🚀 go-pugleaf

i download RabtPad from http://rabtpad.sourceforge.net/
RabtPad is a (will be) unicode and Java based styled text editor for arabic
and latin scripts with following features
for run must :
        Java VM (1.4) must be installed
        (1) make a direcotry for installation like C:\rabt and copy the
following 2 files there
        (2) Download the RabtPad application as Java Archiv Repository (jar)
from here
        (3) Download the RabtPad Input Method as Java Archiv Repository
(jar) from here
        (4) change working direcotry in shell to C:\rabt
        (5) start application with this command in a shell or dos window
        java -Djava.ext.dirs=. -jar RabtPad.jar
but i see following error

java.lang.NoSuchMethodError: javax.swing.JToolBar.setRollover(Z)V
 at RabtPad.initComponents(RabtPad.java:383)
 at RabtPad.<init>(RabtPad.java:233)
 at RabtPad.main(RabtPad.java:2150)

why ?