column - 2022-04-02

I got system with installed jamvm onboard. Output of jamvm -version command :

java version "1.5.0"
JamVM version 2.0.0
Copyright (C) 2003-2014 Robert Lougher <rob@jamvm.org.uk>

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2,
or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

Build information:

Execution Engine: direct-threaded interpreter with stack-caching
Compiled with: gcc 4.8.5

Boot Library Path: /usr/lib/classpath
Boot Class Path: /usr/share/jamvm/classes.zip:/usr/share/classpath/glibj.zip

I have downloaded from official site and installed jamvm on my Ubuntu.

java version "1.5.0"
JamVM version 1.5.4
Copyright (C) 2003-2010 Robert Lougher <rob@jamvm.org.uk>

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2,
or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

Build information:

Execution Engine: inline-threaded interpreter
Compiled with: gcc 9.3.0

Boot Library Path: /usr/local/classpath/lib/classpath
Boot Class Path: /usr/local/jamvm/share/jamvm/classes.zip:/usr/local/classpath/share/classpath/glibj.zip

Why my installed system has JamVM version 2.0.0 while Ubuntu JamVM version 1.5.4 ? Where to get JamVM version 2.0.0 ?