=java.base/jdk.internal.loader=ALL-UNNAMED, --add-opens=java.base/jdk.internal.ref=ALL-UNNAMED, --add-opens=java.desktop/javax.imageio.spi=ALL-UNNAMED, --add-opens=java.desktop/javax.swing.text.html=ALL-UNNAMED, --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED, -Djpackage.app-path=%UserProfile%\AppData\Local\JOSM\JOSM (Debug).exe]

Plugins:
+ FastDraw (36438)
+ ImproveWay (7c496c4)
+ MakeParallel (v1.1.0)
+ PicLayer
+ RoadSigns (36438)
+ auto_tools (6c6bb6f)
+ buildings_tools
+ continuosDownload
+ easypresets
+ flatlaf (36438)
+ gridify
+ jaxb (36438)
+ measurement (36438)
+ merge-overlap
+ plbuildings
+ pt_assistant
+ public_transport (36438)
+ reverter (36447)
+ sidewalks (71)
+ splinex (36438)
+ terracer
+ turnlanes (36438)
+ undelete
+ utilsplugin2 (36438)

Tagging presets:
+ <josm.pref>/EasyPresets.xml
+ https://josm.openstreetmap.de/josmfile?page=Presets/OSMRookie&zip=1
+ %UserProfile%\Documents\test

Map paint styles:
- https://josm.openstreetmap.de/josmfile?page=Styles/iD&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/HighwayAreas&zip=1
- https://raw.githubusercontent.com/yopaseopor/indoormap/master/indoormap-style.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/Admin_Boundaries&zip=1
- https://raw.githubusercontent.com/species/josm-preset-traffic_sign_direction/master/direction.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/Direction&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Enhanced_Lane_and_Road_Attributes&zip=1
- https://github.com/GlassOceanos/indoor-JOSM-style/archive/master.zip
+ https://josm.openstreetmap.de/josmfile?page=Styles/Lane_and_Road_Attributes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Greenery&zip=1
- https://raw.githubusercontent.com/yopaseopor/traffic_signs_style_JOSM/master/Styles_Traffic_signs_EUR_OR.zip
- https://josm.openstreetmap.de/josmfile?page=Styles/PublicTransport&zip=1

Last errors/warnings:
- 00000.422 W: extended font config - overriding 'filename.Malgun_Gothic=malgun.ttf' with 'MALGUN.TTF'
- 00000.424 W: extended font config - overriding 'filename.Myanmar_Text=mmrtext.ttf' with 'MMRTEXT.TTF'
- 00000.424 W: extended font config - overriding 'filename.Mongolian_Baiti=monbaiti.ttf' with 'MONBAITI.TTF'
- 00000.982 E: java.security.KeyStoreException: Windows-ROOT not found. Przyczyna: java.security.NoSuchAlgorithmException: Windows-ROOT KeyStore not available
- 00007.190 W: Cannot lock cache directory. Will not use disk cache
- 00008.363 E: Handled by bug report queue: java.lang.ExceptionInInitializerError. Przyczyna: java.lang.IllegalArgumentException

OSM API: https://opengeofiction.net/api


=== REPORTED CRASH DATA ===
BugReportExceptionHandler#handleException:
No data collected.

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: main (1)
java.lang.ExceptionInInitializerError
	at java.base/java.lang.Class.forName0(Native Method)
	at java.base/java.lang.Class.forName(Unknown Source)
	at java.base/java.lang.Class.forName(Unknown Source)
	at org.openstreetmap.josm.plugins.PluginInformation.loadClass(PluginInformation.java:402)
	at org.openstreetmap.josm.plugins.PluginHandler.loadPlugin(PluginHandler.java:864)
	at org.openstreetmap.josm.plugins.PluginHandler.loadPlugins(PluginHandler.java:927)
	at org.openstreetmap.josm.plugins.PluginHandler.loadLatePlugins(PluginHandler.java:1029)
	at org.openstreetmap.josm.gui.MainApplication.loadLatePlugins(MainApplication.java:1251)
	at org.openstreetmap.josm.gui.MainApplication.mainJOSM(MainApplication.java:1007)
	at org.openstreetmap.josm.gui.MainApplication$3.processArguments(MainApplication.java:280)
	at org.openstreetmap.josm.gui.MainApplication.main(MainApplication.java:766)
Caused by: java.lang.IllegalArgumentException
	at java.base/java.util.concurrent.ThreadPoolExecutor.<init>(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.<init>(Unknown Source)
	at org.openstreetmap.josm.plugins.continuosDownload.DownloadPlugin.<clinit>(DownloadPlugin.java:66)
	... 11 more