ImageJ Updater

Author: Wayne Rasband (wsr at
Installation: Download ImageJ_Updater_.class to the plugins folder, or subfolder, restart ImageJ, and there will be a new ImageJ Updater command in the Plugins menu, or submenu.
Description: This plugin upgrades ImageJ to the latest ij.jar at", or downgrades to earlier versions of ImageJ. Select "daily build" from the drop down menu and it will upgrade to the latest daily build at This plugin is built into ImageJ 1.50i and later as the Help>Update ImageJ command.
History: 2008/02/12: First version
2008/02/15: Adds menu for selecting version
2008/02/25: Renamed ImageJ_Updater_
2009/06/17: Works with ImageJ64 distributed with v1.42
2009/06/23: Fixed space in path bug introduced in previous version
2016/03/22: Downloads updates from"
to avoid problems due to the encryption of".
2016/07/07: Fixed a bug that could cause a NoSuchMethodError (closeAll).