I am using Tumbleweed 20170712 with KDE-Plasma 5.10.3. Even bsh2 will open Chrome instead of Firefox default browser:

Code:
karl@hofkirchen:~> bsh2
BeanShell 2.0.0.b6 - by Pat Niemeyer (pat@pat.net)
bsh % Desktop.getDesktop().browse(new URI("http://jalbum.net"));
^C^Ckarl@hofkirchen:~>
Any idea how to change this and have bsh2 open the default browser?