How To Portable

an experimental way to make rssowl portable for any version is:

example for rssowl 2.2.1 (32bit)

• copy rssowl folder to like U:\rssowl\RSSOwl.exe

• download and install a jre you want to use (32bit rssowl needs 32bit jre) (2.2.1 needs jre between and including 5 to 8) (older jres are smaller?)
  after install copy the jre folder and rename it:
  like from c:\program files (x86)\java\jre8
  to like U:\rssowl\jre
  so that this exists: U:\rssowl\jre\bin\java.exe

• change data folder location in U:\rssowl\configuration\config.ini remove here all @user.home/
  like before
  [email protected]/.rssowl2
  [email protected]/.rssowl2/config221
  like after
  osgi.instance.area.default=.rssowl2
  osgi.configuration.area=.rssowl2/config221

• (optional, do if you want to copy existing settings and database) copy the data folder (contains settings and database)
  from (type in explorer) %userprofile%.rssowl2
  to like: U:\rssowl.rssowl2
  so that this path structure exists (the ones you changed the path to in the config.ini):
  U:\rssowl.rssowl2.metadata
  U:\rssowl.rssowl2\config221

• (optional, do if you use internal browser)
  add to RSSOwl.ini at the end: -Dportable
  that disables chaching of internal browser

• test.
  on another windows system (32 bit rssowl works also on 64 bit windows) without rssowl and without java installed try running U:\rssowl\RSSOwl.exe

notes:
if your database is big running it from a slow device like an usb stick will be obviously slower.